A new ransomware family is targeting Android devices, locking access to the screen, and constantly pestering the user to enter his payment card details. The ransom demand is between 10 and 100 times over the price of some phones, and most users who can’t remove the screen locker will instead choose to buy a new phone rather than paying the crooks. The threat is currently targeting only Russian-speaking users, as its ransom note is only available in Russian. It uses Google’s Cloud Messaging platform, which allows app creators access to a service that takes the load off their servers.
Source: https://www.bleepingcomputer.com/news/security/android-ransomware-locks-phone-and-asks-for-credit-card-number/