At CanSecWest's recent Pwnium 3 competition, hackers were unable to breach Google's Chrome operating system.

"Pwnium is Google’s hacking contest at CanSecWest, focused on finding exploits within the Chrome operating system," writes's Sam Reynolds. "It was started last year as an alternative to Pwn2Own because Google didn’t like the contest’s lack of disclosure requirements."

"Chrome OS, which is a Linux-based operating system running a Chrome browser, may have been more difficult to hack thanks to ten bug fixes which arrived just before the competition," notes TechCrunch's Sarah Perez. "Six of these were high-level bugs and four earned payouts of $1,000-$2,000 from Google’s ongoing efforts to rewards researchers for finding bugs."

"Despite Google offering a total of $3.14159 million in bounties, entrants couldn't demonstrate a working exploit on the Series 5 550 target machine," writes Engadget's Jon Fingas.

"The company did reveal, however, that it is 'evaluating some work that may qualify as partial credit,'" writes BGR's Dan Graziano.