In an ideal world, Mac and iPhone hacker Charlie Miller would discover vulnerabilities, inform Apple, and Apple would then patch them before they had any chance of being exploited "in the wild".
Miller, however, prefers to keep them to himself so he can win MacBooks and detail them at Black Hat conferences. The good of the hacker obviously outweighs the good of the users, every one. So be it.
Miller's latest iPhone-related find was disclosed at SyScan in Signapore: