Conficker, the Internet’s No. 1 threat, gets an update

[IDG] Security researchers say a worm that has infected millions of computers worldwide has been reprogrammed to strengthen its defenses while also trying to attack more machines.Conficker, which takes advantage of a vulnerability in Microsoft’s software, has infected at least 3 million PCs and possibly as many as 12 million, making it into a huge botnet and one of the most severe computer security problems in recent years.
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