Mitchell Frost must also pay US$40,000 in restitution to O'Reilly and $10,000 to the University of Akron, where he was enrolled at the time of the hacking. He had pleaded guilty to the charges in May.

Frost was a first-year student at the university at the time of the attacks. He used the school's computer network to control a botnet he'd built up between August 2006 and March 2007, and launched denial of service (DOS) attacks against Rudy Giuliani's Joinrudy2008.com website, Billoreilly.com and Anncoulter.com. He attacked the Bill O'Reilly site five times, ultimately forcing it offline.

The University of Akron was disrupted too, when Frost knocked its network offline for eight-and-a-half hours while trying to DOS-attack a gaming server hosted by the university. That happened on March 14, 2007. Frost's dorm room was raided two weeks later. He wasn't charged, however, until May of this year.

Prosecutors asked the court for a tough sentence after Frost lied to his probation officer about an online business he'd set up following his arrest. In a letter to the court, Frost said he set up the this year after quitting his job as a Stanley Steemer carpet cleaning technician. that is legal for sale in some U.S. states, including Ohio.

Frost said he was selling the product as a bonsai plant fertilizer and never meant for it to be consumed by humans. He said that he lied to his probation officer in a moment of panic.