Korean researcher Jung Hoon Lee, who worked alone under the name lokihardt and earned $110,000 in just two minutes.
Using more than 2000 lines of code, Lee was able to take down both stable and beta versions of Chrome by exploiting a buffer overflow race condition in the browser.
He then walloped an info leak and race condition in two Windows kernel drivers to secure SYSTEM access. The Chrome bug earned him $75,000 while the privilege escalation bug netted another $25,000. To finish it off Google's Project Zero, as it usually does when Chrome is hacked at the event, paid Lee an extra $10,000.
Lee boosted his daily total to $225,000 using-after-free vulnerability to take down Safari. Lee exploited an uninitialized stack pointer in the browser, something that bypassed its sandbox and netted him an additional $50,000.
Lee who also took down two other browsers yesterday, told HP Security Research's Dustin Childs that the Chrome exploit was the toughest to pull off.