"It is much more of an argument that at the low rates of penetration of the Mac in the market is why there is no malware," he says. "You get a few points up, and like we are seeing now, you will start seeing malware."
Will the same model work to predict when significant malware will appear on smartphone handsets? Not necessarily. One of the assumptions is that the value of compromising a PC and Mac are identical. That assumption is less likely to hold up between a PC and a handset.
"The difference between a PC and a handset is that there is going to be different values in attacking each," O'Donnell says. "That difference will be a big factor in when people move to attacking a new platform."
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