Those worried about the Safari TIFF exploit found in the Apple iPhone can rest easier thanks to an unexpected source: the AppSnap iPhone hacking application.

Apart from jailbreaking the iPhone and getting it ready for third-party applications, AppSnap also fixes Apple's TIFF bug. This is also the exact same exploit used by AppSnap to jailbreak the iPhone.

Please note that jailbreaking the iPhone will not unlock it. AppSnap does open the iPhone to installation of other third-party applications, however, so after running it you can then run any of the many unlocking applications available for the iPhone.