The third annual Pwn2Own security competition, which challenges hackers and security experts to find vulnerabilities in web browsers and mobile devices, has come to a close taking its usual share of victims. As noted last week, Safari was compromised in less than 10 seconds using a prepared exploit while Firefox and IE were taken down shortly thereafter. Google's Chrome browser, however, was the only one left standing - despite rules of the contest being relaxed on day two to make the attacks easier.

Previous Pwn2Own champion Charlie Miller said that, although he did find a security hole in Google's browser, he was unable to exploit it because of Chrome's sandboxing feature and Windows 7 security measures together pose a formidable challenge. Notably, on the mobile side of things, BlackBerry, Windows Mobile, Android and iPhone also emerged unscathed.