Kelihos Botnet was sending out 3.8 billion spam emails per day before being dismantled by Microsoft and Kaspersky Labs. Microsoft is alleging it was created by Russian software developer Dominique Alexander Piatti who was formerly an employee at an antivirus firm. This released from an updated class action lawsuit affidavit against Piatti. The alleged hacker was using 21 separate domain names to operate the Kelihos. The amended complaint goes into great length about the exact details of the case however the basics of what Microsoft is alleging are as follows, the botnet was operated by more than 20 people, controlled over 41,000 computers worldwide in which many of those computers are still infected with its malware.

The full PDF is available at http://blogs.technet.com/cfs-file.ashx/__key/communityserver-blogs-components-weblogfiles/00-00-00-80-54/6180.Kelihos-Botnet-_2D00_-Amended-Complaint.pdf