Brian Krebs-Security Fix
A year later: A look back at McColo
A year ago today, the Internet community witnessed a remarkable event: The unplugging of McColo, a Web hosting facility in Northern California that for a long time controlled a majority of the spam-sending operations on the planet. McColo’s two main Internet providers abruptly yanked the cord after Security Fix presented them with scads of evidence collected by security researchers tying massive amounts of spam and other illicit activity to McColo’s network.
http://certifiedbug.com/blog/tag/mccolo/
FireEye Labs: Smashing the Mega-d/Ozdok botnet in 24 hours
