This is not a happy Chritmas Eve for jailbreakers I guess, Apple has taken steps to make jailbreaking more difficult in iOS 6.1 despite a public jailbreak not being available for iOS 6.0 yet, reports i0n1c.
There must have been some change of guard at Apple.iOS6.1 adds again tougher protections although public JB community hasn't broken iOS6 yet
I0n1c is the hacker behind the untethered jailbreak for iOS 4.3.2. He also jailbroke the iPad 3 on iOS 5.1. Although i0n1c doesn't go into specifics, this is bad news for a jailbreak community that has yet to see a jailbreak for the iPhone 5 and other devices on iOS 6. Read more information about this via i0n1c's blog