He is the co-founder, chairman and CEO of the Internet security company Qihoo 360.

[1] Zhou Hongyi was born in Huanggang, Hubei, China.

He has a master's degree from Xi'an Jiaotong University.

[1] Zhou was one of China's pioneer internet entrepreneurs, founding 3721 in 1998, a search engine which sells Chinese-language keywords for Roman-alphabet domain names.

However, with differences between Zhou and Yahoo's management, Yahoo eventually sold its China operations to Alibaba in 2005[4] and Zhou left to start Qihoo 360.