For Immediate Release Contact: Jeremy Milner
401-862-9422
jeremy@jeremymilner.com

Jill Burnie
617-375-4217
jill.burnie@morgankeegan.com
...........................................................................................................

TREND MICRO TO ACQUIRE INTERMUTE

Trend Micro augments award-winning solutions with addition of innovative anti-spyware experts to provide data privacy protection

Tokyo, Japan (10 May 2005) – Trend Micro Inc. (TSE: 4704, NASDAQ: TMIC), a leader in network antivirus and Internet content security software and services, announced today it has entered into an agreement to acquire InterMute, Inc., a leading developer of anti-spyware products, by Trend Micro’s United States subsidiary, subject to completion of due diligence. InterMute’s technology will further enhance Trend Micro’s anti-spyware solutions for business customers and consumers.

Spyware is a recognized, increasing security threat. According to IDC, 67% of all computers have some form of spyware on them, and in some cases, infected computers are host to hundreds of spyware programs (source: IDC Market Analysis, “Worldwide Spyware 2004-2008 Forecast and Analysis: Security and System Management Sharing Nightmares”, November 2004). Additionally, the challenges of dealing with spyware are becoming more complex. Customers need an effective solution to deal with spyware that they want removed from their systems but require the flexibility to choose how to

handle “grayware”, those types of spyware that they may or may not want to remove such as adware. InterMute’s expertise and technology will further Trend Micro’s abilities to help customers in both of these areas.

“Trend Micro continues to be wholly focused on providing our customers with security solutions that offer advanced protection against unpredictable, malicious threats,” said Eva Chen, CEO and co-founder of Trend Micro. “Spyware continues to evolve and cause concern and damage, but not all spyware can be handled the way viruses and worms are. Customers need effective solutions to remove spyware, but must also be given the flexibility on how to manage it. The acquisition of InterMute further strengthens our ability to execute upon our anti-spyware strategy and their technology and products are entirely complementary to our own. We expect to deliver combined solutions to market quickly.”

“Since 1999, we have seen the security business change form and the damaging effects of spyware increase dramatically,” said Ed English, CEO of InterMute. “This is an exciting time to pursue such a venture with Trend Micro. Given the complexity of threats like spyware and our customers’ needs for an integrated, comprehensive approach to dealing with it, I can think of no better response than to join forces and deliver a more advanced, complete solution for our customers.”

Trend Micro has confirmed its intention to offer InterMute’s stand-alone anti-spyware products under the Trend Micro brand. Additionally, the company plans to integrate InterMute’s anti-spyware capabilities into its enterprise, small and medium business, and consumer solutions.

Teleconference for Media Outlets, Analysts
To hear further information regarding this announcement, Trend Micro is holding a telephone conference today, 10 May, at 8:30 am PST / 11:30 am EST / 4:30 pm GMT / 5:30 pm CET.

Those wishing to attend should register at: www.trendmicro.com/intermute/telecon

For those unable to join the call, please contact Trend Micro directly to obtain further information. The recording of the call will later be made available on the Trend Micro website.

About Trend Micro, Inc.
Trend Micro, Inc. is a leader in network antivirus and Internet content security software and services. The Tokyo-based corporation has business units worldwide. Trend Micro products are sold through corporate and value-added resellers and managed service providers. For additional information and evaluation copies of all Trend Micro products, visit our Web site, http://www.trendmicro.com/intermute/telecon



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