Another one bytes the dust

The report describes the November 2008 removal of McColo, a US-hosted network that operated botnet C&Cs and enabled massive spam campaigns; after upstream providers severed routing the Internet saw a large immediate drop in spam (Spamhaus reported about a 60% decline), though operators attempted reconnections and the document warns of migration of C&Cs, increased malware distribution to regain lost botnet capacity, and challenges for law enforcement.