Users of Android Phones Warned of Hong Tou Tou

BEIJING, February 22, 2011 - A new virus on Android devices has been spotted in China by NetQin, a
global leading mobile security service provider. Dubbed "Hong Tou Tou", the
virus targets Chinese users and is distributed by hiding itself in legitimate
apps such as the well known game RoboDefense.

(Logo: photos.prnewswire.com/prnh/20100215/CNM002LOGO)

Once the app containing Hong Tou Tou is started, the virus will connect
to a network in the background and will attempt to collect private
information in the phone, encrypt it and send it to a remote server
controlled by the virus writer. The virus is also capable of analyzing the
user's private information using key words. These behaviors result in serious
leakage of the user's privacy.

However, if you are using NetQin Mobile Anti-virus 4.6 for Android on
your smartphone, you can rest assured as it fully protects your phone with a
high scan capability. NetQin experts give the following suggestions for users
to stay safe with your phone:

    1. Download applications from trusted sources, reputable
       application stores and markets, and be sure to check reviews, ratings
       and developer information before downloading. Beware of the
       repackaged mobile apps from Android market, especially those labeled
       as "Cracked Version" or "Revised Version", as they may be embedded
       with viruses.
    2. Never blindly accept application requests. Closely monitor
       permissions requested by any application; an application should not
       request permission to do more than what it offers in its official list
       of features;
    3. Be alert for unusual behaviors on your phone, such as
       stealthy network connection or SMS.
    4. Download a trusted security application that can scan the
       applications being downloaded onto any mobile device and perform a
       full scan for your phone regularly to keep away viruses, malware and
       Trojans. NetQin Mobile Anti-virus is protecting millions of users from
       virus threats. NetQin Mobile Anti-virus 4.6 is available to download at
       www.netqin.com/products/antivirus/ and on Android Market.

About NetQin

Founded in 2005, backed by Sequoia, Mayfield, Fidelity and Ceyuan VC,
NetQin Mobile Inc. (referred to as "NetQin" hereafter) is a global leader in
mobile security services, delivers proven mobile security solutions based on
a cloud-computing model, including anti-virus, anti-malware, anti-spam,
privacy protection, data backup and recovery, as well as data management - to
more than 70 million users in more than 200 countries and regions worldwide -
to protect them against mobile security threats. As the market leader in
mobile security, NetQin holds 67.7% market share of China mobile security
market (2010 Whitepaper on China Mobile Security Market by Frost & Sullivan,
January 2011), and has received multiple industry awards and honors,
including Technology Pioneer 2011 by the World Economic Forum, and the 2009
China Frost & Sullivan Award for Mobile Security Market Leadership.

For more information, please visit www.netqin.com .

Sophia Zhang of NetQin Mobile Inc., +8610-8565-5555, zhangxiuli at netqin.com