Last summer, a number of big and well-known brands, and celebrities, were hacked on Twitter. The teenager behind is now sentenced to three years in prison and after serving three years probation.
The world's most profiled people were hacked - tried to earn bitcoin
Graham Ivan Clark (18), from Hillsborough County, Florida, was just 17 years old when he managed to hack the largest and most famous Twitter accounts in the world, including Bill Gates, Apple and Kanye West.
Clark was jailed in late July, just weeks after the hack.
As part of the terms, Clark must give up all his passwords and the money earned on the fraud on which the hacker earned more than 840,000 kroner.