After a week full of Red Bulls, Fruit by the Foot and dreams of In-N-Out, the mighty Sony VAIO loaded with Linux stood as the only machine unhacked by the end of the PWN 2 OWN hacking contest at CanSecWest. As you're well aware by now, the MacBook Air on display was seized in two minutes by the presumably well prepared Charlie Miller, and after two full days of work, Shane Macaulay and a few of his 1337 associates managed to crack the Vista rig on Friday.

Reportedly, Shane and his pals weren't expecting to do battle with the extra protected SP1 version of Vista, and while the exact loophole won't be divulged, we are told that it was a cross-platform bug that "took advantage of Java to circumvent Vista's security." In the end, it was reported that some folks on hand had discovered bugs in the Linux OS, but many of them "didn't want to put the work into developing the exploit code that would be required to win the contest."

Source- http://www.engadget.com/2008/03/29/linux-becomes-only-os-to-escape-pwn-2-own-unscathed/