A hacker has admitted to stealing a vast trove of data from a US military communications system.
Sean Caffrey stole information about more than 800 users on a satellite communications system, including usernames and email addresses.
He also gained information from about 30,000 satellite phones, according to the National Crime Agency.
The hacking took place on June 15 2014, but the 25-year-old wasn't arrested until March 2015.
Police arrested Caffrey after intelligence showed the attack came from his internet connection.
National Crime Agency officers conducted a forensic examination of the man's hard drives and discovered the data that was stolen.
Evidence on the hacker's computers also showed that an internet messaging account had been opened in relation to the attack, but Caffrey had used a different name.
Caffrey has now pleaded guilty to the charges made against him under the Computer Misuse Act at Birmingham Crown Court.
The United States Department of Defense has claimed it cost $628,000 (£492,000) to repair damage caused by the hacker.
Janey Young, investigations manager at the National Crime Agency, said: “No one should think that cyber crime is victimless or that they can get away with it.
“The NCA has people with skills like Caffrey’s, but they’re doing the opposite to him in detecting cyber-criminals and bringing them to justice.
“We’re working to keep the internet a safe space for people who use it legitimately."