ATLANTA -- Internet Security Systems, Inc. (ISS) (Nasdaq: ISSX - News) released its new Proventia® Desktop product with integrated Virus Prevention System (VPS) technology. Proventia Desktop provides preemptive, enterprise-class protection against today's most damaging Internet threats, including spyware, network worms, viruses and other malware in addition to hacking attempts. As a key component of the ISS Proventia Enterprise Security Platform's (ESP) multi-layered approach to cyber security, Proventia Desktop offers comprehensive desktop protection to stop threats before they can impact business.

Proventia Desktop was designed to meet the needs of ISS' enterprise customers and addresses the needs of mobile workforces, where assets routinely travel outside of the organization's network security umbrella and are vulnerable to all forms of attacks. The product integrates all of the features of ISS' market-leading RealSecure® Desktop product, such as personal firewall protection, intrusion prevention, VPN security and granular application control. With the addition of VPS, Buffer Overflow Exploit Prevention (BOEP), improved application control and anti-spyware measures, Proventia Desktop is the new standard for enterprise desktop security.

VPS uses a patent-pending behavioral analysis method to stop known and unknown viruses, Trojans and worms. Complementary to traditional, signature- based antivirus technology, VPS goes beyond the monitoring of known malcode signatures by identifying viral and unhealthy application behavior to detect and block malicious code. This means that Proventia Desktop can stop unknown threats and protect the desktop from information theft, unwanted resource usage and file modification or deletion -- without time-sensitive signature updates.

"Here at AV-Test.org, we test anti-virus systems to determine how well they perform under today's threat load," said Andreas Marx, CEO of AV-Test GmbH. "Our tests have shown that anti-virus vendor reaction times can range anywhere from two hours to 16 hours before a signature patch is released. In addition, the number of virus signatures increased 25 percent in just the first nine months of 2004, and the average size of signature files increased more than 24 percent. Moving forward, if organizations are to effectively target and stop tomorrow's threats, anti-virus vendors have to be more proactive in their detection methods, which means eliminating the need for time sensitive and large signature file updates."

Internet Security Systems Inc.