Virus infects worm

Instances of the Klez worm have become inadvertently infected by the Chernorbyl virus, for extra-destructive-horribleness:

“Klez is just another Windows program,” says Graham Cluley of the UK anti-virus firm Sophos. “[CIH] just infects the executable file, whereupon Klez then forwards itself around in a double infected state.”

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