Last December, an apparent bug appeared in Apple’s iMessage service that caused iMessages to continue to be linked to a stolen iPhone. The customer’s messages would continue to arrive and be sent from the stolen phone even after changing passwords, a remote wipe, and a SIM card deactivation. Apple initially denied it was a bug, but did later compensate at least one affected user for her trouble.
TheNextWeb now reports that that iOS 6 resolves this issue by forcing all devices to re-enter credentials if your Apple ID settings change.
According to a source with knowledge of Apple’s steps to correct the matter, the issue has been fixed in iOS 6 through a variety of checks placed on iMessage. The most important of these is that Apple now uses its push systems to force a user to re-enter a password to use iMessage once your Apple ID credentials have been changed.
Now, if your iPhone is stolen, simply changing the password of your Apple ID will force the stolen device to prompt for a password in order to continue receiving and sending iMessages from your account. In addition, wiping your iPhone remotely using Find My iPhone will now disable the stolen device from receiving iMessages.