[Falcon]

Theoretically, no. If the mac OS faced threats that were proportionately equal to the threats that face Windows, it's very unlikely that it would be able to protect the user. However, the majority of malware is coded for Windows-based operating systems. It is simply more profitable to target the Windows user market than the Mac user market.

However, that does not mean that a Mac-based PC (that's right, Mac's are PC's too) cannot "catch" a virus, like Apple likes to claim.

Apple doesn't give a damn about security. They tend to prosecute hackers who come to them and present Mac's flaws, rather than using that information to better their OS.