iOS v6.1.3 blocks evasi0n jailbreak
The latest iOS jailbreak, evasi0n, has been out since early February, but it was only yesterday that Apple blocked most of the exploits used for the jailbreak in their latest iOS firmware update, v6.1.3. In fact, Apple went so far as to credit the evad3rs group, who came up with the evasi0n jailbreak, for helping them fix the bugs.
This update, however, seems to come a little too late according to Forbes as more than 18.2 million iOS 6 device owners have visited the jailbroken Cydia store since evasi0n jailbreak was released. As for the seemingly late release of the firmware fix, David Wang, one of the four hackers behind the evasi0n tool told Forbes that, “If there’s no injection vector they know about that lets you activate the attack through drive-by, [Apple doesn't] seem to put much priority on it.” Which is to say, that since the evasi0n jailbreak required a USB connection to the PC, the risk of running malicious software was very low, so Apple put the fix for the jailbreak as low priority.
As for getting a jailbreak out for iOS 6.1.3, Wang says, “We’ll probably wait until the next major release.”