Probably because of http://blogs.technet.com/b/mmpc/archive/2011/03/18/operation-b107-rustock-botnet-takedown.aspx http://blogs.technet.com/b/mmpc/archive/2011/

Probably because of http://blogs.technet.com/b/mmpc/archive/2011/03/18/operation-b107-rustock-botnet-takedown.aspx http://blogs.technet.com/b/mmpc/archive/2011/03/18/operation... ?