FWIW, the latest security fixes don't address the exploit in MacOS wireless drivers. Two hackers, the video tape of their efforts being released today, broke into root access of a Mac in less than one minute. This is roughly the same exploit that was already used successfully on Windows and Linux machines.
The point being made here is not that Macs are bad. Its just that Apples attempt to boost sales makes it a more satisfying target to the lunatics out there. Mac users have been extremely lax about security accepting the Apple philosophy of "Be Happy, Don't Worry." That used to be one advantage of being number 3 in the marketplace. MacOS holes have always existed, but now hackers are getting interested. What will be needed to change Mac users "warm and comfy" feeling, still be promoted by Apple in their latest ads, to "be prepared"? Things will be getting a lot worse.
Several references provided on Slashdot.