A 23-year old hacker is facing up to 10 years in jail for targeted attacks on gaming services XBox Live and PlayStation Network.

The U.S. Attorney’s Office for the Southern District of California announced earlier this week that Austin Thompson, 23, had entered a guilty plea for one count of damage to a protected computer following an investigation by the FBI’s San Diego field office.

Operating under the Twitter handle @DerpTrolling, Thompson made a sport of incapacitating popular online gaming networks with denial-of-service attacks when he was a teenager, between December 2013 and January 2014.

Denial-of-service (DoS) attacks intentionally flood the target’s servers with more traffic than they can handle, preventing access for regular users and possibly forcing the service offline.

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The plea agreement describes how Thompson would announce the attacks in advance via the @DerpTrolling Twitter account and later share screenshots and more tweets as evidence of a successful attack.

Multiple online gaming services, including Xbox Live, PlayStation Network, Steam, and League of Legends were targeted by @DerpTrolling.

The attacks resulted in significant downtime and delays, and the U.S Attorney reports at least $95,000 in damages as a result of Thompson’s actions.

There’s still no stated motive for the DoS attacks. The DerpTrolling account seemed satisfied with disrupting online gaming and creating chaos, going so far as to take requests from followers.

The U.S. Attorney’s office states that Thompson is 23-years-old, which would make him 18 at the time of the crime.

Damage to a protected computer is a federal felony charge and Thompson could face up to 10 years in prison and a fine of up to $250,000 with three years supervised release. Thompson’s sentencing is set for March 1st, 2019.