Australian iPhone owners in Australia have been infected by a worm that has changed their wallpaper to an image of 1980s pop crooner Rick Astley. The worm is capable of breaking into jailbroken iPhones if their owners have not changed the default password after installing SSH. Once in place, the worm appears to attempt to find other iPhones on the mobile phone network that are similarly vulnerable, and installs itself again. On each installation, the. background wallpaper changes the lock background wallpaper to a picture of Astley with the message: “Iikee is never going to give you up””]
Source: https://grahamcluley.com/iphone-worm-discovered-wallpaper-rick-astley-photo/