Mac users face first Apple virus

Users of Apple computers were today being warned to protect themselves after the existence of a new kind of worm virus emerged. The Leap-A worm, which spreads through instant messaging program iChat, is thought to be the first virus for the Apple platform. It poses as a series of pictures which, when opened, allows the worm through a security loophole in order to implant itself in other programs. Experts say it is easy for users to protect themselves, but that the arrival of malicious code should be a wake-up call to Mac users, who have been unaffected by viruses until now.

How to protect yourself