This week, a computer worm using the old "hole" in Windows infected millions of PC
A computer worm, using many months ago in the Windows Server service, infected more than a million PCs in 24 hours, the Hacker reports. On Wednesday morning, the Finnish company F-Secure estimated the total number of 3.5 million computer-infected Downadup worms, while clarifying that this number has increased by 1.1 million PCs since Tuesday. And, as the F-Secure researcher Sean Sullivan explains on the company's blog, this assessment is very restrained.