First OS X Virus?

Mac Rumors reports on what may be the first virus to affect OS X, disguised as screenshots for the upcoming OS X 10.5 Leopard. From the report: ‘The resultant file decompresses into what appears to be a standard JPEG icon in Mac OS X but was actually a compiled Unix executable in disguise. An initial disassembly reveals evidence that the application is a virus or was designed to give that impression.’ The virus is said to also spread via Bon Jour instant messaging.

It’s unclear what the ‘virus’ is meant to do, but it’s more like a trojan because it requires the user to activate it. Check out the full posting at Slashdot.