Sophos is at it again, this time discovering a version of the popular game Angry Birds: Space laced with malware. The version in the official Google Play store is not affected. This version came from an unofficial app store. When downloaded, the device becomes part of a botnet http://nakedsecurity.sophos.com/2012/04/12/android-malware-angry-birds-space-game/
I love the comment from Jay further down. http://nakedsecurity.sophos.com/2011/12/13/microsoft-free-phones-android-malware-victims/