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Note 1. Description of Business | 12 Months Ended
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Dec. 31, 2016
Notes to Financial Statements |
Nature of Operations [Text Block] | 1. Description of Business We develop, market, and support a family of entity identification, data mining, regulated information compliance and data privacy protection. Our product families include: TraceCop for identity identification, Savant for data mining and advanced persistent threat detection and Compliance Commander for regulated information and data privacy protection. Intrusion’s products help protect critical information assets by quickly detecting, protecting, analyzing and reporting attacks or misuse of classified, private and regulated information for government and enterprise networks. We market and distribute our products through a direct sales force to end-users, distributors and numerous system integrators, managed service providers and value-added resellers. Our end-user customers include banks, credit unions, other financial institutions, U.S. federal government entities, foreign government entities, hospitals and other healthcare providers. Essentially, our end-users can be defined as end-users requiring network security solutions for protecting their mission critical data. We were organized in Texas in September 1983 and reincorporated in Delaware in October 1995. For more than 15 years, we provided local area networking equipment and were known as Optical Data Systems or ODS Networks. On April 17, 2000, we sold, or otherwise disposed of, our networking divisions, which included our Essential Communications division and our local area networking assets. On June 1, 2000, we changed our name from ODS Networks, Inc. to Intrusion.com, Inc., and our ticker symbol from ODSI to INTZ to reflect our focus on intrusion prevention and detection solutions, along with information compliance and data privacy protection products. On November 1, 2001, we changed our name from Intrusion.com, Inc. to Intrusion Inc. Our principal executive offices are located at 1101 East Arapaho Road, Suite 200, Richardson, Texas 75081, and our telephone number is (972) 234 - 6400. Our website URL is www.intrusion.com. References to the “Company”, “we”, “us”, “our”, “Intrusion” or “Intrusion Inc.” refer to Intrusion Inc. and its subsidiaries. Compliance Commander™ and TraceCop™ are registered trademarks of Intrusion Inc. As of December 31, 2016, we had cash and cash equivalents of approximately $64,000, down from approximately $102,000 as of December 31, 2015. We generated a net loss of $1,552,000 for the year ended December 31, 2016 compared to net loss of $1,249,000 for the year ended December 31, 2015. As of February 9, 2017, in addition to cash and cash equivalents , $515,000 of funding is available from a promissory note to borrow up to $3.4 million from G. Ward Paxton, the Company’s Chief Executive Officer. We are obligated to make payments of accrued dividends on all our outstanding shares of preferred stock that will reduce our available cash resources. Based on projections of growth in revenue and net income in the coming quarters, and the borrowings available previously mentioned, we believe that we will have sufficient cash resources to finance our operations and expected capital expenditures through March 31, 2018. We expect to fund our operations through anticipated Company profits, borrowings from the Company’s CEO, and possibly additional investments of private equity and debt, which, if we are able to obtain, will have the effect of diluting our existing common stockholders, perhaps significantly. Any equity or debt financings, if available at all, may be on terms which are not favorable to us and, in the case of equity financings, may result in dilution to our stockholders. If our operations do not generate positive cash flow in the upcoming year, or if we are not able to obtain additional debt or equity financing on terms and conditions acceptable to us, if at all, we may be unable to implement our business plan, fund our liquidity needs or even continue our operations.

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- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6003-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=64851502&loc=SL51803626-108592 + Details
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