We had conveyed the challenge from Google to the Hackers sometime back, that it was willing to offer 20,000$ to anyone who could hack into Chrome. Well, Pwn2Own is over and no one even attempted to hack into Chrome [running on Cr-48, Chromium OS]. Only two teams pre-registered for hacking into Chrome, out of which one team never showed up, and the other said that they had no successful exploit on Chrome, and instead concentrated their efforts on a possible Blackberry exploit. Mozilla Firefox also survived. IE8 and Safari both were exploited. Safari had been updated to version 5.0.4 fixing some 60 bugs, but even then it would have fallen to the French Security Firm, VUPEN’s exploit. Irish Metasploit developer Stephen Fewer used 3 different bugs and connected them to get around the security in Internet Explorer 8. Windows, since then has released a statement saying that the given bugs are not there in IE9, due to release on Mar 14th.
When it comes to mobiles, both Android and Windows Phone 7 were untouched. Blackberry Torch 9800 OS was hacked by a team using a vulnerability in the Web-Kit browser rendering engine. Google since then has also released an update to patch its own Chrome browser which uses the same Web-Kit browser rendering engine. Apple and Blackberry are yet to publish updates to patch the same. iOS 4.2.1 was hacked using a vulnerability in Mobile Safari. The same vulnerability is found in iOS 4.3..