darthcamaro writes "Though IE, Chrome and Safari were all attacked and all were exploited, no single web browser was exploited at this year's Pwn2own hacking challenge as Mozilla Firefox. A fully patched version of Firefox was exploited four different times by attackers, each revealing new zero-day vulnerabilities in the open-source web browser. When asked why Mozilla was attacked so much this year, Sid Stamm, senior engineering manager of security and privacy said, 'Pwn2Own offers very large financial incentives to researchers to expose vulnerabilities, and that may have contributed in part to the researchers' decision to wait until now to share their work and help protect Firefox users.' The Pwn2own event paid researchers $50,000 for each Firefox vulnerability. Mozilla now pays researcher only $3,000 per vulnerability."