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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001047469-04-025599.txt : 20040806
<SEC-HEADER>0001047469-04-025599.hdr.sgml : 20040806
<ACCEPTANCE-DATETIME>20040806120630
ACCESSION NUMBER:		0001047469-04-025599
CONFORMED SUBMISSION TYPE:	S-3/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20040806

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTRUSION INC
		CENTRAL INDEX KEY:			0000736012
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				751911917
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-114639
		FILM NUMBER:		04956879

	BUSINESS ADDRESS:	
		STREET 1:		1101 ARAPAHO ROAD
		CITY:			RICHARDSON
		STATE:			TX
		ZIP:			75081
		BUSINESS PHONE:		9722346400

	MAIL ADDRESS:	
		STREET 1:		1101 ARAPAHO ROAD
		CITY:			RICHARDSON
		STATE:			TX
		ZIP:			75081

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTRUSION COM INC
		DATE OF NAME CHANGE:	20000601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ODS NETWORKS INC
		DATE OF NAME CHANGE:	19970507

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OPTICAL DATA SYSTEMS INC
		DATE OF NAME CHANGE:	19950517
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3/A
<SEQUENCE>1
<FILENAME>a2141465zs-3a.htm
<DESCRIPTION>S-3/A
<TEXT>
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<FONT SIZE=3 ><A HREF="#04DFW1483_1">QuickLinks</A></FONT>
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<FONT SIZE=2><B>As Filed with the Securities and Exchange Commission on August 6, 2004

  </B></FONT>

</P>

<P ALIGN="RIGHT"><FONT SIZE=2><B> Registration No.&nbsp;333-114639  </B></FONT></P>


<P><FONT SIZE=2><B> <hr noshade width=100% align=left size=4>
<hr noshade width=100% align=left size=1>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=5><B>SECURITIES AND EXCHANGE COMMISSION<BR>  </B></FONT><FONT SIZE=2><B>COMMISSION Washington, D.C. 20549  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER">


<FONT SIZE=5><B>Amendment No.&nbsp;3<BR>
to<BR>
Form&nbsp;S-3

 </B></FONT>

</P>

<P ALIGN="CENTER"><FONT SIZE=2><B>REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=5><B>Intrusion Inc.<BR>  </B></FONT><FONT SIZE=2>(Name of Issuer in Its Charter) </FONT></P>

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<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>DELAWARE</B></FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>3576</B></FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>75-1911917</B></FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2>(State or other jurisdiction of<BR>
incorporation or organization)</FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2>(Primary Standard Industrial<BR>
Classification Code Number)</FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2>(I.R.S. Employer Identification Number)</FONT></TD>
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<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=2><B>MICHAEL PAXTON<BR>
Vice President and Chief Financial Officer<BR>
Intrusion&nbsp;Inc.<BR>
1101 E. Arapaho Road<BR>
Richardson, Texas 75081<BR>
Telephone: (972)&nbsp;234-6400<BR>
Facsimile: (972)&nbsp;301-3892<BR>
Address and telephone number of principal executive offices,<BR>
principal place of business and agent for service  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=2><I>copies to:</I></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>THOMAS R. NELSON<BR>
AKASH D. SETHI<BR>
Patton Boggs LLP<BR>
2001 Ross Avenue, Suite&nbsp;3000<BR>
Dallas, Texas 75201<BR>
Telephone: (214) 758-1500<BR>
Facsimile: (214) 758-1550  </B></FONT></P>

<P><FONT SIZE=2><B> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Approximate Date of Commencement of Proposed Sale to the Public:</B></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;As soon as practicable after the Registration Statement becomes
effective. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plans, please check the following
box.&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule&nbsp;415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box:&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#253;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this form is filed to register additional securities for an offering pursuant to Rule&nbsp;462(b)&nbsp;under the Securities Act, check the following box
and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this form is a post-effective amendment filed pursuant to Rule&nbsp;462(c)&nbsp;under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective registration statement for the same offering.&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If delivery of the Registration Statement is expected to be made pursuant to Rule&nbsp;434, check the following
box.&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the
registrant shall file&nbsp;a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section&nbsp;8(a)&nbsp;of the
Securities Act of 1933 or until the registration statement shall become effective on such date as the Commission, acting pursuant to said Section&nbsp;8(a), may determine.</B></FONT></P>

<P><FONT SIZE=2><hr
noshade width=100% align=left size=1>
<hr noshade width=100% align=left size=4> </FONT></P>

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<!-- ZEQ.=1,SEQ=1,EFW="2141465",CP="INTRUSION INC",DN="1",CHK=713627,FOLIO='blank',FILE='DISK015:[04DFW3.04DFW1483]BA1483A.;7',USER='JBAKER',CD=';4-AUG-2004;16:37' -->
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<P><FONT COLOR="#FF4040" SIZE=2><B>The information in this preliminary prospectus is not complete and may be changed. These securities may not be sold until the registration statement
filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the
offer or sale is not permitted </B></FONT></P>

<P ALIGN="CENTER">


<FONT COLOR="#FF4040" SIZE=2><B>SUBJECT TO COMPLETION, DATED AUGUST 6, 2004</B></FONT>

</P>

<P><FONT SIZE=2><B> PRELIMINARY PROSPECTUS  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B>2,673,697 SHARES  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B> Intrusion&nbsp;Inc.<BR>
Common Stock  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus relates to up to 2,673,697 shares of our common stock that the selling stockholders named on page&nbsp;21 in this prospectus, or
their respective pledgees, donees, transferees or other
successors in interest that receive these shares as a gift, partnership distribution or other non sale related transfer, may offer for resale from time to time. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Of
the 2,673,697 shares of common stock to which this prospectus relates: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>462,338
shares are currently outstanding;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>1,590,331
shares underlie currently outstanding convertible preferred stock; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>621,028
shares underlie currently outstanding warrants. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
prices at which these stockholders may sell the shares will be determined by the prevailing market prices for the shares or in negotiated transactions. We will not receive any of the
proceeds from the sale of the shares, but we will receive the exercise price of the warrants if they are exercised for cash. If all of the warrants for which we are registering the underlying shares
of our common stock are exercised for cash, as of the date of this prospectus, we would receive an aggregate of approximately $1,952,512.03. </FONT></P>

<P><FONT SIZE=2>


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our common stock is currently quoted on The Nasdaq SmallCap Market under the symbol "INTZ." On August&nbsp;3, 2004, the closing price for our common stock as reported by The Nasdaq
SmallCap Market was $1.18. All share numbers and related price information contained in this prospectus reflect the effect of a four-for-one (4:1) reverse stock split of our common stock on
March&nbsp;29, 2004.

 </FONT></P>

<P>


<FONT SIZE=2><B><I>An investment in our common stock involves substantial risk. These risks are described under the caption "Risk Factors" beginning on page&nbsp;4 and the section entitled
"Additional Factors That May Affect Future Results of Operations" in the documents we file with the Securities and Exchange Commission that are incorporated by reference in this prospectus.

  </I></B></FONT>

</P>

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<P><FONT SIZE=2><B>Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this
prospectus is truthful or complete. Any representation to the contrary is a criminal offense.</B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>The
date of this prospectus is&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2004. </FONT></P>

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<BR></FONT><FONT SIZE=2><B>TABLE OF CONTENTS    <BR>    </B></FONT></P>




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<TD WIDTH="94%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
INTRUSION INC.</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
1</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
RISK FACTORS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
4</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
NOTE REGARDING FORWARD-LOOKING STATEMENTS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
12</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
DESCRIPTION OF SECURITIES AND RELATED TRANSACTIONS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
13</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
PLAN OF DISTRIBUTION</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
17</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
USE OF PROCEEDS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
19</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
SELLING STOCKHOLDERS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
20</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
LEGAL MATTERS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
22</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
EXPERTS</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
22</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="94%"><FONT SIZE=2><BR>
WHERE YOU CAN FIND ADDITIONAL INFORMATION</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%" ALIGN="RIGHT"><FONT SIZE=2><BR>
22</FONT></TD>
</TR>
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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bg1483_intrusion_inc."> </A>
<A NAME="toc_bg1483_2"> </A>
<BR></FONT><FONT SIZE=2><B>INTRUSION INC.    <BR>    </B></FONT></P>

<P><FONT SIZE=2><B>General  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We develop, market and support a family of network intrusion prevention and detection systems and regulated information compliance systems that address vital
security issues facing organizations with mission critical business applications or housing classified, confidential, or customer information assets. We currently provide network security and
regulated information compliance solutions under our SecureNet family of hardware and software solutions. </FONT></P>

<P><FONT SIZE=2>


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We market and distribute our products through a direct sales force to end-users and distributors and by numerous domestic and international system integrators, managed
service providers and value-added resellers. Our end-user customers include high technology, manufacturing, telecommunications, retail, transportation, health care, insurance,
entertainment, utilities and energy companies, government agencies, financial institutions, and academic institutions.


</FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
were organized in Texas in September&nbsp;1983 and reincorporated in Delaware in October&nbsp;1995. For more than 15&nbsp;years, we provided local area networking equipment and
were known as Optical Data Systems or ODS Networks. On April&nbsp;17, 2000, we announced plans to sell, or otherwise dispose of, our networking divisions, which included our Essential Communications
division and our local area networking assets. In accordance with these plans, we have accounted for these businesses as discontinued operations. On June&nbsp;1, 2000, we changed our name from ODS
Networks,&nbsp;Inc. to Intrusion.com,&nbsp;Inc., and our NASDAQ ticker symbol from ODSI to INTZ to reflect our focus on intrusion detection solutions. On November&nbsp;1, 2001, we changed our
name from Intrusion.com,&nbsp;Inc. to Intrusion&nbsp;Inc. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
principal executive offices are located at 1101 East Arapaho Road, Richardson, Texas 75081, and our telephone number is (972)&nbsp;234-6400. Our website URL is </FONT> <FONT SIZE=2><I>www.intrusion.com</I></FONT><FONT SIZE=2>. Information contained
in or linked to our website are not a part of this prospectus. References to "we," "us" and "our" in this
prospectus refer to Intrusion&nbsp;Inc. and its subsidiaries. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>2</FONT></P>

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<A NAME="page_bg1483_1_3"> </A>

<P><FONT SIZE=2><B>This Prospectus  </B></FONT></P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus relates to up to 2,673,697 shares of our common stock that the selling stockholders listed on page&nbsp;21, or their respective pledgees,
donees, transferees or other successors in interest that receive these shares as a gift, partnership distribution or other non-sale related transfer, may offer for resale from time to
time. These shares include shares of our common stock that are currently outstanding and shares of our common stock underlying shares of our convertible preferred stock and warrants that were issued
to the selling stockholders in various transactions. These transactions are summarized below and are more fully described under the section entitled "Description of Securities and Related
Transactions" beginning on page&nbsp;13 of this prospectus.

</FONT>

</P>

<P><FONT SIZE=2><B>The Transactions  </B></FONT></P>

<P><FONT SIZE=2><I>Private Placement  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On March&nbsp;25, 2004, we entered into a Securities Purchase Agreement with various investors pursuant to which the investors purchased 1,000,000 shares of our
5% convertible preferred stock and warrants to purchase up to 556,619 shares of our common stock. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
agreement with these investors requires us to register an aggregate of 2,146,950 shares of our common stock underlying the shares of preferred stock and the warrants. These shares
cover the number of shares of our common stock issuable by us upon conversion of the preferred stock and upon the exercise of the warrants. This prospectus includes all of these shares as well as
462,338 shares of outstanding common stock we agreed to include on behalf of current stockholders. </FONT></P>

<P><FONT SIZE=2><I>Compensation of Placement Agent  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Black Point Partners,&nbsp;Inc. acted as our placement agent in connection with both the private placement. As part of its compensation, we issued Black Point
Partners a warrant to purchase an aggregate of the 64,409 shares of our common stock. This prospectus includes all of these shares. </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2>3</FONT></P>

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<A NAME="toc_da1483_1"> </A>
<BR></FONT><FONT SIZE=2><B>RISK FACTORS    <BR>    </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><I>You should carefully consider the risks below and those contained in the section entitled "Factors That May Affect Future Results of
Operations" in the documents we file with the SEC that are incorporated by reference in this prospectus, specifically the factors included in our Form&nbsp;10-K for the year ended
December&nbsp;31, 2003, and our Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31, 2004, before making an investment decision. The risks described below and
incorporated herein are those we currently believe may materially affect us.</I></FONT></P>

<P><FONT SIZE=2><B><I>If we fail to respond to rapid technological changes in the network security industry, we may lose customers or our products may become obsolete.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The network security industry is characterized by frequent product introductions, rapidly changing technology and continued evolution of new industry standards.
We must also introduce upgrades to our products rapidly in response to customer needs such as new computer viruses or other novel external attacks on computer networks. In addition, the nature of the
network security industry requires our products to be compatible and interoperable with numerous security products, networking products, workstation and personal computer architectures and computer
and network operating systems offered by various vendors, including our competitors. As a result, our success depends upon our ability to develop and introduce in a timely manner new products and
enhancements to our existing products that meet changing customer requirements and evolving industry standards. The development of technologically advanced network security products is a complex and
uncertain process requiring high levels of innovation, rapid response and accurate anticipation of technological and market trends. We cannot assure you that we will be able to identify, develop,
manufacture, market or support new or enhanced products successfully in a timely manner. Further, we or our competitors may introduce new products or product enhancements that shorten the life cycle
of our existing products or cause our existing products to become obsolete. </FONT></P>

<P><FONT SIZE=2><B><I>Our revenues have declined from $16.7&nbsp;million in 2001 to $6.5&nbsp;million in 2003 in connection with a shift to sales of our newer product
lines. If our network intrusion detection and regulated information compliance system products do not achieve market acceptance, our revenues will suffer.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Over the past three years, we have transitioned our sales strategy from our lower margin SecureCom and PDS security appliance products to the development and
sales of our higher margin SecureNet network intrusion detection products. During this transition, sales of our new products were not enough to counteract the loss in sales associated with our older
products. As a result, our net revenues have declined from approximately $16.7&nbsp;million in 2001, to approximately $7.8&nbsp;million in 2002 and approximately $6.5&nbsp;million in 2003. In
addition, our revenues for the first quarter of 2004 are $1.3&nbsp;million as compared to $1.5&nbsp;million for the same period in 2003. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
new network security products and regulated information compliance systems have only been in the market place for a limited period of time and may have longer sales cycles than our
previous products. Although response to our products has been positive, we have not yet received broad market acceptance. We cannot assure you that our present or future products will achieve market
acceptance on a sustained basis. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
order to achieve market acceptance and achieve future revenue growth, we must introduce complementary security products, incorporate new technologies into our existing product lines
and design, develop and successfully commercialize higher performance products in a timely manner. We cannot assure you that we will be able to offer new or complementary products that gain market
acceptance quickly enough to avoid decreased revenues during current or future product introductions or transitions. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>4</FONT></P>

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<P><FONT SIZE=2><B><I>We resemble a developmental stage company and our business strategy may not be successful.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;From our founding in 1983 until 2000, we derived substantially all of our revenue from the design, manufacture and sale of local area networking equipment. In
order to permit us to focus our resources solely on developing and marketing our network security products, on April&nbsp;17, 2000, we announced our plans to sell our local area networking assets
and related networking divisions. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
a result of these sales, we now depend exclusively on revenues generated from the sale of our networks security products which have received limited market acceptance. Moreover, we
have only recently introduced our regulated information compliance systems, and the market for these products
has only begun to emerge. Consequently, we resemble a developmental stage company and will face the following inherent risks and uncertainties: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
need for our network security products and regulated information compliance systems to achieve market acceptance and produce a sustainable revenue stream;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
ability to manage costs and expenses;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
dependence on key personnel;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
ability to obtain financing on acceptable terms; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
ability to offer greater value than our competitors. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
business strategy may not successfully address these risks. If we fail to recognize significant revenues from the sales of our network security products and regulated information
compliance systems, our business, financial condition and operating results would be materially adversely affected. </FONT></P>

<P><FONT SIZE=2><B><I>We had a net loss of $1.3&nbsp;million and an accumulated deficit of $45.5&nbsp;million as of the quarter ending March&nbsp;31, 2004. As a result,
we must generate substantially greater revenues from sales in order to achieve profitability.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We have incurred significant operating losses and are uncertain about our future operating results. For the quarter ended March&nbsp;31, 2004, we incurred a net
loss of $1.3&nbsp;million and had an accumulated deficit of approximately $45.5&nbsp;million at March&nbsp;31, 2004. In addition, our revenues have declined from $16.7&nbsp;million in 2001, to
$7.8&nbsp;million in 2002, and $6.5&nbsp;million in 2003. We need to generate and sustain substantially greater revenues from the sales of our products if we are to achieve profitability. If we
are unable to achieve these greater revenues, our losses will continue indefinitely, and we may never achieve or sustain profitability or generate positive cash flow. </FONT></P>

<P><FONT SIZE=2><B><I>We face intense competition from both start-up and established companies that may have significant advantages over us and our products.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The market for network security solutions is intensely competitive. There are numerous companies competing with us in various segments of the data security
markets, and their products may have advantages over our products in areas such as conformity to existing and emerging industry standards, interoperability with networking and other security products,
management and security capabilities, performance, price, ease of use, scalability, reliability, flexibility, product features and technical support. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
principle competitors in the network intrusion and detection market include Internet Security Systems,&nbsp;Inc., Cisco Systems,&nbsp;Inc., Symantec,&nbsp;Inc., Netscreen
Technologies,&nbsp;Inc., Tipping Point Technologies&nbsp;Inc. and NFR Security,&nbsp;Inc. The market for regulated information compliance systems is relatively new. Our competitors in this
market include a number of start up companies that have entered the market in the last two years. However, as this market develops, we expect increased </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>5</FONT></P>

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<P><FONT SIZE=2>competition
from both start up and established companies. Our current and potential competitors may have one or more of the following significant advantages over us: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>greater
financial, technical and marketing resources;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>better
name recognition;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>more
comprehensive security solutions;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>better
or more extensive cooperative relationships; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>larger
customer base. </FONT></DD></DL>
</UL>
<BR>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Although
we believe that our focus on network perimeters with market leading VPN/firewall control technology and network intrusion detection visibility technology that reduce the total
cost of ownership provides us with an advantage with large organizations with complex security requirements, we cannot assure you that our products will achieve market acceptance or that we will be
able to compete successfully with our existing or new competitors. </FONT></P>

<P><FONT SIZE=2><B><I>Military actions may disrupt our business by reducing spending our products, increasing our costs and affecting our international operations.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;United States military actions or other events occurring in response to or in connection with them, including future terrorist attacks, actual conflicts involving
the United States or its allies or military or trade disruptions could impact our operations by: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>reducing
or delaying government or corporate spending on network security products;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>increasing
the cost and difficulty in obtaining materials or shipping products; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>affecting
our ability to conduct business internationally. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Should
these events occur, our business, operating results and financial condition could be materially and adversely affected. </FONT></P>

<P><FONT SIZE=2><B><I>Our products can have long sales and implementation cycles which may result in us incurring substantial expenses before realizing any associated
revenues.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The sale and implementation of our products to large companies and government agencies typically involves a lengthy education process and a significant technical
evaluation and commitment of capital and other resources. This process is also subject to the risk of delays associated with customers' internal budgeting and other procedures for approving capital
expenditures, deploying new technologies within their networks and testing and accepting new technologies that affect key operations. As a result, sales and implementation cycles for our products can
be lengthy, and we may expend significant time and
resources before we receive any revenues from a customer or potential customer. Our quarterly and annual operating results could be materially harmed if orders forecasted for a specific customer for a
particular period are not realized. </FONT></P>

<P><FONT SIZE=2><B><I>Our cash, cash equivalents, and investments declined from $10.7&nbsp;million to $2.7&nbsp;million during 2003. As a result of our expected
continuing net cash outflows, we may not have sufficient cash to operate our business.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As of December&nbsp;31, 2003, we had cash, cash equivalents and investments in the amount of approximately $2.7&nbsp;million, down from approximately
$10.7&nbsp;million as of December&nbsp;31, 2002. Although we believe the additional $5.0&nbsp;million in gross proceeds we received in connection with a private placement of preferred stock and
warrants we completed on March&nbsp;25, 2004 will provide us with sufficient cash resources to finance our operations for the next twelve months, the sufficiency of our cash resources may depend to
a certain extent on general economic, financial, competitive or other </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>6</FONT></P>

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<P><FONT SIZE=2>factors
beyond our control. Moreover, despite our actions to reduce costs and improve profitability, we expect our net operating losses and net operating cash outflows to continue through at least the
first half of 2004. We do not currently have any further arrangements for financing, and we may not be able to secure additional debt or equity financing on terms that are acceptable to us, or at all,
at the time when we need this financing. If our business does not generate sufficient cash flow from operations and sufficient financing resources are not available, we may not be able to operate or
grow our business, pay our expenses when due or fund our other liquidity needs. </FONT></P>

<P><FONT SIZE=2><B><I>Our failure to realize the expected benefits of our recent restructuring efforts could adversely affect our operating results.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;During the first quarter of 2004, we continued a restructuring plan and cost reduction efforts which resulted in $0.1&nbsp;million in severance costs. Since we
began restructuring in 2002, we have incurred approximately $0.8&nbsp;million in restructuring charges, severance, and related expenses. The objective of our restructuring plan was to reduce our
cost structure to a sustainable level that is consistent with our current cash resources and the general economic climate. We have also implemented other strategic initiatives to strengthen our
operations, such as reductions in our work force and facilities and aligning our organization around our business objectives. Any further work force reductions could result in temporary reduced
productivity of our remaining employees. Additionally, our customers and prospects may delay or forgo purchasing our products due to a perceived uncertainty caused by our restructuring and other
changes. Failure to achieve the desired results of our initiatives could seriously harm our business, results of operations and financial condition. </FONT></P>

<P><FONT SIZE=2><B><I>Consolidation in the network security industry may limit market acceptance of our products.  </I></B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Several of our competitors have acquired security companies with complementary technologies in the past, and we expect consolidation in the network security
industry to continue in the future. These acquisitions may permit our competitors to accelerate the development and commercialization of broader product lines and more comprehensive solutions than we
currently offer. Acquisitions of vendors or other companies with which we have a strategic relationship by our competitors may limit our access to commercially significant technologies. Further,
business combinations in the network security industry are creating companies with larger market share, customer bases, sales forces, product offerings and technology and marketing expertise which may
make it more difficult for us to compete. </FONT></P>

<P><FONT SIZE=2><B><I>Sales to government agencies accounted for 34.5% of our revenues the quarter ended March&nbsp;31, 2004 and 17% of our revenues for the year ended
December&nbsp;31, 2003. Sales to government customers involve unique risks which could adversely impact our revenues.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We derived 34.5% of our revenues from sales to various U.S. government entities for the quarter ended March&nbsp;31, 2004, and 17.0% of our revenues from these
sales for the year ended December&nbsp;31, 2003. We expect to continue to derive a substantial portion of our revenues from U.S. government customers in the future. Sales to the government present
risks in addition to those involved in sales to commercial customers, including potential disruption due to appropriation and spending patterns and he government's right to cancel contracts and
purchase orders for its convenience. General political and economic conditions, which we cannot accurately predict, directly and indirectly may affect the quantity and allocation of expenditures by
federal departments. In addition, obtaining government contracts may involve long purchase and payment cycles, competitive bidding, qualification requirements, delays or changes in funding, budgetary
constraints, political agendas, extensive specification development and price negotiations and milestone requirements. Each government entity also maintains its own rules&nbsp;and regulations with
which we must comply and which can vary significantly among departments. As a result, cutbacks or re-allocations in the federal budget or losses of government sales due to other factors
could have a material adverse effect on our revenues and operating results. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>7</FONT></P>

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<P><FONT SIZE=2><B><I>We derived 32.5% of our revenues from international sales in the quarter ended March&nbsp;31, 2004, and 31.4% of our revenues from these sales for the
year ended December&nbsp;31, 2003. Our ability to sell our products internationally are subject to certain risks which could harm our business.  </I></B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sales to foreign customers accounted for approximately 31.4% of our revenues for the year ended December&nbsp;31, 2003, and 32.5% of our revenues for the
quarter ended March&nbsp;31, 2004. We expect sales
to foreign customers to continue to represent a significant portion of our revenues in the future. Our international operations are subject to many inherent risks that may adversely affect our
business, financial condition and operating results, including: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>political,
social and economic instability;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>trade
restrictions;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>increases
in duty rates and other potentially adverse tax consequences;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>exposure
to different legal standards, particularly with respect to the protection of intellectual property;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>burdens
of complying with a variety of foreign laws;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>unexpected
changes in regulatory requirements;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>import
and export license requirements and restrictions of the United States and each other country where we operate;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>fluctuations
in currency exchange rates; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>changes
in local purchasing practices, including seasonal fluctuations in demand. </FONT></DD></DL>
</UL>
<BR>

<P><FONT SIZE=2><B><I>Sales through indirect channels accounted for 38% of our revenues for the quarter ended March&nbsp;31, 2004 and 57% of our revenue for the year ended
December&nbsp;31, 2003. Our revenues will suffer if we do not expand our sales through, or receive the anticipated benefits from our sales through, indirect sales channels.  </I></B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We derived 38% of our revenues for the quarter ended March&nbsp;31, 2004, and 57% of our revenue for the year ended December&nbsp;31, 2003 from sales through
indirect sales channels, such as distributors, value added resellers, system integrators, original equipment manufacturers and managed service providers. We believe we must expand our sales through
these indirect channels in order to increase our revenues. Although we are actively pursuing a strategy to increase the percentage of our revenues generated through these indirect sales channels, we
cannot assure you that our products will gain market acceptance in these indirect sales channels or that sales through these indirect sales channels will increase our revenues as expected. Further,
many of our competitors are also trying to sell their products through these indirect sales channels which could result in lower prices and reduced profit margins for sales of our products. </FONT></P>

<P><FONT SIZE=2><B><I>We must adequately protect our intellectual property in order to prevent loss of valuable proprietary information.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We rely on a combination of patent, copyright, trademark and trade secret laws, confidentiality procedures and non-disclosure agreements to protect
our proprietary technology. However, unauthorized parties may attempt to copy or reverse engineer aspects of our products or to obtain and use information that we regard as proprietary. Policing
unauthorized use of our products is difficult, and we cannot be certain that the steps we have taken will prevent misappropriation of our intellectual property. This is particularly true in foreign
countries where the laws may not protect proprietary rights to the same extent as the laws of the United States and may not provide us with an effective remedy against unauthorized use. If our
protection of our intellectual property proves to be inadequate or </FONT></P>

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<P><FONT SIZE=2>unenforceable,
others may be able to use our proprietary developments without compensation to us, resulting in potential cost advantages to our competitors. </FONT></P>

<P><FONT SIZE=2><B><I>We may incur substantial expenses defending ourselves against claims of infringement.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There are numerous patents held by many companies relating to the design and manufacture of network security systems. Although we are not aware of any instances
in which our products violate the intellectual property rights of others or inappropriately use their technology, it is possible that third
parties in the future may claim that our products infringe on their intellectual property rights. Any claim, with or without merit, could consume our management's time, result in costly litigation,
cause delays in sales or implementations of our products or require us to enter into royalty or licensing agreements. Royalty and licensing agreements, if required and available, may be on terms
unacceptable to us or detrimental to our business. Moreover, a successful claim of product infringement against us or our failure or inability to license the infringed or similar technology on
commercially reasonable terms could seriously harm our business. </FONT></P>

<P><FONT SIZE=2><B><I>Fluctuations in our quarterly revenues may cause the price of our common stock to decline.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our operating results have varied significantly from quarter to quarter in the past, and we expect our operating results to vary from quarter to quarter in the
future due to a variety of factors, many of which are outside of our control. Although our revenues are subject to fluctuation, significant portions of our expenses are not variable in the short term,
and we cannot reduce them quickly to respond to decreases in revenues. Therefore, if revenues are below our expectations, this shortfall is likely to adversely and disproportionately affect our
operating results. Accordingly we may not attain positive operating margins in future quarters. Any of these factors could cause our operating results to be below the expectations of securities
analysts and investors, which likely would negatively affect the price of our common stock. </FONT></P>

<P><FONT SIZE=2><B><I>The price of our common stock has been volatile in the past and may continue to be volatile in the future due factors outside of our control.  </I></B></FONT></P>


<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The market price of our common stock has been highly volatile in the past and may continue to be volatile in the future. For example, since August&nbsp;5, 2003,
the market price of our common stock on The Nasdaq SmallCap Market has fluctuated between $0.91 and $5.54 per share. The market price of our common stock may fluctuate significantly in response to a
number of factors, many of which are outside our control, including:

 </FONT>

</P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>variations
in our quarterly operating results;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>changes
in estimates of our financial performance by securities analysts;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>changes
in market valuations of our competitors;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>announcements
by us or our competitors of new products, significant contracts, acquisitions, strategic relationships, joint ventures or capital commitments;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>product
or design flaws, product recalls or similar occurrences;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>additions
or departures of key personnel;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>sales
of common stock in the future; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>fluctuations
in stock market prices and volume, which can be particularly common among network security and other high technology companies. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER"><FONT SIZE=2>9</FONT></P>

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<UL>
</UL>
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<P><FONT SIZE=2><B><I>Our recent reductions in our work force may make it more difficult for us to attract and retain the personnel necessary to successfully operate our
business.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We rely upon the continued service of a relatively small number of key technical, sales and senior management personnel. Our future success depends on retaining
our key employees and our continuing ability to attract, train and retain other highly qualified technical, sales and managerial personnel. We have employment agreements with relatively few of our key
technical, sales and senior management personnel. As a result, our employees could resign with little or no prior notice. We may not be able to attract, assimilate or retain other highly qualified
technical, sales and managerial personnel in the future, especially given our recent reductions in force. The loss of any of our key technical, sales and senior management personnel or our inability
to attract, train and retain additional qualified personnel could seriously harm our business. </FONT></P>

<P><FONT SIZE=2><B><I>Certain rights of the holders of 5% convertible preferred stock may hinder our ability to raise additional financing.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We cannot issue shares of capital stock with rights senior to those of our existing preferred or incur certain indebtedness without the approval of at least a
majority of the holders of our 5% convertible preferred stock. In addition, holders of the preferred stock who are not executive officers or directors have the right to purchase a pro rata portion of
certain future issuances of securities by us. The combination of these provisions could hinder or delay our ability to raise additional debt or equity financing. </FONT></P>


<P><FONT SIZE=2><B><I>You will experience substantial dilution upon the conversion of the shares of preferred stock and exercise of warrants that we issued in a private
placement.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On March&nbsp;25, 2004, we completed a $5,000,000 private placement in connection with which we issued 1,000,000 shares of our 5% Convertible Preferred Stock
and warrants to acquire 556,619 shares of our common stock. The conversion price for the preferred stock and the exercise price of the warrants is $3.144 per share. We also issued our placement agent
a warrant for 64,408 shares of our common stock at an exercise price of $3.144 per share. As a result, we expect the private placement to result in dilution to holders of our common stock upon
conversion of the preferred stock and exercise of the warrants of 2,221,358 shares of common stock, or an approximately 43% increase in the number of shares of our common stock outstanding. </FONT></P>

<P><FONT SIZE=2><B><I>The conversion of preferred stock or exercise of warrants we issued in the private placement may cause the price of our common stock to decline.  </I></B></FONT></P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon the effectiveness of the registration statement related to this prospectus, the holders of preferred stock and warrants we issued in the private placement
will be able to freely convert their shares of preferred stock and exercise their warrants and sell their underlying shares of common stock. For the four weeks ended on July&nbsp;30, 2004, the
average daily trading volume of our common stock on The Nasdaq SmallCap Market was 7,640 shares. Consequently, if holders of preferred stock or warrants elect to convert their shares or exercise their
warrants and sell a material amount of their underlying shares of common stock on the open market, the increase in selling activity could cause a decline in the market price of our common stock.
Furthermore, these sales, or the potential for these sales, could encourage short sales, causing additional downward pressure on the market price of our common stock.

</FONT>

</P>

<P ALIGN="CENTER"><FONT SIZE=2>10</FONT></P>

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<P><FONT SIZE=2><B><I>The percentage of our revenues attributable to sales of PDS products integrated with software of Check Point Software Technologies decreased from 29.1%
in 2002 to 16.7% in 2003 and from 25.7% for the first quarter of 2003 to 4.6% for the first quarter of 2004. Because sales of our newer products may not offset the reduced sales of our PDS products, a
change in our relationship with Check Point could have a negative effect on our operating results.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our PDS family of security appliances, which are integrated with Check Point Software Technologies' market-leading
VPN-1&reg;/FireWall-1&reg; software, represented 4.6% of our revenues for the quarter ended March&nbsp;31, 2004, and 16.7% of our revenues for the year ended
December&nbsp;31, 2003. These percentages are down from 25.7% of our revenues for the quarter ended March&nbsp;31, 2003, and 29.1% of our revenues for the year ended December&nbsp;31, 2002. We
expect the percentage of our sales attributable to our PDS products to decline in the future; however, our reliance on newer product sales may not replace the anticipated decline in revenue from sales
of our PDS products. Although we are a certified appliance partner of Check Point and our PDS products have received Check Point certification, we have no long-term agreement or exclusive
relationship with Check Point. As a result, the loss or significant change in our relationship with Check Point, the failure of our PDS products to maintain or receive Check Point certification, the
business failure of Check Point or its acquisition by or of one of our competitors and the loss of market share of Check Point or market acceptance of its products could each have a material adverse
effect on our business, financial condition and results of operations. </FONT></P>

<P><FONT SIZE=2><B><I>Our acquisition of complementary products or businesses may adversely affect our financial condition.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We have made acquisitions in the past, and, in the future, we may acquire or invest in additional companies, business units, product lines or technologies to
accelerate the development of products and sales channels complementary to our existing products and sales channels. Negotiation of potential acquisitions and integration of acquired products,
technologies or businesses could divert our management's time and resources. Future acquisitions could cause us to issue equity securities that would dilute your ownership of us, incur debt or
contingent liabilities, amortize intangible assets or write off in-process research and development, goodwill and other acquisition-related expenses that could seriously harm our financial
condition and operating results. Further, if we are not able to properly integrate acquired products, technologies or businesses with our existing products and operations, train, retain and motivate
personnel from the acquired business or combine potentially different corporate cultures, we may not receive the intended benefits of our acquisitions, which could adversely affect our business,
operating results and financial condition. </FONT></P>

<P><FONT SIZE=2><B><I>The payment of accrued dividends on our 5% convertible preferred stock may strain our cash resources.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shares of our 5% convertible preferred stock accrue cash dividends equal to $0.25 per share per annum. These dividends are payable in arrears on March&nbsp;31
and September&nbsp;30 of each year,
commencing on September&nbsp;30, 2004. Delaware law provides that we may only pay dividends out of our capital surplus or, if no surplus is available, out of our net profits for the fiscal year the
dividend is declared and/or the preceding fiscal year. We have not had net profits for the last two fiscal years, and as of March&nbsp;31, 2004 our capital surplus, defined as the amount by which
our net assets exceed our stated capital, was approximately $2.7&nbsp;million. Therefore, we have only limited resources to pay these dividends. In addition, the payment of these dividends could
strain our available cash resources which could adversely affect our ability to operate or grow our business. </FONT></P>

<P><FONT SIZE=2><B><I>Compliance with export regulations may hinder our sales to foreign customers.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Certain of our data security products incorporate encryption and other technology that may require clearance and export licenses from the U.S. Department of
Commerce under United States export regulations. Any inability to obtain these clearances or licenses or any foreign regulatory </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>11</FONT></P>

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<P><FONT SIZE=2>approvals,
if required, on a timely basis could delay sales and have a material adverse effect on our operating results. </FONT></P>

<P><FONT SIZE=2><B><I>Provisions of our charter documents and Delaware law may have anti-takeover effects.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Certain provisions of our certificate of incorporation and bylaws, such as our ability to offer "blank check" preferred stock and the inability of our
stockholders to act by written consent, could make it more difficult for a third party to acquire us, even if doing so would be beneficial to our stockholders. We are also subject to the provisions of
Section&nbsp;203 of the Delaware General Corporation Law, which restricts certain business combinations with interested stockholders and could inhibit a non-negotiated merger or other
business combination. </FONT></P>

<P><FONT SIZE=2><B><I>Our management and larger stockholders exercise significant control over our company and may approve or take actions that may be adverse to your
interests.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As of May&nbsp;31, 2004, our executive officers, directors and 5% stockholders beneficially own approximately 38.5% of our voting power. As a result, these
stockholders will be able to exercise significant control over all matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions, which
could delay or prevent someone from acquiring or merging with us. These stockholders may use their influence to approve or take actions that may be adverse to your interests. </FONT></P>

<P><FONT SIZE=2><B><I>Our management may spend the proceeds of this offering in ways with which you do not agree.  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our management will have broad discretion over how we use the net proceeds of this offering and could spend proceeds in ways with which you do not agree. Pending
deployment of the funds, the proceeds may be invested in ways that do not yield favorable returns. Please see the "</FONT><FONT SIZE=2><I>Use of Proceeds</I></FONT><FONT SIZE=2>" section of this
prospectus for information about how we plan to use the proceeds of this offering. </FONT></P>

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<BR></FONT><FONT SIZE=2><B>NOTE REGARDING FORWARD-LOOKING STATEMENTS    <BR>    </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus and the materials incorporated herein by reference contain forward-looking statements that involve substantial risks and uncertainties. You can
identify these statements by forwarding-looking words such as "may," "will," "expect," "intend," "anticipate," "believe," "estimate," "continue" and other similar words. You should read statements
that contain these words carefully because they discuss our future expectations, make projections of our future results of operations or of our financial condition or state other "forward-looking"
information. We believe that it is important to communicate our future expectations to our investors. However, there may be events in the future that we are not able to accurately predict or control.
Our actual results could differ materially from the expectations we describe in our forward-looking statements as a result of certain factors, as more fully described in the "Risk Factors" section of
this prospectus and the section entitled "Factors That May Affect Future Results of Operations" and elsewhere in the documents we file with the SEC that are incorporated herein. </FONT></P>

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<BR></FONT><FONT SIZE=2><B>DESCRIPTION OF SECURITIES AND RELATED TRANSACTIONS    <BR>    </B></FONT></P>

<P><FONT SIZE=2><I>Private Placement  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On March&nbsp;25, 2004, we completed a private placement under Rule&nbsp;506 of Regulation&nbsp;D with six institutional investors and three individual
accredited investors, including G. Ward Paxton, our Chairman, President and Chief Executive Officer, and James F. Gero, a member of our Board of Directors, pursuant to which the investors paid us an
aggregate of $5,000,000 in consideration for (1)&nbsp;1,000,000 shares of our 5% convertible preferred stock convertible into shares of our common stock at an initial conversion price of $3.144 per
share and (2)&nbsp;warrants to purchase up to 556,619 shares of our common stock at an initial exercise price of $3.144 per share. The conversion price of the preferred stock and the exercise price
of the warrants are subject to adjustments for stock dividends, splits, combinations, reclassifications and similar transactions. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to the terms of the Securities Purchase Agreement entered into in connection with the private placement, we granted each investor, other than Mr.&nbsp;Paxton and
Mr.&nbsp;Gero, who continues to own shares of preferred stock prior to the sale, the right to purchase a pro rata portion of certain future sales of securities by us based on the ratio of the number
of shares of our common stock held by that eligible investor, including any shares of common stock issuable upon the conversion of the preferred stock and the exercise of the warrants owned by that
eligible investor, to the total number of shares of our common stock outstanding immediately prior to the sale, assuming the conversion of outstanding preferred stock and the exercise of the
outstanding warrants. However, if the future sale is at a price below the average trading price of our common stock for the ten days preceding the sale, each of the eligible investors will have the
right to purchase a pro rata portion of the new securities based on the ratio of the number of shares of common stock owned by that eligible investor, assuming the conversion of the preferred stock
and the exercise of the warrants owned by that investor, to the total number of shares of common stock then owned by all the eligible investors, assuming the conversion of all outstanding preferred
stock and the exercise of all outstanding warrants. As a result, eligible investors will have the right to purchase 100% of the securities we offer to sell at below market price. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
investors' right of purchase will not apply to the following issuances by us, regardless of whether these issuances are below market price: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>shares
issuable upon the conversion of the preferred stock or the exercise of the warrants;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>securities
we issue to directors, officers and consultants as compensation;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>shares
of stock issued in connection with a stock split, stock dividend or recapitalization;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>securities
we issue in connection with commercial agreements;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>securities
we issue in connection with commercial lending and lease transactions;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>securities
issued in connection with acquisitions; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>shares
of stock issued in an underwritten public offering. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2><I>Compensation of Placement Agent  </I></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Black Point Partners,&nbsp;Inc. acted as our placement agent for the private placement financing. As compensation for services rendered to us by Black Point
Partners, we agreed to: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>pay
Black Point Partners a retainer fee of $15,000 in cash;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>pay
Black Point Partners a cash fee equal to $185,000, or 4% of gross proceeds we received in the private placement after credit of the $15,000 retainer fee; and </FONT></DD></DL>
</UL>
<P ALIGN="CENTER"><FONT SIZE=2>13</FONT></P>

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<UL>
</UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>issue
to Black Point Partners a warrant to purchase an aggregate of 64,409 shares of our common stock at an exercise price of $3.144 per share. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
issued the warrant to Black Point Partners pursuant to Rule&nbsp;506 of Regulation&nbsp;D. The terms of this warrant are described below in "Terms of the
Warrants&#151;Black Point Partners Warrants." </FONT></P>


<P><FONT SIZE=2><I>Terms of the 5% Convertible Preferred Stock  </I></FONT></P>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dividends.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Holders of preferred stock are entitled to a 5% per annum dividend per share. The dividend accrues and is payable
in cash semi-annually on the last business day of March&nbsp;and September. Accrued but unpaid dividends are also payable upon the conversion or redemption of the shares of preferred
stock and upon a liquidation event. </FONT></P>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Voting Rights.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Holders of preferred stock will vote together with shares of common stock on an as converted to common stock
basis. Based on the conversion rate of the preferred stock, holders of shares of preferred stock will receive 1.5903 votes for each share. After aggregating all voting rights of a particular holder,
any fractional votes are rounded to the nearest whole number. As a result, a holder of 100 shares of preferred stock would be entitled to 159 votes on any matters submitted to our stockholders for
approval. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, as long as any shares of preferred stock are outstanding, we cannot take any of the following actions without the separate class vote or written consent of a majority of the
then outstanding shares of preferred stock: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>redeem,
repurchase or acquire for value any shares of the preferred stock other than pursuant to the conversion and redemption provisions of the preferred stock;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>redeem,
repurchase or acquire for value any shares of our common stock other than under agreements pursuant to which we have the right to repurchase common stock from
employees, officers, directors, consultants and other service providers upon their termination or other events at a price no greater than the original cost of the shares plus interest at no more than
9% per annum as long as the total amount we repurchase does not exceed $100,000 in any 12-month period; or
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>issue
any debt securities or incur indebtedness for borrowed money, other than in connection with a strategic commercial agreement approved by our board of directors,
pursuant to a commercial borrowing, secured lending or lease financing transaction approved by our board of directors or in connection with an acquisition. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Conversion.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The preferred stock, which is comprised of an aggregate of 1,000,000 authorized shares, is convertible, at the
option of the holders, into shares of our common stock at an initial conversion price of $3.144 per share. Based on the original purchase price of $5.00 per share, each share of preferred stock is
initially convertible into 1.5903 shares of our common stock. The preferred stock contains adjustment provisions upon the occurrence of stock splits, stock dividends, combinations, reclassifications
or similar events of our capital stock. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
holder of preferred stock cannot convert shares of preferred stock into shares of our common stock if that holder would beneficially own greater than 9.9% of our issued and outstanding
shares of common stock, as determined in accordance with Section&nbsp;13(d)&nbsp;of the Exchange Act, upon conversion of the preferred stock. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>14</FONT></P>

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<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Redemption.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We have the right to redeem any or all of the outstanding shares of preferred stock at a price of $5.00 per share
plus any accrued but unpaid dividends at any time after September&nbsp;25, 2004 if the following conditions are met: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
volume weighted average price of our common stock for ten consecutive trading days must be at least 200% of the conversion price of the preferred stock then in effect,
for a period of any 20 out of 30 consecutive trading days immediately preceding the redemption;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
shares of common stock underlying the shares of preferred stock can be sold without restriction on resale;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
registration statement related to this prospectus is effective at all times during the period beginning at least 30&nbsp;days prior to our notice of redemption and
ending on the earlier to occur of the redemption date or the last date we are required to keep the registration statement effective; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
registration statement related to this prospectus is expected to remain effective until the earlier of 30&nbsp;days following the earlier to occur of the redemption
date and the last day we are required to keep the registration effective. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rank; Liquidation Preference.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The holders of preferred stock rank prior to the holders of our common stock and, unless
otherwise consented to by the holders of preferred stock, prior to all other classes of capital stock currently outstanding, or that we may establish, with respect to the distribution of our assets
upon a bankruptcy, liquidation or other similar event. The liquidation preference for the preferred stock is an amount equal to $5.00 per share plus any accrued and unpaid dividends. </FONT></P>


<P><FONT SIZE=2><I>Terms of the Warrants  </I></FONT></P>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Private Placement Warrants.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The warrants we issued in the private placement have an initial exercise price of $3.144 per
share and are exercisable for our common stock at any time on or before March&nbsp;25, 2009. The warrants contain a cashless exercise provision, permitting the holder, in lieu of paying the exercise
price, to surrender the warrant for a number of shares of common stock determined by multiplying the number of shares of common stock underlying the warrant by a fraction based on the exercise price
of the warrant and the current market value of our common stock. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
of the warrants contain adjustment provisions upon the occurrence of stock splits, stock dividends, combinations, reclassification or similar events of our capital stock. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
holder of a warrant cannot exercise warrants for shares of our common stock if that holder would beneficially own greater than 9.9% of our issued and outstanding shares of common
stock, as determined in accordance with Section&nbsp;13(d)&nbsp;of the Exchange Act, upon exercise of the warrants. </FONT></P>

<P><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Black Point Partners Warrant.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The warrant we issued to Black Point Partners has an initial exercise price of $3.144 per share
and is exercisable for our common stock at any time on or before March&nbsp;25, 2009. The warrant contains a cashless exercise provision, permitting Black Point Partners, in lieu of paying the
exercise price, to surrender the warrant for a number of shares of common stock determined by multiplying the number of shares of common stock underlying the warrant by a fraction based on the
exercise price of the warrant and the current market value of our common stock. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
warrant contains adjustment provisions upon the occurrence of stock splits, stock dividends, combinations, reclassification or similar events of our capital stock. </FONT></P>


<P><FONT SIZE=2><I>Registration Rights  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In connection with the Securities Purchase Agreement, we entered into a Registration Rights Agreement, pursuant to which we are required to file&nbsp;a
registration statement to register the </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>15</FONT></P>

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<P><FONT SIZE=2>2,146,950&nbsp;shares
of common stock issuable upon the conversion of the preferred stock and upon the exercise of the warrants issued to the investors in the private placement. This prospectus
relates to the registration of all of these shares of common stock. If the registration statement relating to this prospectus is not declared effective by the SEC by July&nbsp;24, 2004, we may be
subject to the payment of liquidated damages equal to 2% of the aggregate purchase price paid to us in the private placement for each thirty-day period, pro rated for any shorter period,
that the filing or effectiveness of the registration statement is delayed. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus also includes 337,338 shares previously acquired by Gryphon Master Fund, L.P., one of the investors, 125,000 shares previously acquired by Mr.&nbsp;Gero, one of our
directors and an investor, and the 64,409 shares of common stock underlying the warrant we issued to Black Point Partners. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
a condition to the consummation of the private placement, each of our executive officers and directors has agreed not to sell any shares of our common stock owned by them until the
registration statement relating to this prospectus is declared effective. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
must keep the registration statement related to this prospectus effective until the earliest to occur of March&nbsp;25, 2006, the date on which all shares of common stock covered by
the registration statement are sold and the termination of the registration rights agreement. </FONT></P>

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<BR></FONT><FONT SIZE=2><B>PLAN OF DISTRIBUTION    <BR>    </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shares of our common stock held by the selling stockholders and covered by this prospectus may be sold or distributed at any time or from time to time by the
selling stockholders, their pledgees, donees, transferees or other successors in interest, in one or more transactions. The selling stockholders will act independently of us in making decisions with
respect to the timing, manner and size of each sale. The selling stockholders may sell their shares at market prices prevailing at the time of sale, at prices related to the then current market price,
at varying prices determined at the time of sale in negotiated transactions, or at such other price as the selling stockholders may determine from time to time. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
selling stockholders may offer their shares at various times in one or more of, or a combination of, the following or other kinds of transactions: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>transactions
on any national securities exchange or U.S. inter-dealer system of a registered national securities association on which the common stock may be listed or
quoted at the time of sale;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>in
the over-the-counter market;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>in
private transactions and transactions otherwise than on these exchanges or systems or in the over-the-counter market;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>in
connection with short sales of the shares;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>by
pledge to secure or in payment of debt and other obligations;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>through
the writing of options, whether the options are listed on an options exchange or otherwise; or
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>in
connection with the writing of non-traded and exchange-traded call options, in hedge transactions and in settlement of other transactions in standardized or
over-the-counter options. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No
selling stockholder had any agreement or understanding, directly or indirectly, with any person to distribute the shares underlying the preferred stock and warrants at the time the
selling stockholder purchased them. All of the selling stockholders purchased the securities in the ordinary course of business. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the selling stockholders effect these transactions by selling shares to or through broker-dealers or agents, those broker-dealers or agents may receive compensation in the form of
commissions, discounts or concessions from selling stockholders or commissions from purchasers of the shares for whom they may act as agent. These commissions, discounts or concessions as to a
particular broker-dealers or agents may be in excess of customary commissions in the types of transactions involved. Broker-dealers or agents and any other participating broker-dealers or the selling
stockholders may be deemed to be "underwriters" within the meaning of Section&nbsp;2(11) of the Securities Act in connection with sales of the shares. Because selling stockholders may be deemed to
be "underwriters" within the meaning of Section&nbsp;2(11) of the Securities Act, the selling stockholders will be subject to the prospectus delivery requirements of the Securities Act. The selling
stockholders have not entered into any agreements, understandings or arrangements with any underwriters or broker-dealers with respect to the sale of the shares covered by this prospectus. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
selling stockholders may enter into hedging transactions with broker-dealers or other financial institutions in connection with distributions of the shares or otherwise. In these
transactions, broker-dealers or other financial institutions may engage in short sales of the shares in the course of hedging the positions they assume with selling stockholders. The selling
stockholders also may sell shares short and redeliver the shares to close out short positions. Several of the selling stockholders have entered into sort positions as of the date hereof. None of the
shares issuable upon conversion of the preferred </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>17</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<BR>

<P><FONT SIZE=2>stock
or exercise of the warrants and none of the other shares described in this prospectus will be used to cover any of these short positions or any other short positions prior to the effectiveness
of the registration statement relating to this prospectus. The selling stockholders may enter into option or other transactions with broker-dealers or other financial institutions which require the
delivery to the broker-dealer or financial institutions of the shares. The broker-dealer or other financial institutions may then resell or otherwise transfer those shares pursuant to this prospectus. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
selling stockholders also may loan or pledge the shares to a broker-dealer. The broker-dealer or other financial institutions may sell the shares so loaned, or upon a default the
broker-dealer may sell the pledged shares pursuant to this prospectus. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
the securities laws of certain states, the shares may be sold in those states only through registered or licensed brokers or dealers. In addition, in certain states the shares may
not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Selling
stockholders may also resell all or a portion of the shares in open market transactions in reliance upon Rule&nbsp;144 under the Securities Act, rather than under this
prospectus, provided they meet the criteria and conform to the requirements of such rule. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
applicable rules&nbsp;and regulations under the Exchange Act, any person engaged in the distribution of the shares may not simultaneously engage in market making activities with
respect to our common stock until his or her participation in that distribution is completed. In addition, each selling stockholder will be subject to applicable provisions of the Exchange Act and the
associated rules&nbsp;and regulations under the Exchange Act, including Regulation&nbsp;M, which provisions may limit the timing of purchases and sales of shares of common stock by the selling
stockholders. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will make copies of this prospectus available to the selling stockholders. We have informed them of the need for delivery of copies of this prospectus to purchasers at or prior to the
time of any sale of the shares offered hereby. The selling stockholders may agree to indemnify any broker-dealer or agent that participates in transactions involving sales of the shares against
certain liabilities, including liabilities under the Securities Act. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;At
the time a particular offer of shares is made, we will file&nbsp;a supplement to this prospectus, if required, that will disclose: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
name of each such selling stockholder and of the participating broker-dealer(s);
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
number of shares involved;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
price at which such shares were sold;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
commissions paid or discounts or concessions allowed to such broker-dealer(s), where applicable;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>that
such broker-dealer(s) did not conduct any investigation to verify the information set out or incorporated by reference in this prospectus; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>other
facts material to the transaction. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, upon being notified by a selling stockholder that a donee or pledgee intends to sell more than 500 shares, we will file&nbsp;a supplement to this prospectus. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
entered into the registration rights agreement described under "Description of Securities and Related Transactions&#151;Registration Rights" for the benefit of the selling
stockholders to register the shares of common stock under applicable federal and state securities laws. Pursuant to the terms of the registration rights agreement, we will pay all expenses of the
registration of the shares except that the selling stockholders will pay any applicable commissions and discounts attributable to the sales of the </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>18</FONT></P>

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<P style='page-break-before:always'></p>
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<A NAME="page_de1483_1_19"> </A>
<BR>

<P><FONT SIZE=2>shares
and costs and expenses of their own counsel. We have agreed to indemnify the selling stockholders against certain liabilities relating to the registration statement, including liabilities under
the Securities Act. Conversely, each selling stockholder has agreed to indemnify us against certain liabilities relating to the information given to us in writing by that selling stockholder for
inclusion in the registration statement, including liabilities under the Securities Act. </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="de1483_use_of_proceeds"> </A>
<A NAME="toc_de1483_2"> </A>
<BR></FONT><FONT SIZE=2><B>USE OF PROCEEDS    <BR>    </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We will receive the exercise price of the warrants, if they are exercised for cash, but will receive no proceeds from the resale of the underlying shares which
may be offered hereby. As of the date of this prospectus, if all of the warrants for which we are registering the underlying shares of our common stock are exercised for cash, we would receive an
aggregate of approximately $1,952,512.03. We intend to use the proceeds, if any, from the exercise of the warrants for general corporate purposes and working capital. </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2>19</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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NAME="page_dg1483_1_20"> </A> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="dg1483_selling_stockholders"> </A>
<A NAME="toc_dg1483_1"> </A>
<BR></FONT><FONT SIZE=2><B>SELLING STOCKHOLDERS    <BR>    </B></FONT></P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table identifies each of the selling stockholders and sets forth information as of the date of this prospectus with respect to the number of shares
which may be offered under this prospectus from time to time by each selling stockholder. This information includes shares obtainable upon conversion or exercise of shares of preferred stock and
warrants, which are currently convertible or exercisable into shares of our common stock. Except as otherwise indicated, the persons named in the table below have sole investment and voting power with
respect to all shares beneficially owned, subject to community property laws, where applicable. Percentage ownership is based on 5,166,312 shares of our common stock outstanding on August&nbsp;5,
2004 and reflects a four-for-one (4:1) reverse split of our common stock effective March&nbsp;29, 2004. For purposes of this table, the shares of common stock beneficially
owned by a person or group of persons before the offering equals the sum of:

 </FONT>

</P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>any
shares beneficially owned unrelated to the preferred stock and warrants, including any shares that person or group has the right to acquire within 60&nbsp;days;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
shares beneficially owned underlying the preferred stock based on a conversion price of $3.144; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
shares beneficially owned underlying the warrants based on an exercise price between $3.144. In calculating the percentage for each selling stockholder, the shares
issuable upon conversion of the preferred stock and exercise of the warrants for any selling stockholder are included in the denominator of the shares outstanding for that selling stockholder but are
not included in the denominator for any other person. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
the terms of the preferred stock and warrants we issued in the private placement, the shares of preferred stock are convertible and the warrants are exercisable by any selling
stockholder only to the extent that the number of shares of common stock issuable pursuant to those securities, together with the number of shares of our common stock owned by that selling stockholder
and its affiliates (but not including shares of common stock underlying unconverted portions of the preferred stock or
unexercised portions of the warrants) would not exceed 9.9% of the then outstanding common stock as determined in accordance with Section&nbsp;13(d)&nbsp;of the Exchange Act. Accordingly, the
number of shares of common stock set forth in the column "Shares Offered" in the table below for certain selling stockholders exceeds the number of shares of common stock that the selling stockholder
could beneficially own at any given time through the ownership of these preferred stock or warrants. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
of the shares of common stock being offered by this prospectus are being offered by the selling stockholders for their own accounts. Because the selling stockholders may sell all,
some or none of the shares covered by this prospectus, and there are currently no agreements, arrangements or understandings with any of the selling stockholders with respect to the sale of any of the
shares, we cannot estimate the number of shares or the percentage of outstanding shares of common stock, that will be held by any of them upon termination of this offering. For purposes of this table,
we are assuming that the selling stockholders will sell all of the shares offered by this prospectus and will not acquire any additional shares. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus also covers any additional shares of common stock which may become issuable in connection with shares sold by reason of a stock dividend, stock split, recapitalization or
other similar transaction effected without us receiving any cash or other value, which results in an increase in the number of our outstanding shares of common stock. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Of
the 2,673,697 shares of common stock being offered by the selling stockholders: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>2,146,950
shares are issuable upon conversion of the preferred stock and exercise of the warrants purchased by the investors in the private placement described under "The
Transactions&#151;Private Placement" and "Description of Securities and Related Transactions&#151;Private Placement;" </FONT></DD></DL>
</UL>
<P ALIGN="CENTER"><FONT SIZE=2>20</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<A NAME="page_dg1483_1_21"> </A>
<UL>
<UL>
</UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>64,409
shares are issuable upon the exercise of the warrant we issued to Black Point Partners,&nbsp;Inc. for acting as our placement agent in the private placement; see
"The Transactions&#151;Compensation of Placement Agent," "Description of Securities and Related Transactions&#151;Compensation of Placement Agent," and "Certain Relationships among the
Selling Stockholders and Intrusion&#151;Black Point Partners,&nbsp;Inc.;" and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>462,338
shares were acquired by Mr.&nbsp;Gero and Gryphon Master Fund, L.P. at a price of $0.57&nbsp;per share in privately negotiated transactions with SAIC Venture
Capital Corporation on February&nbsp;4, 2004. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other
than Black Point Partners, Mr.&nbsp;Gero and Mr.&nbsp;Paxton, none of the selling stockholders has had a material relationship with us within the past three years other than as
a result of the ownership of shares or our common stock or other securities. See "Certain Relationships among the Selling Stockholders and Intrusion." </FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="85%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH COLSPAN=2 ALIGN="LEFT"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH WIDTH="13%" ALIGN="LEFT"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH WIDTH="12%" ALIGN="LEFT"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH WIDTH="2%" ROWSPAN=3><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=3 ROWSPAN=3 ALIGN="CENTER"><FONT SIZE=1><B>Shares Owned<BR>
After the Offering</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH COLSPAN=2 ALIGN="LEFT"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH WIDTH="2%" ROWSPAN=3><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="13%" ROWSPAN=3 ALIGN="CENTER"><FONT SIZE=1><B>Shares Beneficially Owned Before Offering</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="12%" ALIGN="LEFT"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH COLSPAN=2 ROWSPAN=2 ALIGN="LEFT"><FONT SIZE=1><B>Name of Selling Stockholder<BR> </B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%" ROWSPAN=2><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="12%" ROWSPAN=2 ALIGN="CENTER"><FONT SIZE=1><B>Shares<BR>
Offered</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="10%" ALIGN="CENTER"><FONT SIZE=1><B>Number</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="7%" ALIGN="CENTER"><FONT SIZE=1><B>Percent</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Black Point Partners,&nbsp;Inc.(1)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>64,409</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>64,409</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Gero, James F.</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>318,430</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>253,817</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>64,613</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.9</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Gryphon Master Fund, L.P.(2)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>831,136</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>831,136</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Paxton, G. Ward(3)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>671,075</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>300,572</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>370,503</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>5.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Crestview Capital Master, L.L.C.(4)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>343,512</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>343,512</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Enable Growth Partners, L.P.(5)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>193,226</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>193,226</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Marshall B. Payne</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>42,940</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>42,940</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Renaissance Capital Growth&nbsp;&amp; Income Fund&nbsp;III,&nbsp;Inc.(6)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>Renaissance US Growth Investment Trust PLC(6)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD COLSPAN=2><FONT SIZE=2>BFS US Special Opportunities Trust PLC(6)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>214,695</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>0.0</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD WIDTH="2%">&nbsp;</TD>
<TD WIDTH="46%"><FONT SIZE=2>Total</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><FONT SIZE=2>3,108,813</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><FONT SIZE=2>2,673,697</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><FONT SIZE=2>435,116</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><FONT SIZE=2>5.9</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>%</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="13%" ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="12%" ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="10%" ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="7%" ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->

<HR NOSHADE ALIGN="LEFT" WIDTH="120">

<P><FONT SIZE=2>*&nbsp;Less
than 1% </FONT></P>

<P><FONT SIZE=2><I>Footnotes to Selling Stockholder Table:</I></FONT>
</P>

<DL compact>

<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>Charles
T. Manuel has voting and/or investment control over the shares held by Black Point Partners,&nbsp;Inc. Mr.&nbsp;Manuel disclaims beneficial ownership of these shares.


 </FONT></DD>



<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD><FONT SIZE=2>Gryphon
Master Fund, L.P. has shared voting power and shared dispositive power over all of these shares with Gryphon Management Partners, L.P., Gryphon Partners, L.P., Gryphon
Partners (QP), L.P., Gryphon Advisors, LLC and E.B. Lyon IV. Gryphon Partners, L.P. is the general partner of Gryphon Master Fund, L.P. Gryphon Management Partners, L.P. is the general partner of
Gryphon Partners, L.P. Gryphon Advisors, LLC is the general partner of Gryphon Management Partners, L.P. Mr.&nbsp;Lyon controls Gryphon Advisors, LLC and has voting and/or investment control over
the shares held by Gryphon Master Fund, L.P. Mr.&nbsp;Lyon disclaims beneficial ownership of these shares.

 </FONT></DD>

<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(3)</FONT></DT><DD><FONT SIZE=2>Includes
the equivalent of 5,077 shares held by Mr.&nbsp;Paxton in the Intrusion Stock Fund in the 401(k) Savings Plan.


</FONT></DD>

<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(4)</FONT></DT><DD><FONT SIZE=2>Stew
Fink and Richard Levy have voting and/or investment control over the shares held by Crestview Capital Master, L.L.C. Mr.&nbsp;Fink and Mr.&nbsp;Levy disclaim beneficial
ownership of these shares.


</FONT></DD>



<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(5)</FONT></DT><DD><FONT SIZE=2>Mitch
Levine has voting and/or investment control over the shares held by Enable Growth Partners, L.P. Mr.&nbsp;Levine disclaims beneficial ownership of those shares.


 </FONT></DD>



<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(6)</FONT></DT><DD><FONT SIZE=2>RENN
Capital Group,&nbsp;Inc. is the investment advisor or manager to Renaissance Capital Growth&nbsp;&amp; Income Fund III,&nbsp;Inc., Renaissance US Growth Investment Trust PLC
and BFS US Special </FONT>

</DD>

</DL>
<P ALIGN="CENTER"><FONT SIZE=2>21</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<A NAME="page_dg1483_1_22"> </A>
<UL>



<P><FONT SIZE=2>Opportunities
Trust PLC. Russell Cleveland is the president of RENN Capital Group,&nbsp;Inc. and has voting and/or investment control over the shares held by these entities. Mr.&nbsp;Cleveland
disclaims beneficial ownership of these shares.

 </FONT></P>


</UL>

<P><FONT SIZE=2><B>Certain Relationships among the Selling Stockholders and Intrusion  </B></FONT></P>


<P><FONT SIZE=2><I>Directors and Executive Officers  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following selling stockholders are directors and, in one instance, an executive officer of our company: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>G.
Ward Paxton&#151;President, Chief Executive Officer, Chairman of the Board and director; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>James
F. Gero&#151;director. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2><I>Black Point Partners,&nbsp;Inc.  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Black Point Partners,&nbsp;Inc. acted as our financial advisor and exclusive placement agent in connection with the issuance of our 5% convertible preferred
stock and warrants to the investors in the private placement. As compensation for acting as our placement agent, we paid Black Point Partners an aggregate of $200,000. In addition, we issued Black
Point Partners a warrant to purchase an aggregate of 64,409 shares of our common stock at an exercise price of $3.144 per share. </FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="dg1483_legal_matters"> </A>
<A NAME="toc_dg1483_2"> </A>
<BR></FONT><FONT SIZE=2><B>LEGAL MATTERS    <BR>    </B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The validity of the common stock offered hereby will be passed upon for us by Patton Boggs LLP, Dallas, Texas. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="dg1483_experts"> </A>
<A NAME="toc_dg1483_3"> </A>
<BR></FONT><FONT SIZE=2><B>EXPERTS    <BR>    </B></FONT></P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our consolidated financial statements and schedule for the years ended December&nbsp;31, 2002 and 2001 appearing in our Annual Report
(Form&nbsp;10-K/A) for the year ended December&nbsp;31, 2003, have been audited by Ernst&nbsp;&amp; Young LLP, independent registered public accounting firm, as set forth in their report
thereon included therein and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such
firm as experts in accounting and auditing.

</FONT>

</P>

<P><FONT SIZE=2>


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our consolidated financial statements and schedule for the year ended December&nbsp;31, 2003, appearing in our Annual Report (Form&nbsp;10-K/A) for the year ended
December&nbsp;31, 2003, have been audited by KBA Group LLP, independent registered public accounting firm, as set forth in their report thereon included therein and incorporated herein by reference.
Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

</FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="dg1483_where_you_can_find_additional_information"> </A>
<A NAME="toc_dg1483_4"> </A>
<BR></FONT><FONT SIZE=2><B>WHERE YOU CAN FIND ADDITIONAL INFORMATION    <BR>    </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We file annual, quarterly and special reports, proxy statements and other information with the Securities and Exchange Commission. You may read and copy any
document we file at the SEC's public reference room in Washington, D.C. Please call the SEC at 1-800-SEC-0330 for further information on the public reference rooms.
Our SEC filings are also available to you without charge at the SEC's web site at http://www.sec.gov. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
SEC allows us to "incorporate by reference" the information we file with them, which means that we can disclose important information to you by referring you to those documents. The </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>22</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<A NAME="page_dg1483_1_23"> </A>
<BR>

<P><FONT SIZE=2>information
incorporated by reference is considered to be part of this prospectus, and later information filed with the SEC will update and supersede this information. We incorporate by reference the
documents listed below and any future filings made with the SEC under Section&nbsp;13a, 13(c), or 15(d)&nbsp;of the Securities Exchange Act of 1934 until our offering is completed.


</FONT></P>

<UL>
<DL compact>

<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2003, as amended;


<BR><BR></FONT></DD>



<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31, 2004, as amended;

<BR><BR></FONT></DD>

<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>our
Current Reports on Form&nbsp;8-K dated January&nbsp;16, 2004; March&nbsp;18, 2004; March&nbsp;25, 2004; March&nbsp;26, 2004; and April&nbsp;19,
2004; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>the
description of our common stock contained in our registration statement on Form&nbsp;8-A filed with the SEC, including any amendments or reports filed for
the purpose of updating such description. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
may request a copy of these filings, at no cost, by writing or telephoning us at the following address: </FONT></P>

<UL>
<UL>

<P><FONT SIZE=2>Michael
Paxton<BR>
Vice President and Chief Financial Officer<BR>
Intrusion&nbsp;Inc.<BR>
1101 E. Arapaho Road<BR>
Richardson, Texas 75081<BR>
(972)&nbsp;234-6400 </FONT></P>

</UL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
should rely only on the information incorporated by reference or provided in this prospectus or the prospectus supplement. We have authorized no one to provide you with different
information. We are not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information in this prospectus or the prospectus supplement is
accurate as of any date other than the date on the front of the document. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>23</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
<!-- ZEQ.=4,SEQ=24,EFW="2141465",CP="INTRUSION INC",DN="1",CHK=150411,FOLIO='23',FILE='DISK015:[04DFW3.04DFW1483]DG1483A.;8',USER='TDUNNIG',CD=';6-AUG-2004;08:45' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->

<P><FONT SIZE=2>
<hr noshade width=100% align=left size=4>
<hr noshade width=100% align=left size=1> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>We have not authorized any person to make a statement that differs from what is in this prospectus. If any person does make a statement that differs from what is
in this prospectus, you should not rely on it. This prospectus is not an offer to sell, nor is it seeking an offer to buy, these securities in any state in which the offer or sale is not permitted.
The information in this prospectus is complete and accurate as of its date, but the information may change after that date.  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B>Intrusion&nbsp;Inc.  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B> <BR>
<BR>
2,673,697 Shares<BR>
of Common Stock<BR>
<BR>  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=2><B> PROSPECTUS  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<BR>
<BR>
<P ALIGN="CENTER"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;,
2004 </FONT></P>

<BR>

<P><FONT SIZE=2><hr
noshade width=100% align=left size=1>
<hr noshade width=100% align=left size=4> </FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
<!-- ZEQ.=1,SEQ=25,EFW="2141465",CP="INTRUSION INC",DN="1",CHK=190735,FOLIO='blank',FILE='DISK015:[04DFW3.04DFW1483]HO1483A.;4',USER='JBAKER',CD=';4-AUG-2004;16:37' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="page_ja1483_1_1"> </A> </FONT></P>

<!-- TOC_END -->
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="ja1483_part_ii_information_not_required_in_prospectus"> </A>
<A NAME="toc_ja1483_1"> </A>
<BR></FONT><FONT SIZE=2><B>PART II<BR>  INFORMATION NOT REQUIRED IN PROSPECTUS    <BR>    </B></FONT></P>

<P><FONT SIZE=2><B>ITEM 14.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Other Expenses of Issuance and Distribution  </I></B></FONT></P>

<!-- User-specified TAGGED TABLE -->
<DIV ALIGN="CENTER"><TABLE WIDTH="69%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>SEC Registration Fees</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>1,143.31</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Legal Fees</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>70,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>*</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Accounting Fees and Expenses</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>25,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>*</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Printing Fees</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>10,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>*</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Transfer Agent's Fees and Costs of Certificates</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>2,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>*</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Placement Agent Fees</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>200,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>Miscellaneous</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>10,000.00</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>*</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2 ALIGN="RIGHT"><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="3%">&nbsp;</TD>
<TD WIDTH="74%"><FONT SIZE=2>Total</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="16%" ALIGN="RIGHT"><FONT SIZE=2>318,143.31</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2 ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
<!-- end of user-specified TAGGED TABLE -->

<HR NOSHADE ALIGN="LEFT" WIDTH="120">
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>*</FONT></DT><DD><FONT SIZE=2>Estimated
</FONT></DD></DL>

<P><FONT SIZE=2><B>ITEM 15.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Indemnification of Directors and Officers  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law (the "DGCL") provides, in effect, that any person made a party to any action by reason
of the fact that he is or was our director, officer, employee or agent may and, in certain cases, must be indemnified by us against, in the case of a non-derivative action, judgments,
fines, amounts paid in settlement and reasonable expenses (including attorneys' fees) incurred by him as a result of such action, and in the case of a derivative action, against expenses (including
attorneys' fees), if in either type of action he acted in good faith and in a manner he reasonably believed to be in our not opposed to our best interests. This indemnification does not apply, in a
derivative action, to matters as to which it is adjudged that the director, officer, employee or agent is liable to us, unless upon court order it is determined that, despite such adjudication of
liability, but in view of all the circumstances of the case, he is fairly and reasonably entitled to indemnity for expenses, and, in a non-derivative action, to any criminal proceeding in
which such person had reasonable cause to believe his conduct was unlawful. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article&nbsp;Six,
Section&nbsp;3 of our Certificate of Incorporation provides that no director shall be liable to us or our stockholders for monetary damages for breach of fiduciary
duty as a director to the fullest extent permitted by the DGCL. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have entered into Indemnification Agreements with the each of our directors and executive officers. Pursuant to our agreements, we will be obligated, to the extent permitted by
applicable law, to indemnify our directors and officers against all expenses, judgments, fines and penalties incurred in connection with the defense or settlement of any actions brought against them
by reason of the fact that they were our directors or officers or assumed certain responsibilities at our direction. We also have purchased directors and officers liability insurance in order to limit
our exposure to liability of indemnification of directors and officers. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>II-1</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
<!-- ZEQ.=1,SEQ=26,EFW="2141465",CP="INTRUSION INC",DN="1",CHK=409038,FOLIO='II-1',FILE='DISK015:[04DFW3.04DFW1483]JA1483A.;6',USER='JBAKER',CD=';5-AUG-2004;10:55' -->
<A NAME="page_ja1483_1_2"> </A>
<BR>

<P><FONT SIZE=2><B>ITEM 16. </B></FONT><FONT SIZE=2><B><I>Exhibits and Financial Statement Schedules  </I></B></FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="76%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="10%" ALIGN="LEFT"><FONT SIZE=1><B>Exhibit Number<BR> </B></FONT><HR NOSHADE></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="89%" ALIGN="CENTER"><FONT SIZE=1><B>Description</B></FONT><HR NOSHADE></TH>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.1(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of 5% Convertible Preferred Stock Certificate.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.2(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Certificate of Designations of the 5% Convertible Preferred Stock of Intrusion Inc.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.3(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of Warrant for the Purchase of Shares of Common Stock.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.4(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Warrant to Purchase Shares of Common Stock dated March&nbsp;25, 2004 by Intrusion Inc. in favor of Black Point Partners,&nbsp;Inc.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.5(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of Lock-Up Agreement executed by Intrusion Inc. and each of its executive officers and directors.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.6(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Registration Rights Agreement dated as of March&nbsp;25, 2004 by and among Intrusion Inc. and the persons and entities listed on Exhibit&nbsp;A thereto.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
5.1(3)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Opinion of Patton Boggs LLP, regarding the legality of the securities covered by this registration statement.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
10.1(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Securities Purchase Agreement dated as of March&nbsp;25, 2004, by and among Intrusion Inc. and the purchasers listed on Exhibit&nbsp;A thereto.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.1</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of KBA Group LLP.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.2</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of Ernst&nbsp;&amp; Young LLP.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.3(3)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of Patton Boggs LLP (included in its opinion filed as Exhibit&nbsp;5.1).</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
24.1(2)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Power of Attorney.</FONT></TD>
</TR>
</TABLE>
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<HR NOSHADE ALIGN="LEFT" WIDTH="120">
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>Incorporated
herein by reference to the Registrant's Current Report on Form&nbsp;8-K dated March&nbsp;25, 2004. </FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD><FONT SIZE=2>Previously
filed with the Registrant's Registration Statement on Form&nbsp;S-3 filed on April&nbsp;20, 2004. </FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(3)</FONT></DT><DD><FONT SIZE=2>Previously
filed with the Registrant's Amendment No.&nbsp;1 to Registration Statement filed on June&nbsp;14, 2004. </FONT></DD></DL>


<P><FONT SIZE=2><B>ITEM 17.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Undertakings  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant hereby undertakes: </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;To
file, during any period in which offers or sales of securities are being made, a post-effective amendment to this registration statement: </FONT></P>

<UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;&nbsp;To
include any prospectus required by section&nbsp;10(a)(3)&nbsp;of the Securities Act of 1933; </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;&nbsp;To
reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment
thereof) which, individually or together, represent a fundamental change in the information in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may
be reflected in the form of prospectus filed with the commission pursuant to rule&nbsp;424(b)&nbsp;if, in the aggregate, the charges in volume and price represent no more than a 20% change in the
maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement; and </FONT></P>

</UL>
<P ALIGN="CENTER"><FONT SIZE=2>II-2</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<A NAME="page_ja1483_1_3"> </A>
<UL>
<BR>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;&nbsp;To
include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such
information in the registration statement; </FONT></P>

</UL>

<P><FONT SIZE=2><I>provided, however</I></FONT><FONT SIZE=2>, that paragraphs (a)(1)(i)&nbsp;and (a)(1)(ii)&nbsp;do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the registrant pursuant to Section&nbsp;13 or 15(d)&nbsp;of
the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;That,
for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp;To
remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the
offering. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to
Section&nbsp;13(a)&nbsp;or 15(d)&nbsp;of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to
Section&nbsp;15(d)&nbsp;of the Exchange Act) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be the initial </FONT><FONT SIZE=2><I>bona fide</I></FONT><FONT SIZE=2>offering thereof. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar
as indemnification for liabilities arising under the Securities Act, may be permitted to directors, officers and controlling persons of Registrant pursuant to the foregoing
provisions, or otherwise, the Registrant has been advised that in the opinion of the SEC such indemnification is against public policy
as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>II-3</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="jb1483_index_to_exhibits"> </A>
<A NAME="toc_jb1483_1"> </A>
<BR></FONT><FONT SIZE=2><B>INDEX TO EXHIBITS    <BR>    </B></FONT></P>

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<TABLE WIDTH="76%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="10%" ALIGN="LEFT"><FONT SIZE=1><B>Exhibit Number<BR> </B></FONT><HR NOSHADE></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="89%" ALIGN="CENTER"><FONT SIZE=1><B>Description</B></FONT><HR NOSHADE></TH>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.1(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of 5% Convertible Preferred Stock Certificate.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.2(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Certificate of Designations of the 5% Convertible Preferred Stock of Intrusion Inc.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.3(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of Warrant for the Purchase of Shares of Common Stock.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.4(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Warrant to Purchase Shares of Common Stock dated March&nbsp;25, 2004 by Intrusion Inc. in favor of Black Point Partners,&nbsp;Inc.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.5(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Form&nbsp;of Lock-Up Agreement executed by Intrusion Inc. and each of its executive officers and directors.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
4.6(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Registration Rights Agreement dated as of March&nbsp;25, 2004 by and among Intrusion Inc. and the persons and entities listed on Exhibit&nbsp;A thereto.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
5.1(3)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Opinion of Patton Boggs LLP, regarding the legality of the securities covered by this registration statement.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
10.1(1)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Securities Purchase Agreement dated as of March&nbsp;25, 2004, by and among Intrusion Inc. and the purchasers listed on Exhibit&nbsp;A thereto.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.1</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of KBA Group LLP.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.2</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of Ernst&nbsp;&amp; Young LLP.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.3(3)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Consent of Patton Boggs LLP (included in its opinion filed as Exhibit&nbsp;5.1).</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
24.1(2)</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2><BR>
Power of Attorney.</FONT></TD>
</TR>
</TABLE>
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<HR NOSHADE ALIGN="LEFT" WIDTH="120">
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>Incorporated
herein by reference to the Registrant's Current Report on Form&nbsp;8-K dated March&nbsp;25, 2004. </FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD><FONT SIZE=2>Previously
filed with the Registrant's Registration Statement on Form&nbsp;S-3 filed on April&nbsp;20, 2004. </FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(3)</FONT></DT><DD><FONT SIZE=2>Previously
filed with the Registrant's Amendment No.&nbsp;1 to Registration Statement filed on June&nbsp;14, 2004. </FONT></DD></DL>
<P ALIGN="CENTER"><FONT SIZE=2>II-4</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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NAME="page_jc1483_1_5"> </A> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="jc1483_signatures"> </A>
<A NAME="toc_jc1483_1"> </A>
<BR></FONT><FONT SIZE=2><B>SIGNATURES    <BR>    </B></FONT></P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of
the requirements for filing on Form&nbsp;S-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of
Richardson, State of Texas, on August&nbsp;6, 2004.

 </FONT>

</P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><BR>
INTRUSION INC.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT SIZE=2><BR>
By:</FONT></TD>
<TD WIDTH="54%"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>G. WARD PAXTON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> G. Ward Paxton<BR></FONT> <FONT SIZE=2><I>President, Chief Executive Officer and<BR>
Chairman of the Board</I></FONT></TD>
</TR>
</TABLE>
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<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated. </FONT></P>




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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="38%" ALIGN="CENTER"><FONT SIZE=1><B>Signature</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="38%" ALIGN="CENTER"><FONT SIZE=1><B>Title</B></FONT><HR NOSHADE></TH>
<TH WIDTH="2%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="19%" ALIGN="CENTER"><FONT SIZE=1><B>Date</B></FONT><HR NOSHADE></TH>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><BR><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>G. WARD PAXTON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> G. Ward Paxton</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
President, Chief Executive Officer and Chairman of the Board (principal executive officer)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>MICHAEL PAXTON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Michael Paxton</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Vice President and Chief Financial Officer and General Counsel (principal financial and accounting officer)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
*</FONT><HR NOSHADE><FONT SIZE=2> T. Joe Head</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Vice President of Strategic<BR>
Projects and Director</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
*</FONT><HR NOSHADE><FONT SIZE=2> J. Fred Bucy</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Director</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
*</FONT><HR NOSHADE><FONT SIZE=2> Donald M. Johnston</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Director</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
*</FONT><HR NOSHADE><FONT SIZE=2> James F. Gero</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Director</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>MICHAEL PAXTON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Michael Paxton<BR>
*Attorney-in-Fact</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="38%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
Director</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR><BR>&nbsp;</FONT></TD>
<TD WIDTH="19%" ALIGN="CENTER"><FONT SIZE=2><BR>
<BR>
August&nbsp;6, 2004</FONT></TD>
</TR>
</TABLE>

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<P ALIGN="CENTER"><FONT SIZE=2>II-5</FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<BR>
<P><br><A NAME="04DFW1483_1">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_bg1483_1">TABLE OF CONTENTS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bg1483_2">INTRUSION INC.</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_da1483_1">RISK FACTORS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_da1483_2">NOTE REGARDING FORWARD-LOOKING STATEMENTS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_dc1483_1">DESCRIPTION OF SECURITIES AND RELATED TRANSACTIONS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_de1483_1">PLAN OF DISTRIBUTION</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_de1483_2">USE OF PROCEEDS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_dg1483_1">SELLING STOCKHOLDERS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_dg1483_2">LEGAL MATTERS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_dg1483_3">EXPERTS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_dg1483_4">WHERE YOU CAN FIND ADDITIONAL INFORMATION</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_ja1483_1">PART II INFORMATION NOT REQUIRED IN PROSPECTUS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_jb1483_1">INDEX TO EXHIBITS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_jc1483_1">SIGNATURES</A></FONT><BR>
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</BODY>
</HTML>

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>a2141465zex-23_1.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#04DFW1483_2">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<!-- TOC_END -->
<P ALIGN="RIGHT"><FONT SIZE=2><B>Exhibit 23.1  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="ke1483_consent_of_independent___ke102333"> </A>
<A NAME="toc_ke1483_1"> </A>
<BR>

  </FONT>

<FONT SIZE=2><B>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

    <BR>    </B></FONT>

</P>

<P>


<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We consent to the reference to our firm under the caption "Experts" in the Registration Statement (Form&nbsp;S-3 No.&nbsp;333-114639)
and related Prospectus of Intrusion&nbsp;Inc. for the registration of 2,673,697 shares of its common stock and to the incorporation by reference therein of our report dated January&nbsp;30, 2004,
except for Note&nbsp;13, to which the date is March&nbsp;25, 2004, with respect to the consolidated financial statements and schedule of Intrusion&nbsp;Inc. as of and for the year ended
December&nbsp;31, 2003 included in its Annual Report (Form&nbsp;10-K/A) for the year ended December&nbsp;31, 2003, filed with the Securities and Exchange Commission.

</FONT>

</P>

<P><FONT SIZE=2>/s/
KBA Group LLP </FONT></P>

<P><FONT SIZE=2>


KBA GROUP LLP<BR>
Dallas, Texas<BR>
August 6, 2004

 </FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
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<FONT SIZE=2><A HREF="#toc_ke1483_1">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</A></FONT><BR>
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<TYPE>EX-23.2
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<FILENAME>a2141465zex-23_2.htm
<DESCRIPTION>EXHIBIT 23.2
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<P ALIGN="RIGHT"><FONT SIZE=2><B>Exhibit 23.2  </B></FONT></P>

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<BR></FONT><FONT SIZE=2><B>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM    <BR>    </B></FONT></P>

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<FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We consent to the reference to our firm under the caption "Experts" in the Registration Statement (Form&nbsp;S-3 No.&nbsp;333-114639)
and related Prospectus of Intrusion&nbsp;Inc. for the registration of 2,673,697 shares of its common stock and to the incorporation by reference therein of our report dated January&nbsp;28, 2003,
with respect to the consolidated financial statements and schedule of Intrusion&nbsp;Inc. as of December&nbsp;31, 2002 and for each of the two years in the period ended December&nbsp;31, 2002,
included in its Annual Report (Form&nbsp;10-K/A) for the year ended December&nbsp;31, 2003, filed with the Securities and Exchange Commission.

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<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/s/
Ernst &amp; Young LLP </FONT></P>

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Dallas, Texas<BR>
August 5, 2004

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