Malware for OS X

A malware bug, Boonana Trojan, using Java gas been detected for Mac OS X, including OS X.6. This malware is distributed through social media sites such as FaceBook etc. Avoid downloading any video, or codec, when you are asked 'Is this you in this video?"

Here is a link:-

Boonana Trojan for Mac OS X spreads via social media

Safe browsing practices is still the best defense against this.

Also wise to use the built in Firewall.

Also posted here:
http://www.mac-forums.com/forums/ap...rt-new-trojan-horse-apps-said-attack-mac.html

In addition to harryb's advice, also check out the Antivirus FAQ:

Official Antivirus and Firewall FAQ