Arbor Networks Attains NIAP, Common Criteria Certification; Arbor Peakflow X Meets Rigorous Federal Government Security Requirements.

LEXINGTON, Mass. -- Arbor Networks(R), a leader in network security, today announced that it was awarded Common Criteria Evaluation Assurance Level (EAL) 2. This certification, issued by the National Information Assurance Partnership (NIAP), ensures that Arbor Peakflow X, the internal intrusion prevention (IPS) appliance for enterprise networks, meets a strict set of pre-defined government security requirements.

"With increased concerns around security and terrorism, government agencies are requiring network security companies to achieve NIAP certification," said Tina Stewart, vice president of marketing, Arbor Networks. "Arbor Networks is committed to providing our government customers with superior network security solutions. This certification combined with the numerous awards Arbor has received throughout 2005, provides our customers with further assurance that we are delivering on the value we promise."

Achieving this certification required Peakflow X 3.1.4 to undergo a lengthy and meticulous testing and analysis by an independent team of auditors to validate that it can discover threats and protect systems at the stringent levels that the government demands.

In addition to the Common Criteria certification, Arbor Networks has been outperforming in the network security market this year and has recently been honored with several prestigious business and technology awards. These include:

--InfoWorld 100 Award - Arbor Networks' customer, American Water, was honored with the InfoWorld 100 Award for its enterprise-wide deployment of Arbor Peakflow X

--Inc. 500 - Arbor Networks was named the ninth fastest-growing private company in the United States with the Inc. 500 Award for three-year growth of over 4,651%.

--Deloitte Fast 50 Rising Star Award - Arbor received the Technology Fast 50 Rising Star Award from Deloitte & Touche LLP for being a fast-growth technology company that has shown strength, vision and temerity to succeed.

--Red Herring Top 10 to Watch - Arbor Networks was named one of the "10 Private Companies to Watch" by Red Herring Magazine.

--MITX Technology Award - Arbor Networks' Peakflow was selected as the winner in the "Best Network Infrastructure-Systems Management Application" category at the MITX Technology Awards.

NIAP is a U.S. Government initiative originated to meet the security testing needs of both information technology (IT) consumers and producers. Its Common Criteria is recognized as a key quality requirement by governments and customers worldwide and is an important consideration for many government agency security evaluations. This certification provides users with a set of requirements for comparing security functions of IT products and systems so that they can make informed purchases.

Customers can view Arbor Networks' Common Criteria evaluation status at http://www.niap.nist.gov/cc-scheme/st/ST_VID4045.html

ABOUT ARBOR NETWORKS

Arbor Networks ensures the security and operational integrity of the world's most critical networks. Arbor's solutions are based on the proven Arbor Peakflow platform, intelligent technology for network-wide data collection, analysis, anomaly detection, and threat mitigation. Arbor Peakflow provides real-time views of network activity enabling organizations to instantly protect against worms, DDoS attacks, insider misuse, and traffic and routing instability, as well as segment and harden networks from future threats. Arbor Peakflow successfully prevents costly downtime, network cleanup, and loss of customer confidence. Arbor Networks is headquartered in Lexington, MA, with a research and development office in Ann Arbor, MI and overseas headquarters in London and Beijing.