A number of iPhones in Australia have reportedly been infected by a worm that replaces the background wallpaper with an image of 80’s pop icon Rick Astley.

“The worm, which could have spread to other countries although we have no confirmed reports outside Australia, is capable of breaking into jailbroken iPhones if their owners have not changed the default password after installing SSH,” explained Sophos security researcher Graham Cluley. “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.”

If you have a jailbroken iPhone/iTouch and installed SSH, you must change the default password before you become rick-rolled.

Of all the sinister things that Internet viruses do, this might be the worst: They can make you an unsuspecting collector of child pornography.

Heinous pictures and videos can be deposited on computers by viruses — the malicious programs better known for swiping your credit card numbers. In this twist, it’s your reputation that’s stolen.

Pedophiles can exploit virus-infected PCs to remotely store and view their stash without fear they’ll get caught. Pranksters or someone trying to frame you can tap viruses to make it appear that you surf illegal Web sites.

Whatever the motivation, you get child porn on your computer — and might not realize it until police knock at your door.

What is this world coming to?