Press Release - For Immediate Release

Industry Acquisition Extends Market Leadership for IronPort Systems

SAN BRUNO, Calif. - July 12, 2006 -- IronPort® Systems Inc., the leader in gateway security, announced today that recent industry consolidation helps extends IronPort's leadership in the gateway security market. In response to the Secure Computing (Nasdaq: SCUR) announcement regarding the acquisition of CipherTrust, Scott Weiss, IronPort CEO and Founder commented:

"Today's announcement validates our position as the leading vendor with a single focus on providing gateway security. The acquisition provides us a great opportunity to extend our lead in the gateway security market and also significantly widens the gap between IronPort, the leader, and everyone else," said Scott Weiss, IronPort CEO and Founder. "With historically strong growth and proven track record—bookings for 2005 of approximately $74M and approximately $25M for Q2 2005—IronPort can easily claim market leadership."

The best evidence of IronPort's leadership is the traditional network security and technology companies that have chosen IronPort to protect their own networks. IronPort protects Cisco, Juniper, Intel, and Dell. The company also protects the US Army and Navy - in total, IronPort protects over 3.5 million US Federal mailboxes. IronPort supports the largest ISPs and over 20% of the Fortune 500. IronPort has lead the industry in stopping messaging threats for enterprises the world over. IronPort was first to develop important patent-pending security technologies like Reputation Filtering and Virus Outbreak Filtering.

"IronPort recently extended this leadership to the web providing the industry's fastest web security gateway. Working together, the web security and email security gateways from IronPort stop spam, viruses, spyware, phishing and malware of all types," continued Weiss. "IronPort is the only enterprise vendor that can make this claim."

About IronPort Systems

IronPort Systems is the leading gateway security provider for organizations ranging from small businesses to the Global 2000. The company has developed a family of security gateway appliances, including the IronPort C-Series email security appliance, and the IronPort S-Series Web Security Appliance. All IronPort application-specific security gateway appliances offer breakthrough performance, and utilize SenderBase®, the world's largest email and Web threat detection network and database. For more information on IronPort products and services, visit: http://www.ironport.com/.