Infonetics Research Points to TippingPoint as 2005 Revenue Leader in Network Intrusion Prevention Market Share

AUSTIN, Texas — April 6, 2006 — TippingPoint, a division of 3Com and the leader in intrusion prevention, today announced that Infonetics Research’s recent network security report ranked TippingPoint as the No. 1 market share leader for revenue in the network-based, in-line intrusion detection and intrusion prevention systems (IPS) market for calendar year 2005.

“TippingPoint is without question the most successful pure, in-line IPS solution that we track,” said Infonetics Research Principal Analyst Jeff Wilson. “We expect that TippingPoint will be a strong player in this space for a long time due to its focus on network performance, security precision, and ease-of-use.”

According to the report, “Network Security Appliances and Software Quarterly Worldwide Market Share and Forecasts, Q405,” the market for in-line, network-based intrusion prevention systems will grow significantly over the next three years. The compound annual growth rate for network-based IPS revenue is estimated at 25 percent between 2005 and 2009.

“We attribute our success and market leadership position to our customers,” said James Hamilton, president of TippingPoint, 3Com’s security division. “In part because so many enterprises entrust us daily with their security, IPS is now considered a mature technology, no longer just for early adopters. Our customers continue to be our partners in shaping and enhancing our technology.”

TippingPoint continues to pioneer the intrusion prevention systems market. Since launching the first IPS in 2002, TippingPoint has become the most decorated IPS. For a full list of awards, please visit: www.tippingpoint.com/products_certifications.html.

About TippingPoint, a division of 3Com
TippingPoint, a division of 3Com, is the leading provider of network-based intrusion prevention systems. The TippingPoint IPS is the most decorated in its industry. For a full list of awards, visit www.tippingpoint.com/products_certifications.html. Our innovative approach offers customers unmatched network-based security with ultra-high performance, scalability and reliability. TippingPoint is based in Austin, Texas, and can be contacted through its Web site at www.tippingpoint.com or by telephone at 1-888-TRUE-IPS.

About 3Com Corporation
3Com Corporation (NASDAQ: COMS) is a leading provider of secure, converged voice and data networking solutions for enterprises of all sizes. 3Com offers a broad line of innovative products backed by world class sales, service and support, which excel at delivering business value for its customers. Through its TippingPoint division, 3Com is the leading provider of network-based intrusion prevention systems that deliver in-depth application protection, infrastructure protection, and performance protection for corporate enterprises, government agencies, service providers and academic institutions. For further information, please visit www.3com.com, or the press site www.3com.com/pressbox.

Copyright © 2006 3Com Corporation. 3Com, the 3Com logo and Digital Vaccine are registered trademarks and TippingPoint is a trademark of 3Com Corporation or its subsidiaries. All other company and product names may be trademarks of their respective holders.

Safe Harbor
This press release contains forward-looking statements within the meaning of the federal securities laws, including statements regarding the future performance of our TippingPoint Division and security business. These statements are subject to risks and uncertainties that could cause actual results and events to differ materially. For a discussion of the risks and uncertainties associated with our business, please refer to our most recent filings with the Securities and Exchange Commission, including our Annual Report on Form 10-K for the fiscal year ended June 3, 2005.

This press release was accurate at the time it was issued but may not reflect 3Com’s current strategy or product offering.

Contact Information

John Vincenzo

Corporate Communications, Public and Analyst Relations

3Com Corporation

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