Editing Trend Micro (section)

===2000s===
In 2004, founding chief executive officer Steve Chang decided to split the responsibilities of CEO and chairman of the company.<ref name="International Directory of Company Histories"/> Company co-founder Eva Chen succeeded Chang as chief executive officer of Trend Micro in January 2005.<ref name="South China Morning Post"/> Chen has been the company's chief technology officer since 1996 and before that executive vice president since the company's founding in October 1989.<ref name="South China Morning Post"/> Chang retained his position as company chairman.<ref name="South China Morning Post"/> In May, Trend Micro acquired US-based [[Spyware|antispyware]] company InterMute for $15 million.<ref name=bostonglobe>{{cite news |title=Japanese Firm to Buy Braintree's Intermute for $1.5M |first=Hiawatha |last=Bray |date=11 May 2005 |work=The Boston Globe}}</ref> Trend Micro had fully integrated InterMute's [[SpySubtract]] antispyware program into its antispyware product offerings by the end of that year.<ref name=bostonglobe/><ref>{{cite news |title=Trend Micro steps up fight against hackers |first=Jack |last=Kapica |date=31 October 2005 |work=The Globe and Mail}}</ref> 

In June 2005 Trend Micro acquired Kelkea, a US-based developer of antispam software.<ref name="Cnet Kelkea">{{cite news |title=Trend Micro tackles spam with Kelkea buy; The antivirus company's purchase of Kelkea beefs up its spam credentials and sets it on the road to tackling phishing. |date=14 June 2005 |publisher=CNET}}</ref> Kelkea developed [[Mail Abuse Prevention System]] (MAPS) and IP filtering software that allowed [[internet service providers]] to block spam and [[phishing]] scams.<ref>{{cite news |title=News bits |date=20 June 2005 |work=Network World}}</ref> Kelkea chief executive officer Dave Rand was retained by Trend Micro as its chief technologist for content security.<ref name="Cnet Kelkea"/>

In March 2007, Trend Micro acquired [[freeware]] antispyware program [[HijackThis]] from its creator Merijn Bellekom for an undisclosed sum.<ref>{{cite news |title=Free HijackThis Tool Acquired by Trend Micro |first=Neil J. |last=Rubenking |date=13 March 2007 |work=PC Magazine}}</ref><ref>{{cite news |title=Trend Micro acquires HijackThis antispyware; HijackThis to remain as freeware for public use |first=Ellen |last=Messmer |date=14 March 2007 |work=Network World Fusion}}</ref> Trend Micro delisted its [[American depositary receipt|depository shares]] from the NASDAQ stock exchange in May.<ref>{{cite press release |title=Trend Micro Notice Regarding Completion of Delisting of Its ADRs from NASDAQ |date=1 June 2007 |agency=PR Newswire Asia}}</ref> Later that year, in October, Trend Micro acquired US-based [[data loss prevention software]] developer Provilla.<ref name="Network World Provilla">{{cite news |url=https://www.networkworld.com/article/2287662/trend-micro-buys-data-leak-specialist-provilla.html |title=Trend Micro buys data-leak specialist Provilla |first=Ellen |last=Messmer |date=25 October 2007 |work=Network World Fusion}}</ref> Provilla was the creator of LeakProof, software that allowed companies to block the transmission of sensitive data and warn security managers about transmission attempts.<ref name="Network World Provilla"/>

Trend Micro acquired Identum in February 2008 for an undisclosed sum.<ref name="Bristol Evening Post">{{cite news |title=Data spy-beater sold to us rival |date=28 February 2008 |work=Bristol Evening Post}}</ref> Identum, which was founded in and later spun-off from the [[University of Bristol]] [[cryptography]] department, developed [[ID-based encryption|ID-based email encryption]] software. Identum's chairman was serial entrepreneur, Steve Purdham.<ref name="Bristol Evening Post"/> The two companies were originally in talks for Trend Micro to license Identum's technology, but Trend Micro later decided to purchase the firm outright.<ref name="Bristol Evening Post"/> Identum was renamed Trend Micro (Bristol) and its encryption technology was integrated into existing Trend Micro products.<ref name="Wireless News">{{cite press release |title=Trend Micro Purchases Identum for Identity-Based Email Encryption |date=1 March 2008 |work=Wireless News}}</ref> Existing Identum products were continued but sold under the Trend Micro brand.<ref name="Wireless News"/> Also that year, Trend Micro sued Barracuda Networks for the latter's distribution of [[ClamAV]] as part of a security package.<ref name="PC Magazine Lawsuit">{{cite news |title=Update: Barracuda Takes on Trend Micro over ClamAV Patents |date=29 January 2008 |work=PC Magazine |url=https://www.pcmag.com/article2/0,2817,2254005,00.asp |access-date=15 March 2015}}</ref> Trend Micro claimed that Barracuda's use of ClamAV infringed on a software patent owned by Trend Micro for filtering viruses on an Internet gateway.<ref name="PC Magazine Lawsuit"/>  On 19 May 2011, the U.S. Patent and Trademark Office issued a Final Rejection<ref>{{cite web | url=http://www.groklaw.net/pdf3/90011022-18.pdf | title=Ex Parte Reexamination | publisher=U.S. Patent and Trademark Office | date=19 May 2011 | access-date=4 October 2015}}</ref> in the reexamination of Trend Micro's U.S. patent 5,623,600.<ref>{{cite web | url=http://www.groklaw.net/article.php?story=20110613091958268 | title=Anatomy of a Dying Patent - The Reexamination of Trend Micro's '600 Patent | publisher=Groklaw.net | date=13 June 2011 | access-date=4 October 2015}}</ref>

In April 2009, Trend Micro acquired [[Ottawa]], Canada–based Third Brigade for an undisclosed sum.<ref name="Network World Third Brigade">{{cite news |title=UPDATE: Trend Micro acquiring Third Brigade as part of data-center security strategy |first=Ellen |last=Messmer |date=29 April 2009 |work=Network World |url=https://www.networkworld.com/article/780233/lan-wan-update-trend-micro-acquiring-third-brigade-as-part-of-data-center-security-strategy.html |access-date=15 March 2015}}</ref> Third Brigade developed host-based intrusion prevention and [[firewall (computing)|firewall]] software that had been used by Trend Micro in its Trend OfficeScan anti-malware suite for two years prior to acquiring Third Brigade.<ref name="Network World Third Brigade"/> Third Brigade was reincorporated as Trend Micro Canada Technologies.<ref>{{cite news |title=Trend Micro buys Third Brigade, gains Canadian presence |first=Rafael |last=Ruffolo |date=29 April 2009 |work=IT World Canada |url=http://www.itworldcanada.com/article/trend-micro-buys-third-brigade-gains-canadian-presence/11437 |access-date=15 March 2015}}</ref>