PRESS RELEASE

Columbia, Md. – September 7, 2010 – Sourcefire, Inc. (Nasdaq:FIRE), the creator of Snort' and a leader in intelligent cybersecurity solutions, today announced the release of its new integration with QualysGuard'. To support increased product collaboration, Sourcefire' is delivering a new Qualys' Connector, which associates threats detected by the Sourcefire IPSTM (Intrusion Prevention System) with host vulnerabilities found by QualysGuard Vulnerability Management (VM). Working in tandem, the Qualys Connector delivers additional network vulnerability context and enhanced threat impact analysis for adaptable protection.

According to a recent report by Gartner, “Context-aware and adaptive security will be the only way to securely support the IT infrastructures emerging during the next 10 years.” Moreover, “Context-aware security is the use of supplemental information to improve security decisions at the time the decision is made, resulting in more-accurate security decisions capable of supporting more-dynamic business and IT environments.”1

“As organizations deal with the constant stream of attacks and alerts, they are continually looking for ways to prioritize the critical threats that require immediate attention,” said Martin Roesch, CTO and founder of Sourcefire. “The combination of Sourcefire and QualysGuard enables organizations to further reduce the number of actionable threats by correlating real-time network intelligence with active vulnerability scanning data. The Sourcefire IPS leverages this insight to adapt and customize its protection to a user’s network.”

The Qualys Connector leverages the Sourcefire Defense Center' to automatically correlate threats detected by the Sourcefire IPS with host vulnerabilities detected by QualysGuard. The combined solutions deliver increased contextual data – helping security analysts prioritize intrusion alerts. The Sourcefire IPS can quickly determine if a host is actually vulnerable to a given exploit and adapt its protection accordingly, saving valuable analysis time. The increased visibility into system vulnerabilities allows the Sourcefire IPS to reduce the number of intrusion events at the sensor level to intelligently self tune its protection and increases the precision of its alerting and blocking.

“With the increased sophistication and frequency of attacks, customers need more effective solutions to respond quickly and protect the network from these threats,” said Wolfgang Kandek, CTO at Qualys. “Sourcefire has built its reputation on delivering intelligent and adaptive security solutions, and the new Qualys Connector further illustrates the importance of accurate vulnerability information, which helps increase the effectiveness of protection efforts.”

For more information, join Sourcefire and Qualys for a webcast on “Mitigating Network Security Risks Through Shared Vulnerability and Threat Intelligence” on Tuesday September 14 at 8am PDT. Register to listen to the webcast live or to receive a recording of the session at http://events.qualys.com/content/shared_vuln_intelligence/.

About Sourcefire Sourcefire, Inc. (Nasdaq:FIRE), is a world leader in intelligent cybersecurity solutions. Sourcefire is transforming the way Global 2000 organizations and government agencies manage and minimize network security risks. Sourcefire’s IPS and Real-time Adaptive Security solution equips customers with an efficient and effective layered security defense – protecting network assets before, during and after an attack. Through the years, Sourcefire has been consistently recognized for its innovation and industry leadership by customers, media and industry analysts alike – with more than 50 awards and accolades. Today, the names Sourcefire and founder Martin Roesch have grown synonymous with innovation and network security intelligence. For more information about Sourcefire, please visit http://www.sourcefire.com.