Ransomware

New Malware is evolving allowing new viruses to encrypt data/files on users' computers. Only way to get your data/file is to pay the ransom. These viruses are now being called Ransomware such as Reveton or Crypto Locker, and they attempt to extort money from victims by encrypting or blocking access to their data without their knowledge, then demanding a ransom in order to undo the damage, according to police and FBI officials.
Learn more about how to avoid ransomware and how to detect it.

                     http://www.microsoft.com/security/resources/ransomware-whatis.aspx