When asked about the overseas expansion on the earnings conference call for Q1 2014, Zhou Hongyi, the CEO of Qihoo, said he didn’t the mobile business model built for the domestic market can work in the overseas markets. Apart from a couple for mobile security, 360 Security and 360 Safe, there are another two, 360 Clean Droid (a cleanup app) and 360 Vault (a privacy protection app). Qihoo monetizes users of its mobile security app with a self ran Android app store, through advertising, revenue shares from third-party games, among others. Qihoo claims it’s the largest mobile game distributor in China — all the distributions are through the app store. Cheetah Mobile, of course, may figure our a way to convert the Clean Master users to its mobile security solution, CM Security.