TIPPINGPOINT PROTECTS CUSTOMERS’ NETWORKS FROM ZOTOB WORM

Digital Vaccine® Service Protects Latest Microsoft Vulnerability

Sydney, AUSTRALIA – 17 August, 2005 – TippingPoint, a division of 3Com (Nasdaq: COMS) and the leader in intrusion prevention, today announced that TippingPointTM Intrusion Prevention System (IPS) is again providing preemptive protection from the recently defined Zotob worm. Through its TippingPoint Digital Vaccine® service, distributed to customers on the same day Microsoft announced its vulnerability, the company had protection from the Zotob worm exploit.

The Zotob worm exploits the Plug and Play buffer overflow vulnerability as described in the Microsoft Security Bulletin (MS05-039) on 9 August, 2005. The worm opens a backdoor on the compromised system as well as starts an FTP server. The worm also disrupts the regular anti-virus update downloads to the infected system. The latest worm variant has the added capability of sending spam and infected emails.

TippingPoint protection of this vulnerability was in place for all its customers just a few hours after the issuance of the Microsoft Security Bulletin. Thus, its customers were protected prior to an exploit being developed, blocking the worm from disrupting the organisations and damaging networks and systems.

“With exploits and worms emerging within days of a Microsoft Bulletin release, the patch window is now almost non-existent for network administrators,” said Rohit Dhamankar, manager of TippingPoint’s Digital Vaccine security research team. “Fast evolving worms like Zotob can be extremely damaging once they infect any single system in a Windows network environment. TippingPoint IPS, with its total packet inspection, is one of the only solutions capable of combating the ever-increasing security threats our customers face.”

The TippingPoint Intrusion Prevention Systems provide Application Protection, Performance Protection and Infrastructure Protection at gigabit speeds through total packet inspection. Application Protection capabilities provide fast, accurate, reliable protection from internal and external cyber attacks. Through its Infrastructure Protection capabilities, the TippingPoint IPS protects VoIP infrastructure, routers, switches, DNS and other critical infrastructure from targeted attacks and traffic anomalies. TippingPoint’s Performance Protection capabilities enable customers to throttle non-mission critical applications that hijack valuable bandwidth and IT resources, thereby aligning network resources and business-critical application performance.

About TippingPoint, a division of 3Com TippingPoint, a division of 3Com, is the leading provider of network-based intrusion prevention systems. The TippingPoint IPS the most decorated in its industry. For a full list of awards, visit http://www.tippingpoint.com/products_certifications.html. Our innovative approach offers customers unmatched network-based security with unrivaled economics, 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 © 2005 3Com Corporation. 3Com, the 3Com logo and Digital Vaccine are registered trademarks and TippingPoint is a trademark of 3Com Corporation. All other company and product names may be trademarks of their respective holders.

For further information, please contact: Gerard Mansour, Red Agency, 02 9955 7877, gerard.mansour@redagency.com.au