Chinese app developer Cheetah Mobile has been accused of running a major click fraud scam, using its Android apps which have a combined install base of more than 2 billion. BuzzFeed News reported that research from mobile analytics company Kochava found eight apps – seven from Cheetah Mobile and one from Kika Tech – misusing Android user permissions to gain referral earnings from app installs. If you spent much time on Google Play, some of these apps might sound familiar to you: Clean Master, Security Master, Battery Doctor, and Kika Keyboard. A few of these apps have an install base…

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