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 
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. 
Commtouch Software Ltd.
Gary Davis, 650-864-2000
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