A popular Android app developer claims that another developer stole his app and added ad spam code to it. The original app, called ElectricSleep, was originally created by Jon Willis. Pay-Per-install code was added to the original app by a rogue developer. The offending app has since been removed, but the developer account of the infringer is still active. Another developer has released AirPush Detector which is capable of detecting advertising frameworks installed in apps. While these services are not illegal, they can be intrusive, and stealing apps just to add on advertising code is definitely in violation of the Android developer License agreement.”]
Source: https://securelist.com/stealing-apps-installing-ads/31726/