After two days at this year's Pwn2Own browser-hacking competition, Chrome alone stands unhacked; hackers infiltrated every other browser on day one. Perhaps the best indicator of Chrome's security is the fact that competitors haven't even attempted to crack Chrome's "sandbox" despite a $US10,000 prize.
Chrome gives every process started within the browser very limited privileges to get the job done, keeping it essentially in the sandbox, so while it's possible to get in the sandbox, you can't do very much while you're there. It seems like this bodes extremely well for Chrome's security system, especially compared to its competition. [ITworld]