Pwn2Own hacking contest pits researchers against four browsers, four smartphones. The first researcher to hack Firefox, IE or Safari, or each of the smartphones, wins a cash prize of $15,000. Charlie Miller, an analyst for the Baltimore-based consulting firm Independent Security Evaluators, is upset. Organizers defend the contest’s rules, saying it encourages researchers to “weaponize” exploits. Miller: “There’s no way I’m gonna show my exploit if someone wins ahead of me””]