There have been lots of threads about viruses targeting macs and will windows on a mac make them more susceptible etc but something occurred to me earlier which made me a little uncomfortable. What about a windows based virus designed to attack/damage mac hardware? This is pure speculation but because of the vast array of different types of hardware used in PC's there is no standard and therefore no common configuration for virus writers to code for. With windows (and all it's insecurities) now running on standardised mac hardware is it not now more likely that a malicious hardware specific virus could emerge which only affects macs? For example a virus which screws about with the clock speeds of the graphics chip and ramps it up to melting point? I hope I'm wrong..!