99% of PCs @ Risk

Silicon reports that a flaw in Microsoft's Windows Meta File (WMF) has spawned dozens of attacks since its discovery last week, security experts warned on Tuesday.

The attacks so far have been wide-ranging, the experts said, citing everything from an MSN Messenger worm to spam that attempts to lure people to click on malicious websites.

Microsoft plans to release a fix for the WMF vulnerability as part of its monthly security update cycle on 10 January, according to the company's security advisory.