The hacking challenge kicked off at 3:30 p.m. PT, slightly later than scheduled, at the CanSecWest security conference, which runs March 9-11 in Vancouver, British Columbia.

A team from the French security company Vupen walked off with $15,000 and a new MacBook Air after exploiting an unpatched vulnerability in Safari.

Earlier today, , fixing 62 vulnerabilities. But Vupen was still able to break the .

" has just released Safari 5.0.4 and iOS 4.3 a few minutes before the Pwn2Own contest," Vupen several hours before the contest began. "This breaks some exploits but not all!!"

TippingPoint, the security company that sponsors Pwn2Own, said earlier today that the last-minute Safari updates could affect who was awarded prize money.