How Apple's iOS Went From Insecure To Most Secure
GMGruman writes "There's no such thing as a perfectly secure operating system, but security experts agree — somewhat grudgingly in some cases — that iOS, Apple's mobile operating system, is the most secure commercial OS today, mobile or desktop. It didn't start that way of course, and Robert Lemos explains what Apple did to go from insecure to most secure."
Considering that the last major jailbreak used a PDF rendering exploit in Safari to allow users to jailbreak their devices online, which requires modifications to files in system directories, I'd highly beg to differ.
And while jailbreaks for iOS happen for almost every point release, they are getting tougher and tougher to find (as in it takes the dev-team more and more time to find a patch).