The CanSecWest Conference in Vancouver going on now until tomorrow, March 20th, 2009, reported the IE 8 has been hacked by a hacker who calls himself Nils. Soon, Nils successfully hacked the latest versions of Safari and Firefox. A competition called PWN2OWN was put on yesterday to exploit IE 8, Firefox and Chrome on Windows 7 platform and Safari and Firefox on Macintosh. Along with desktop browser, the competition includes exploiting mobile devices of the following popular platforms; Blackberry, Android, iPhone, Nokia and Windows Mobile.
Based on the information from this article and as of this post, the only successful hacks were IE 8, Safari and Firefox. Hackers at the conference state there is less research on mobile devices to find possible bugs to exploit the phone.