With claims that sideloaded apps are 50 times more likely to contain malware, Google is tightening restrictions for developers distributing apps outside the Play Store.

Currently, developers who create “sideloaded” Android apps are exempt from Google’s verification requirements.

Android developer verification is largely targeting commercial developers, with Google saying that it’s “committed to keeping Android an open platform” for student and hobbyist developers. Google is creating a separate Android developer console to facilitate this, which will place restrictions on the number of apps and installs.