CORRECTING FIRST SENTENCE Apple iPhone user Amy Coopes holds an iPhone displaying a wallpaper featuring 80s pop icon Rick Astley on November 10, 2009 in Sydney. An Australian student has created what is thought to be the world's first iPhone worm, which replaces the popular device's wallpaper with a picture of 1980s pop icon Rick Astley. Ashley Towns, a 21-year-old technical college student who lives with his family near Sydney, said he concocted the worm, which can spread from phone to phone, to raise awareness about security.