Android Koler is a family of ransomware that targets Android users by locking up their mobile devices and demanding a ransom. It is believed to be the mobile extension of the Reveton ransomware family. Ransomware has been a profitable venture in the PC world with the likes of Crytolocker, but is a relative newcomer on mobile devices, at least in part due to file restrictions in mobile operating systems which limit the ability of apps to access the full file system. Despite this fact, the mobile market is clearly one that ransomware operators would like to tap into and Koler is a step in that direction.
more here............http://research.zscaler.com/2014/10/android-ransomware-koler-learns-to.html
more here............http://research.zscaler.com/2014/10/android-ransomware-koler-learns-to.html