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Tom Brown
02-22-2007, 06:18 AM
There's an IRC worm that hit my company yesterday and it's nasty. It attacks XP through TCP port 139 (netbios-ssn).
We are finding out a couple of other local companies got it a few days ago. They use different AV suppliers than we do. Symantec told us we were the first case they had heard of and created a custom AV defs file for us.
If you run Symentec AV, refresh your client to the February 2007 version and install the February 21 (or newer) virus definitions file.