In this sense, the(also called scareware ), has a significant amount of “affiliates” who are responsible for the distribution of malicious code. A recent study by the FBI noted that the estimated losses due to rogue amount to USD 150 million. It shows why all those oldstrategies that often leave a sense of triviality still very effective, and why many professionals in the criminal field, seeking to expand their criminal activities and gains, migrate their efforts with BlackHat SEO techniques.”]
Source: http://malwareint.blogspot.com/2009/12/exploit-packs-and-their-relationship.html