Click here to read the whole article.Mac users are being warned about what has been described as one of the first viruses for Apple's OS X software.
The malicious program, known as Leap-A, tries to spread via Apple's iChat instant messaging program.
The worm disguises itself as images of Apple's forthcoming version of its operating system, called Leopard, and plunders buddy lists if installed.
Security firms said Leap-A was not widespread and was unlikely to catch out many Apple users.
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