A 17-year-old boy has been found guilty of 50,700 “instances of aggravated computer break-ins” after being involved in a series of high-profile cyber-attacks. BBC News reports that the teen, Julius Kivimaki of Finland, has not been jailed, despite the severity of his crimes.

“Court documents state that his attacks affected Harvard University and MIT among others, and involved hijacking emails, blocking traffic to websites and the theft of credit card details,” the story reports.

The youth, who used the nickname Zeekill, received a two-year suspended prison sentence from the District Court of Espoo in Finland. His PC was confiscated and he was ordered to hand over property obtained through his crimes.

“Judge Wilhelm Norrmann noted that Kivimaki had only been 15 and 16 when he carried out the crimes in 2012 and 2013,” the story reports.

A statement from the court said the verdict “took into account the young age of the defendant at the time, his capacity to understand the harmfulness of the crimes, and the fact that he had been imprisoned for about a month during the pre-trial investigation.”