-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Uw1SNEwZ/tcFeRPBASCedpNbC23BBn2PU80Q6LbVlr6BQEZ89I2LqTPSuu67zwP7
 R5CV/zk9bQAxEOwzbSFAAg==

<SEC-DOCUMENT>0000912057-02-039029.txt : 20021018
<SEC-HEADER>0000912057-02-039029.hdr.sgml : 20021018
<ACCEPTANCE-DATETIME>20021018151830
ACCESSION NUMBER:		0000912057-02-039029
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20021017
ITEM INFORMATION:		Other events
FILED AS OF DATE:		20021018

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20191
		FILM NUMBER:		02792641

	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:	ODS NETWORKS INC
		DATE OF NAME CHANGE:	19970507

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OPTICAL DATA SYSTEMS INC
		DATE OF NAME CHANGE:	19950517

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTRUSION COM INC
		DATE OF NAME CHANGE:	20000601
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a2091550z8-k.htm
<DESCRIPTION>8-K
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#02DFW1834_1">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>

<!-- TOC_END -->
<HR NOSHADE>
<HR NOSHADE>
<P ALIGN="CENTER"><FONT SIZE=5><B>SECURITIES AND EXCHANGE COMMISSION<BR>  </B></FONT><FONT SIZE=2><B>WASHINGTON, D.C. 20549  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<BR>
<P ALIGN="CENTER"><FONT SIZE=5><B>FORM 8-K  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=3><B>CURRENT REPORT<BR>
Pursuant to<BR>
Section&nbsp;13 or 15(d) of the<BR>
Securities Exchange Act of 1934  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>Date of Report (Date of earliest event reported): October 17, 2002 </FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER"><FONT SIZE=5><B>INTRUSION INC.</B></FONT><HR NOSHADE><FONT SIZE=2>(Exact Name of Registrant as Specified in Its Charter)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="33%"><FONT SIZE=2><BR>
<BR></FONT>
</TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>Delaware</B></FONT><HR NOSHADE><FONT SIZE=2>(State or Other Jurisdiction<BR>
of Incorporation)</FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>000-20191</B></FONT><HR NOSHADE><FONT SIZE=2>(Commission<BR>
File Number)</FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>75-1911917</B></FONT><HR NOSHADE><FONT SIZE=2>(IRS&nbsp;Employer<BR>
Identification&nbsp;No.)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="33%"><FONT SIZE=2><BR>
<BR></FONT>
</TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2 ALIGN="CENTER"><FONT SIZE=2><B>1101 East Arapaho Road, Richardson, Texas</B></FONT><HR NOSHADE><FONT SIZE=2>(Address of Principal Executive Offices)</FONT></TD>
<TD WIDTH="33%" ALIGN="CENTER"><FONT SIZE=2><B>75081</B></FONT><HR NOSHADE><FONT SIZE=2>(Zip Code)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="33%"><FONT SIZE=2><BR>
<BR></FONT>
</TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER"><FONT SIZE=2><B>(972) 234-6400</B></FONT><HR NOSHADE><FONT SIZE=2>(Registrant's Telephone Number, Including Area Code)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="33%"><FONT SIZE=2><BR>
<BR></FONT>
</TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="33%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER"><FONT SIZE=2><B>NOT APPLICABLE</B></FONT><HR NOSHADE><FONT SIZE=2>(Former Name or Former Address, if Changed Since Last Report)</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->

<HR NOSHADE>
<HR NOSHADE>
<HR NOSHADE>
<!-- ZEQ.=1,SEQ=1,EFW="2091550",CP="INTRUSION INC",DN="1",CHK=109108,FOLIO='blank',FILE='DISK038:[02DFW4.02DFW1834]BA1834A.;5',USER='AHAWKIN',CD='17-OCT-2002;16:46' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<!-- TOC_END -->

<P><FONT SIZE=2><A
NAME="de1834_item_5._other_events."> </A>
<A NAME="toc_de1834_1"> </A>
<BR></FONT><FONT SIZE=2><B>Item 5. Other Events.    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On October&nbsp;17, 2002, Intrusion&nbsp;Inc. issued a press release announcing that its Board of Directors elected James P. Buchanan to join the Intrusion
Board. A copy of such press release is attached hereto as Exhibit&nbsp;99.1. </FONT></P>

<HR NOSHADE>
<!-- ZEQ.=1,SEQ=2,EFW="2091550",CP="INTRUSION INC",DN="1",CHK=556322,FOLIO='blank',FILE='DISK038:[02DFW4.02DFW1834]DE1834A.;2',USER='AHAWKIN',CD='17-OCT-2002;16:34' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<!-- TOC_END -->
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="jc1834_signatures"> </A>
<A NAME="toc_jc1834_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 Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned
hereunto duly authorized. </FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><B>INTRUSION INC.</B></FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
Dated: October 17, 2002</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>MICHAEL L. PAXTON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Michael L. Paxton<BR>
Chief Financial Officer</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->

<HR NOSHADE>
<!-- ZEQ.=1,SEQ=3,EFW="2091550",CP="INTRUSION INC",DN="1",CHK=1007945,FOLIO='blank',FILE='DISK038:[02DFW4.02DFW1834]JC1834A.;2',USER='AHAWKIN',CD='17-OCT-2002;16:36' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<!-- TOC_END -->
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="ka1834_exhibit_index"> </A>
<A NAME="toc_ka1834_1"> </A>
<BR></FONT><FONT SIZE=2><B>EXHIBIT INDEX    <BR>  </B></FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="76%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="9%" ALIGN="CENTER"><FONT SIZE=1><B>Exhibit No.</B></FONT><HR NOSHADE></TH>
<TH WIDTH="3%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="89%" ALIGN="LEFT"><FONT SIZE=1><B>Description of Exhibit<BR> </B></FONT><HR NOSHADE></TH>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="9%"><FONT SIZE=2>99.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="89%"><FONT SIZE=2>Text of press release of the registrant, dated October&nbsp;17, 2002, announcing that Intrusion&nbsp;Inc. Board of Directors elected James P. Buchanan to join the Intrusion Board.</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->

<HR NOSHADE>
<!-- ZEQ.=1,SEQ=4,EFW="2091550",CP="INTRUSION INC",DN="1",CHK=147165,FOLIO='blank',FILE='DISK038:[02DFW4.02DFW1834]KA1834A.;2',USER='AHAWKIN',CD='17-OCT-2002;16:37' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<BR>
<P><br><A NAME="02DFW1834_1">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_de1834_1">Item 5. Other Events.</A></FONT><BR>
</UL>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_jc1834_1">SIGNATURES</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_ka1834_1">EXHIBIT INDEX</A></FONT><BR>
<!-- SEQ=,FILE='QUICKLINK',USER=AHAWKIN,SEQ=,EFW="2091550",CP="INTRUSION INC",DN="1" -->
<!-- TOCEXISTFLAG -->
</BODY>
</HTML>

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>a2091550zex-99_1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#02DFW1834_2">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<!-- TOC_END -->
<P ALIGN="RIGHT"><FONT SIZE=2><A
NAME="km1834_exhibit_99.1"> </A>
<A NAME="toc_km1834_1"> </A>
<BR></FONT><FONT SIZE=2><B>Exhibit 99.1    <BR>  </B></FONT></P>

<P><FONT SIZE=2><B>FOR IMMEDIATE RELEASE  </B></FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="TOP">
<TD WIDTH="37%"><FONT SIZE=2><B><I>Investor and Media Contacts:</I></B></FONT><FONT SIZE=2><BR>
Charleigh Shayne<BR>
Director, Investor Relations<BR>
(972) 664-8061</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="60%"><FONT SIZE=2><BR>
Michael L. Paxton<BR>
Vice President, Chief Financial Officer<BR>
(972) 301-3658</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->

<P ALIGN="CENTER"><FONT SIZE=2><B>INTRUSION&nbsp;INC. ELECTS JAMES P. BUCHANAN TO BOARD OF DIRECTORS  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>Richardson, Texas&#151;October&nbsp;17, 2002&#151;</B></FONT><FONT SIZE=2>Intrusion&nbsp;Inc. (NASDAQ: INTZ),
("Intrusion") today announced that its Board of Directors elected James P. Buchanan to join the Intrusion Board. Mr.&nbsp;Buchanan spent 32&nbsp;years with EDS in various managerial
responsibilities and was a Corporate Vice President when he retired from EDS last year. Mr.&nbsp;Buchanan holds BA and MBA degrees from Texas A&amp;M University and has served on the Texas A&amp;M School of
Engineering Advisory Board. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"We
are very pleased to have someone with such a wide range of experience as Mr.&nbsp;Buchanan join our Board," stated G. Ward Paxton, President, Chairman and CEO of Intrusion. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mr.&nbsp;Buchanan
will also serve on the Audit and Compensation Committees. </FONT></P>

<P><FONT SIZE=2><B>About Intrusion&nbsp;Inc.  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Intrusion&nbsp;Inc. is a leading global provider of enterprise security solutions for the information-driven economy. Intrusion's suite of security products
help businesses protect critical information assets by quickly detecting, analyzing and responding to network- and host-based attacks. The Company's products include intrusion detection
systems, and modular, scalable "Secured by Check Point" VPN security appliances for Check Point Software Technologies' (NASDAQ: CHKP) market-leading VPN-1/FireWall-1. For more
information, please visit </FONT><FONT SIZE=2><I>www.intrusion.com</I></FONT><FONT SIZE=2>. </FONT></P>

<HR NOSHADE>
<!-- ZEQ.=1,SEQ=1,EFW="2091550",CP="INTRUSION INC",DN="2",CHK=1041714,FOLIO='blank',FILE='DISK038:[02DFW4.02DFW1834]KM1834A.;4',USER='DCUSHIN',CD='17-OCT-2002;17:42' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<BR>
<P><br><A NAME="02DFW1834_2">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_km1834_1">Exhibit 99.1</A></FONT><BR>
</UL>
<!-- SEQ=,FILE='QUICKLINK',USER=AHAWKIN,SEQ=,EFW="2091550",CP="INTRUSION INC",DN="2" -->
<!-- TOCEXISTFLAG -->
</BODY>
</HTML>

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
