Microsoft has detected a new piece of malware targeting Apple OS X computers that exploits a vulnerability in the Office productivity suite patched nearly three years ago.



From PCWorld:

The exploit discovered by Microsoft doesn't work with OS X Lion, but does work with Snow Leopard and prior versions. Oh wrote that it is likely attackers have knowledge about the computers they are attacking, such as the victim's operating system version and patch levels.

The malware delivered by the exploit is written specifically for OS X and is basically a "backdoor," or a tool that allows for remote control of a computer.

  Microsoft Detects New Malware Targeting Apple Computers