Sourcefire RNA(TM) Delivers a Single Solution for Gaining Increased Visibility Into Both Physical and Virtual Systems; Improving

                       Protection and Management

LAS VEGAS--(BUSINESS WIRE)--Sept. 15, 2008--Open source innovator and SNORT(R) creator, Sourcefire, Inc. (Nasdaq: FIRE), a leader in Enterprise Threat Management, today at VMworld announced its vision for increasing security for virtual environments, enabling customers to leverage the Sourcefire 3D(TM) System as a single solution for protecting both physical and virtual environments.

Available immediately, the initial offering under this strategy, Sourcefire RNA(TM), can now identify both physical systems and new VMware-based virtual machines as they are added to the network. In addition, the company joined VMware's Technology Alliance Partnership (TAP) and VMsafe(TM) Partner programs to ensure that its leading security solutions support the latest virtualization developments and breakthroughs.

"In today's economy, Sourcefire understands that customers do not want to purchase yet another solution to help protect their virtual environments," said Martin Roesch, Founder & CTO of Sourcefire. "By providing enterprises with a single solution for increased visibility into both physical and virtual systems, RNA is enabling organizations to contain their IT costs without sacrificing the security of these new investments."

VMware Detection for Constraining VM Sprawl

RNA's new VMware detection capability, available now, enables customers to easily identify and monitor virtual machines, addressing the growing concern over VM sprawl. Organizations are now better equipped to increase the security of their virtual machines and ensure compliance with corporate IT policies.

"The deployment of virtual systems can be like the Wild West, with new machines being constantly added without regard for corporate policies. Enterprises need to have real-time visibility into these systems if they want to ensure that they are properly managed and protected," said Mike Montecillo, Security and Risk Management Analyst at Enterprise Management Associates. "By offering customers a single solution for providing visibility into both physical and virtual environments, Sourcefire RNA is increasing security, while also addressing critical management issues, like VM Sprawl."

Strategic VMware Partnership

As a VMsafe Partner Sourcefire will have access to VMware's VMsafe API, which enables third-party security products to gain visibility into the operation of a virtual machine. This will allow Sourcefire's solutions to identify and eliminate malware, such as viruses, trojans and key-loggers, that may otherwise not be visible.

About Sourcefire

Sourcefire, Inc. (Nasdaq: FIRE), Snort creator and open source innovator, is a world leader in Enterprise Threat Management (ETM) solutions. Sourcefire is transforming the way Global 2000 organizations and government agencies manage and minimize network security risks with its 3D Approach - Discover, Determine, Defend - to securing real networks. This ETM approach 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 40 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.

SOURCEFIRE(R), SNORT(R), the Sourcefire logo, the Snort and Pig logo, SECURITY FOR THE REAL WORLD(TM), SOURCEFIRE DEFENSE CENTER(TM), SOURCEFIRE 3D(TM), RNA(TM), DAEMONLOGGER(TM), CLAMAV(TM), SOURCEFIRE SOLUTIONS NETWORK(TM), and certain other trademarks and logos are trademarks or registered trademarks of Sourcefire, Inc. in the United States and other countries. Other company, product and service names may be trademarks or service marks of others.

Keyword Tags:

ids, intrusion detection, intrusion prevention, ips, network security, open source, snort, sourcefire, virtualization, vm sprawl, vmware, vmworld

    CONTACT: Media:
             Welz & Weisel Communications
             Tony Welz, 703-218-3555 x226
             Principal
             tony@w2comm.com
             or
             Investor Contact:
             Sourcefire, Inc.
             Tania Almond, 410-423-1919
             Investor Relations Officer
             tania.almond@sourcefire.com

    SOURCE: Sourcefire, Inc.