A 23-year-old man was arrested by U.K. police who is suspected of being involved in a hacking attack last year against a satellite communications system operated by the U.S. Department of Defense.

The network intrusion occurred on June 15. The stolen data included contact information for about 800 people, like names, titles, email addresses and phone numbers, as well as the identifying numbers (IMEIs) for 34,400 devices.

Although the suspects name was not released, it was the result of part of a larger law enforcement campaign that targeted cybercrime and resulted in 56 arrests.

The hacker responsible for the intrusion published screen shots of the database control panel and a message on Pastebin that read: “We smite the Lizards, LizardSquad your time is near. Were in your bases, we control your satellites. The missiles shall rein upon thy who claim alliance, watch your heads, ** T-47:59:59 until lift off. We’re one, we’re many, we lurk in the dark, we’re everywhere and anywhere. Live Free Die Hard! DoD, DISA EMSS : Enhanced Mobile Satellite Services is not all, Department of Defense has no Defenses.”

The message was signed by a group calling itself the ISIS Freedom Fighters.

A recent study from the Brookings Institution, a Washington, D.C., think tank, concluded that ISIS supporters operated at least 46,000 and as many as 70,000 Twitter accounts at the end of last year.

In an update, U.K. police (National Crime Agency) arrested 57 suspected hackers as part of a cybercrime crackdown dubbed "strike week."

The suspects are charged with crimes such as breaking into the networks of multinational corporations and government agencies to steal data, launching distributed denial of service attacks, and developing and distributing computer viruses and other malicious software.

For more on the strike, check out the video below.