I read this article from PCmag.com website “Microsoft said Tuesday that it has nipped the emerging “Kelihos” botnet in the bud, severing the ties between it and the zombie computers it controlled.”
Here’s the full article: http://www.pcmag.com/article2/0,2817,2393673,00.asp#fbid=I_zuWJk3l7_
Excellent job by Microsoft Digital Crime Unit. If you want to read the blog posted at Technet.com, here’s the link: