Alison Saunders, Chief Crown Prosecutor for CPS London said: ?Glenn Steven Mangham has pleaded guilty to two computer misuse offences, one of them the most serious offence under the Computer Misuse Act which carries a maximum penalty of 10 years. This was the most extensive and flagrant incidence of social media hacking to be brought before British courts. Fortunately, this did not involve any personal user data being compromised. "We worked closely with the Met?s Police Central e-Crime Unit, the FBI and the US Department of Justice to prepare a strong and compelling prosecution case and faced with that case, Mangham has admitted responsibility for his acts. He claimed his intention was to improve security but the method he decided to use to achieve this was actually illegal.?