SOURCEFIRE NAMED BEST INTRUSION SOLUTION AWARD FINALIST BY SC MAGAZINE

Industry Leading Technology Continues to Garner Industry Recognition

Columbia, Md., April 22, 2003 - Sourcefire, Inc., a leader in protecting enterprises and government organizations against the threat of network attacks and misuse, today announced that SC Magazine has named Sourcefire Network Sensor (NS) 3000 a 2003 SC Awards Council Finalist in the Best Intrusion Solution category. Sourcefire has been shipping Sourcefire NS3000 for 6 months and already has a number of customers in both government and commercial using the product in heavy production environments. SC Award winners will be announced at a ceremony on April 29, 2003 at the Hilton Hotel in Park Lane, London.

“ Sourcefire is dedicated to providing our customers with the industry's most precise detection, coupled with unmatched flexibility and manageability, and this recognition by one of the industry's most respected publications reaffirms our approach,” said Tom McDonough, President and COO of Sourcefire. “Our customers are looking for a solution that makes their jobs easier and enables them to process the huge amounts of data that typical intrusion detection systems generate. Sourcefire Intrusion Management System enables them to customize the solution to greatly reduce false positives and proactively protect themselves from malicious attacks.”

Sourcefire NS3000 is optimized for monitoring traffic and alerting to threats on gigabit speed networks and is part of the Sourcefire Intrusion Management System (IMS), the industry's only fully customizable solution, allowing customers to tune every aspect for their specific environment. This customization ensures the most effective network monitoring and threat management available today. Sourcefire Network Sensors are delivered as complete appliances with the hardware, software and operating system optimized for peak performance. They enhance the industry leading Snort™ technology, adding an easy to use interface, optimized hardware, powerful data analysis, policy management and forensic capabilities, as well as a full staff of professional services and 24x7 support.

Sourcefire Intrusion Management System (IMS) is the only intrusion detection solution to incorporate a management console with an integrated high performance database for increased event correlation and data management capabilities, enabling it to provide users with superior protection from malicious attacks. It is the industry's first complete intrusion detection system and is comprised of Sourcefire Network Sensors and Management Console - delivering all of the capabilities needed to proactively defend against intruders.

About Sourcefire, Inc.
Sourcefire, Inc. is a network security company protecting commercial enterprises and government organizations against the threat of network attacks and misuse. The company was founded in 2001 by the original creators of open source Snort™, the most widely deployed intrusion detection technology in the industry. Snort™ forms the foundation for the Sourcefire Intrusion Management System (IMS). The company provides customers with increased manageability, flexibility and protection by combining Snort™’s leading intrusion detection with sophisticated proprietary technologies, professional data analysis and management tools, along with best practices from respected security industry experts. Sourcefire is a privately held company headquartered in Columbia, MD. For more information about Sourcefire, please visit www.sourcefire.com.