sign of the times …
… Apple is recommending that Mac users install antivirus software.
But don’t read this as an admission that the Mac operating system is suddenly insecure. It’s more a recognition that Mac users are vulnerable to Web application exploits, which have replaced operating system vulnerabilities as the bigger threat to computer users.
On November 21 Apple updated a technical note on its Support Web site that says: "Apple encourages the widespread use of multiple antivirus utilities so that virus programmers have more than one application to circumvent, thus making the whole virus writing process more difficult." …
Read on : Cnet.com
Dat krijg je ervan als je marktaandeel toeneemt (Apple) en dat van MS afneemt zie NU.NL
http://www.nu.nl/news/1870434/50/Marktaandeel_Windows_bereikt_historisch_dieptepunt.html