Are “Offerwalls” siphoning your personal information?
A relatively new development in app advertising has a concerning feature. It leeches much of the same information that many Android Trojans also steal. Through an app promotion campaign, a new feature called “offerwalls” are used by Pay Per Install (PPI) services to promise further adoption and revenue for app developers. But what is the real danger? It is found in the way these services uniquely identify users and the information they collect.

