Qihoo Takes on Baidu in China's Search Engine Wars

Antivirus company Qihoo is already second in China
Zhou Hongyi, co-founder of Qihoo 360 Technology Photograph by Keith Bedford/Bloomberg

In the past few years, Zhou Hongyi, the 43-year-old co-founder of Chinese antivirus company Qihoo 360 Technology, has engaged in high-profile legal conflicts with Yahoo China and Tencent, which operates China’s QQ instant-messaging service. Zhou says he’s used to rubbing competitors the wrong way. “In China,” he says, “newcomers are normally viewed as troublemakers.”

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