It's true to say that there's a lot lot less malware in existence for Macs than there is for Windows PCs. But that doesn't mean that it doesn't exist at all. And clinging onto the statistics of the much smaller proportion of Mac malware compared to Windows malware is going to be cold comfort if your Apple Mac is the one which ends up getting infected.
The latest Mac malware seen by the experts at SophosLabs, is a new variant of the OSX/Imuler Trojan horse. In the past, earlier variants of the OSX/Imuler malware has been spread via topless photos of a Russian supermodel or embedded deep inside boobytrapped PDF files.
This time, it appears that the a version of the Imuler Trojan has been used in an targeted attack against sympathisers of the Dalai Lama and the Tibetan government, as the malware appears to have been packaged with images of Tibetan organisations.