The Conficker malware still resides on millions of PCs worldwide, according to research from Microsoft



From v3.co.uk:

The company said in its latest Security Intelligence Report that though Conficker has faded from the public eye, the malware is still spreading and poses a significant threat to enterprises more than two years after its initial discovery.

According Microsoft's research, Conficker infections or attacks were detected as many as 1.7 million times in the fourth quarter of 2011 alone, up by roughly 100,000 from the same period in 2010.

  Microsoft finds Conficker malware still a threat to users