Intrusion Inc. Announces Second Quarter 2002 Results on Thursday, July 18 2002

RICHARDSON, Texas–(BUSINESS WIRE)–July 3, 2002–

Investor Conference Call, Webcast and Replay Accessible After Financial Results Released

Intrusion Inc. (Nasdaq:INTZ) will announce second quarter 2002 financial results after the market close on Thursday, July 18, 2002. The full text of the release will be available over First Call and by fax after the wire services have published the press release. The release will also be available on the company’s Web site at www.intrusion.com. Intrusion management will review the Company’s financial and operational progress for the quarter during a conference call later that day at 4:00 P.M., CST.

Interested investors can access the call at 1-800-399-2043 (outside the United States, please dial 1-706-634-5518) at 4:00 P.M., CST. For those unable to participate in the live conference call, a replay will be accessible beginning July 18 at 7:00 P.M., CST until August 1, 2002 by calling 1-800-642-1687 (if outside the United States, 1-706-645-9291). At the replay prompt, enter conference identification number 4602444. In addition, a live and archived audio webcast of the conference call will be available at www.intrusion.com. Please contact Investor Relations at 972-664-8061 if you have questions regarding the conference call procedures.

About Intrusion Inc.

Intrusion 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 and vulnerability assessment 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 www.intrusion.com.