[Mr.Anonymous]

Quote:

How do I avoid ransomware? There are several free ways to help protect your computer against ransomware and other malware: Keep all of the software on your computer up to date. Make sure automatic updating is turned on to get all the latest Microsoft security updates. Keep your firewall turned on. Don't open spam email messages or click links on suspicious websites. Download Microsoft Security Essentials, which is free, or use another reputable antivirus and anti-malware program. If you run Windows 8 or Windows RT, you don’t need Microsoft Security Essentials. Scan your computer with the Microsoft Safety Scanner.

Source:
http://www.microsoft.com/security/re...re-whatis.aspx