We’ve been hearing about a nasty virus making the rounds that will encrypt a user’s files and attempt to solicit a ransom payment in order to regain access to the data. Currently it’s been able to bypass most security and antivirus software and has primarily been spread as an email attachment. As always, exercise caution when opening ANY email attachments.
There is no fix for the infection if it succeeds in encrypting your files. The only way to recover the data is from a backup. Make sure your backups are in place and working.