In order to compete with Qihoo's anti-virus software, Baidu announced in December 2012 that it will raise ~$1.5 billion in the form of bonds to make strategic acquisitions. It intends to acquire Kingsoft Internet Security (KIS), the third largest anti-virus software provider in China with ~150 million users. By including Kingsoft's security features in its searches, Baidu would improve the level of safety in its searches and with Kingsoft's wide product range, which includes Kingsoft Antivirus, Kingsoft Security Defender, Cheetah Browser and Kingsoft Mobile Defender, the company will be able to expand its distribution channel. Along with this KIS will also help Baidu to improve the user privacy issues which will in turn increase the traffic share.
Source Here
http://beta.fool.com/madhudube/2013/01/23/3-promising-internet-stocks-2013/22021/
Kingsoft AV is Dead they just forgot to tell the users