Google on Monday released fixes for a number of bugs in Chrome discovered and exploited during the Pwn2Own contest. The contest showcased vulnerabilities and exploits in most of the major browsers, including Internet Explorer and Firefox. The French security and exploit-sales firm VUPEN earned a $100,000 reward from Google for its two Chrome vulnerabilities, and an anonymous researcher also earned $60,000 for two separate vulnerabilities. Google security officials said that they plan to publish some details of the exploits used against Chrome in the coming weeks.
Source: https://threatpost.com/google-patches-four-pwn2own-bugs-in-chrome-33/104828/