A mobile development author has discovered a mechanism in Apple's iPhone softwarethe mac news you care about

When Apple launched the App Store, they suggested that the use of DRM'd and signed applications could allow them to protect the iPhone from malicious applications and suggested that they could deactivate such applications remotely. Jonathan Zdziarsk...

Researcher discovers targeted iPhone app "kill switch"
MacRumors : Mac News and Rumors
Apple's Ability to Deactivate Malicious App Store Apps