ATLANTA--(BUSINESS WIRE)--Jan. 23, 2006--Internet Security Systems (ISS) (NASDAQ: ISSX) today announced that the company has been awarded the 2005 Frost & Sullivan Award for Market Leadership in Vulnerability Assessment, based on the market performance of its patented Internet Scanner(R) product. The Frost & Sullivan Award for Market Leadership is presented each year to the company that has demonstrated leadership in a particular industry through the development, refinement and implementation of a successful market strategy. According to Frost & Sullivan, ISS received this honor for continuing to lead the vulnerability assessment industry despite intensified competition and an increasingly complex market landscape.

"As a founder of the vulnerability assessment industry, ISS is distinguished by being one of only a few vendors that has maintained superior market share since the industry's inception," said Loren Rudd, Frost & Sullivan Research Analyst. "Despite steady increases in both industry revenues and competition, ISS maintains revenues that are more than one-third greater than their closest challenger."

"Having invented vulnerability assessment technology in 1994, we pride ourselves in remaining the leader in the space after more than 10 years," said Greg Adams, vice president of product management at ISS. "As we continue to grow our business and develop new technologies, we remain committed to Internet Scanner as the technology on which our company was built, most recently complementing it with our new vulnerability management service."

ISS' Internet Scanner minimizes an organization's security risks by identifying the security holes, or vulnerabilities, in a network so that they can be repaired before an attack occurs. By finding the weak spots in a network, Internet Scanner helps secure companies' critical assets and prevent the compromise of crucial business information. As part of ISS' Proventia(R) product line, Internet Scanner plays a key role in an integrated security platform that keeps customers ahead of the next Internet threat, maintaining system and network integrity while helping to avoid costly and embarrassing security breaches.

"The rich features of ISS' Internet Scanner, and its integration with ISS' Proventia Management SiteProtector(TM), have been key to our success," said Jon Allen, Information Security Officer of Baylor University. "ISS' Virtual Patch(TM) protection has enabled Baylor University to move to a proactive model when dealing with system vulnerabilities, putting protection in our hands rather than operating in a reactionary mode and waiting for patches from OS and application vendors."

According to Frost & Sullivan, ISS' vulnerability assessment offering is strengthened by the ISS X-Force(R) research and development team and the company's new vulnerability management service. Through the unique vulnerability research conducted by X-Force 24/7/365, ISS is able to offer truly preemptive security, providing customers with protection for security flaws before they can be exploited by hackers. For companies that don't have the in-house resources needed to manage Internet Scanner, ISS' new vulnerability management service automates the vulnerability management lifecycle by continually assessing IT vulnerabilities and tracking each issue until it is fully resolved through the use of powerful, integrated workflow and case management tools.

For additional information on Internet Scanner, please visit: http://www.iss.net/products_services/enterprise_protection/ vulnerability_assessment/scanner_internet.php (Due to its length, this URL may need to be copied/pasted into your Internet browser's address field. Remove the extra space if one exists.)

About Internet Security Systems, Inc.

Internet Security Systems, Inc. (ISS) is the trusted expert to global enterprises and world governments, providing products and services that protect against Internet threats. An established world leader in security since 1994, ISS delivers proven cost efficiencies and reduces regulatory and business risk across the enterprise. ISS products and services are based on the proactive security intelligence conducted by ISS' X-Force research and development team - the unequivocal world authority in vulnerability and threat research. Headquartered in Atlanta, Internet Security Systems has additional operations throughout the Americas, Asia, Australia, Europe and the Middle East. For more information, visit the Internet Security Systems Web site at www.iss.net or call 800-776-2362.

Internet Security Systems, Virtual Patch and SiteProtector are trademarks, and Internet Scanner, Proventia and X-Force are registered trademarks, of Internet Security Systems, Inc. All other companies and products mentioned are trademarks and property of their respective owners.

CONTACT: Internet Security Systems, Inc., Atlanta
Angela Frechette, 404-236-3197
afrechette@iss.net
or
McGrath/Power Public Relations
Roger Fortier, 408-727-0351
rogerf@mcgrathpower.com

SOURCE: Internet Security Systems, Inc.