Commtouch Selected by AhnLab, Korea's Largest Security Vendor

 and a Key Anti-Virus Provider Throughout Asia; AhnLab Integrates Commtouch  Technology for Anti-Spam and Zero-Hour Virus Protection into Its Core Product  Line  MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--Dec. 14, 2005 Commtouch(R) (NASDAQ:CTCH), the developer of ground-breaking RPD(TM) technology for real time anti-spam and Zero-Hour(TM) virus protection, announced today that its technology was selected by security service provider AhnLab Inc. Commtouch's technology for anti-spam and Zero-Hour virus protection is now available to all AhnLab customers, including over 14,000 corporations throughout Asia.  AhnLab is one of Asia's leading providers of anti-virus and content security software and services. It has received a Virus Bulletin "100 Percent Award," Anti-Virus Checkmark Level 1 and 2 citations and the Trojan Checkmark. As the ninth-largest anti-virus software company in the world, AhnLab pioneers a comprehensive approach to integrated information technology security. AhnLab represents Asia's dominant force in anti-virus solutions, holding 65 percent of the anti-virus software market share in Korea.  Powerful Value Proposition to AhnLab Users: Unmatched Anti-Spam and Zero-Hour AV Performance  Ike Kim, VP & CTO of AhnLab, commented: "We chose Commtouch as our technology partner for email security in all our markets after ascertaining that the company offers world-leading technologies for both anti-spam and the Zero-Hour virus protection. Our rigorous testing confirmed that Commtouch's Zero-Hour virus protection is superior to any other proactive approach. The company's anti-spam technology -- which relies on outbreak detection rather than on content analysis -- blocks Asian spam better than any other method."  Entrenching Commtouch in the Asian Email Security Market  "We are exceptionally pleased with this agreement, which is an important step in establishing Commtouch as the leading email security technology provider throughout Asia," said Ronni Zehavi, Vice President of International Business Development. "Our success in Asia so far is largely due to our unique network-based approach, which is language independent and globally robust. In Asia as in other areas, Commtouch collaborates closely with key partners -- providing powerful technology solutions that enable our partners to reliably protect their customer base.  "Through our continuing focus on this globally successful OEM business model, we intend to launch additional collaborative agreements with partners in the Asia Pacific region. This agreement, and the ones to follow, should have a positive impact on the financial results of 2006."  Further product information is available at:  About AhnLab  AhnLab, Inc. (KOSDAQ:#053800) is an industry-leading security solutions and services provider, headquartered in Seoul, Korea. Innovating the information security world since 1988, AhnLab's products and services have always been designed to meet the needs of enterprises and consumers alike. En route to becoming the largest security provider in Korea, AhnLab established its V3 product family as the industry-standard for information protection retaining nearly two-thirds of the Korean Anti-virus software market. Cutting-edging technologies such as mobile device protection, online-driven consumer security, and enterprise consulting services have also enabled AhnLab to grow at an incredible pace. Today, AhnLab reaches far beyond its Korean headquarters, with sales and research operations in more than 10 countries. More News and information are available at  About Commtouch  Commtouch Software Ltd. (NASDAQ:CTCH) is dedicated to protecting and preserving the integrity of the world's most important communications tool -- email. Commtouch has 14 years of experience developing messaging software, and is a global developer and provider of proprietary anti-spam and Zero-Hour virus protection solutions. Using core technologies including RPD Recurrent Pattern Detection, the Commtouch Detection Center analyzes billions of email messages per month to identify new spam and malware outbreaks within minutes of their introduction into the Internet. Integrated by over 30 OEM partners, Commtouch technology protects thousands of organizations, with 35 million users in 130 countries. Commtouch is headquartered in Netanya, Israel and has a subsidiary in Mountain View, CA. For more information, see:  This press release contains forward-looking statements, including projections about our business, within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. For example, statements in the future tense, and statements including words such as "expect," "plan," "estimate," "anticipate," or "believe" are forward-looking statements. These statements are based on information available to us at the time of the release; we assume no obligation to update any of them. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations as a result of numerous factors, including business conditions and growth or deterioration in the Internet market, commerce and the general economy, both domestic as well as international; fewer than expected new-partner relationships; fewer than expected license agreements resulting from Commtouch's exclusive rights to market DCC; competitive factors including pricing pressures; technological developments, and products offered by competitors; the ability of our OEM partners to successfully penetrate markets with products integrated with Commtouch technology; a slower than expected acceptance rate for real time AV solutions in general and the Commtouch Zero-Hour(TM) Virus Protection product in particular; availability of qualified staff for expansion; technological difficulties and resource constraints encountered in developing new products, such as the Zero-Hour solution; and the failure of Commtouch to meet The NASDAQ Capital Market's listing standards in the future, as well as those risks described in the text of this press release and the company's Annual Reports on Form 20-F and reports on Form 6-K, which are available through  Recurrent Pattern Detection, RPD and Zero-Hour are trademarks, and Commtouch is a registered trademark, of Commtouch Software Ltd. U.S. Patent No. 6,330,590 is owned by Commtouch.  CONTACT: Commtouch Software Ltd. Gary Davis, 650-864-2000    
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