New trojan that only encrypts files appears

A new Trojan has emerged that apparently encrypts crucial portions of user documents, rendering them effectively corrupted. Unlike other such applications in this "ransom-ware" category of malware though, "Trojan.Ramvicrype" does not make any demands for payment. Damage isn't limited to user files though; according to Symantec, there is a risk that all the files in the Windows system folder could end up encrypted if a file in there is opened while infected. In the meantime, Symantec is offering a free tool that will recover files affected by the malware. Article