A string file in the latest Google Play store update's Android application package hints that the store may come with a built-in malware scanner in the near future.
According to Android Police, the string file has mentions of an “App Check”, along with various menu popups such as “Allow Google to check all apps installed to this device for harmful behavior?" and "Installing this app may harm your device." As a result, it is rumoured that Android devices will be soon have the ability to check out apps before installing, or users get a warning if there's anything suspicious. Android Police speculates the new feature is related to Google's recent takeover of Virus Total.