Yes, Windows has many more exposed security risks. Mac's have around an 8-9% market reach right now. As Apple's market share raises you'll see more and more viruses targeted at Mac's as we have in the last couple of weeks. Let's see what happens if Apple ever is able to get 25%+ of the market using Mac's.<p>In 16 years of using Windows with no Anti-Virus software installed, I have never gotten a virus. Maybe Microsoft should do a better job of educating users on what not to click on.<p>I run a company that does IT Support for businesses. Once a week or so, I'll have a CEO bring in his kids Laptop with a virus and a good number of times it was caused by their kid using some p2p file sharing program and downloading and running cracked versions of software which contained the virus. This is not yet as big of a problem for Apple as the number of software titles in general is much smaller and thus people downloading cracked copies which might contain a virus is going to be smaller.<p>Two cents.