Firefox, Safari, and Internet Explorer, on the other hand, were all handily exploited by the hackers. In fact, Safari was apparently exploited in a matter of seconds. So what makes Chrome so good? According to previous Pwn2Own champ Charlie Miller:
As for Chrome, he says that he has identified a security bug in Google's browser but has been unable to exploit it because the browser's sandboxing feature and the operating system's security measures together pose a formidable challenge.
Score one for the folks at Google. Head on over to Ars Technica for a more detailed rundown of the Pwn2Own exploits. Chrome only browser left standing after day one of Pwn2Own [Ars Technica]