Eight Android apps with more than 2 billion downloads in the Google Play store have been engaging in fraudulent ad practices, BuzzFeed News reported today. Seven of the apps are owned by Cheetah Mobile, a publicly-traded Chinese company, and one app is owned by Kika Tech, a Chinese company headquartered in Silicon Valley. The two companies have been found to abuse app permissions in order to monitor new downloads and hijack app-install bounties that could range in the millions of dollars, according to app analytics firm Kochava.