ISSX Internet Security Systems

Internet Security Systems, Inc. (ISS) (NASDAQ: ISSX), the worldwide leader in preemptive, enterprise security, today announced the intent to release financial results on Monday, July 31, 2006 for the quarterly period ended June 30, 2006. The release will be issued after the stock market close at approximately 4 p.m. Eastern Time (ET). A conference call led by Thomas Noonan, ISS chairman, president and chief executive officer, and Raghavan (Raj) Rajaji, ISS chief financial officer, will be held at 4:30 p.m. ET on July 31, 2006 following the announcement. Details of the conference call are as follows: -0- *T DATE/TIME: Monday, July 31, 2006 at 4:30 p.m. ET DIAL IN: Domestic 800-665-0430 International +1-913-312-1300 Pass code 6641537 A live Webcast of this conference call will be available at www.iss.net and the archived Webcast will remain accessible on the ISS Web site for one year. An audio rebroadcast of the teleconference will be available until August 1, 2006. REBROADCAST DIAL IN: Domestic 888-203-1112 International +1-719-457-0820 Pass code 6641537 *T Additional investor information can be accessed on the Internet Security Systems Web site or by contacting the Investor Relations department at +1-404-236-4053. About Internet Security Systems, Inc. Internet Security Systems, Inc. (ISS) is the trusted security advisor to thousands of the world's leading businesses and governments, providing preemptive protection for networks, desktops and servers. An established leader in security since 1994, ISS' integrated security platform automatically protects against both known and unknown threats, keeping networks up and running and shielding customers from online attacks before they impact business assets. ISS products and services are based on the proactive security intelligence of its X-Force(R) research and development team - the unequivocal world authority in vulnerability and threat research. ISS' product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the Internet Security Systems Web site at www.iss.net or call 800-776-2362. Internet Security Systems is a trademark and X-Force is a registered trademark of Internet Security Systems, Inc.