Microsoft has set up a new portal that includes updated information about worms and spyware threatens for PCs. Microsoft's "Malware Protection Center Portal" gives visitors access to the company's malware encyclopedia, which offers information about malwares and provides download links for Microsoft's antivirus and antispyware signatures.

The portal also provides information on the top threats and potentially unwanted software that Microsoft is observing and that?s being reported by users.

You can check it out here: http://www.microsoft.com/security/portal/