Krebs on Security – (International) Crimeware author funds exploit buying spree. Researchers have tied ‘Paunch’, the author of the Blackhole exploit kit, to the Cool Exploit Kit, and noted that Paunch has been updating both kits with newlypurchased, undisclosed exploits.
Source: http://krebsonsecurity.com/2013/01/crimeware-author-funds-exploit-buying-spree/