Users of jailbroken Apple iPhones in Australia are reporting that their wallpapers have been changed by a worm to an image of '80s pop icon Rick Astley. This is the first time a worm has been reported in the wild for the iPhone. According to a report by Sophos, the worm, which exploits users who have installed SSH and not changed the default password, hunts for other vulnerable iPhones and infects them.
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