Zombie Master gets 57 months

From here

Jeanson James Ancheta, 21, from the Los Angeles suburb of Downey, profited by installing adware on a network of innocent third-party compromised computers. According to prosecutors, some of the computers attacked were at the Weapons Division of the US Naval Air Warfare Center in China Lake, California and at the US Department of Defense.

Ancheta admitted advertising his botnets online via an IRC channel entitled #botz4sale, selling access to software that could remotely control computers to deliver spam and launch distributed denial-of-service (DDoS) attacks against websites. Websites hit by a DDoS attack could then be blackmailed into paying large sums of money to have the public's access to the websites restored.