Windows Viruses on a MAC

[Dr_Maybe]

That was my first thought. BIOS and firmware are potentially vulnerable.

The intel macs don't have a BIOS right? As understand it, bootcamp sort of emulates a BIOS so Windows works.

 

[Mord]

the EFI has a compatibility support module, and virii could attack that and it could potentially mess up the EFI and brickify your mac

 

[secondplace]

i think the chances of that are quite small tho. anyways, being on the parallels forums I have not heard anyone mention a windows virus infecting their mac.