Beware! Hackers can remotely hack your Android phone and steal data stored on it if you are using the free version of CamScanner , a highly-popular Phone PDF creator app that has more than 100 million downloads on Google Play Store. However, CamScanner was actually a legitimate app, with no malicious intentions whatever, for quite some time. CamScanner used ads for monetization and even allowed in-app purchases. But, at some point, that changed, and recent versions of the CamScanner app shipped with an advertising library containing a malicious module . So, to be safe, just uninstall the CamScanner app from your Android device right now, as Google has already removed the app from its official Play Store . Unfortunately, Kaspersky researchers found a hidden Trojan-Dropper.AndroidOS.Necro.n module within the CamScanner app that could allow remote attackers to secretly download and install malicious programs on the user's Android device without their knowledge.