Gottfrid Svartholm Warg, a Swedish hacker and founder of file-sharing website The Pirate Bay, was found guilty of hacking crimes in Denmark on Thursday.

In what the prosecution called the country's biggest hacking case, Svartholm Warg, 30, was found guilty of breaking into various Danish public databases controlled by IT service provider CSC in 2012, accessing hundreds of thousands of social security numbers, criminal records and extradition agreements. Svartholm Warg allegedly committed the crime along with his accomplice, a 21-year-old Dane only known as "JKT" (the judge asked his name not to be published) according to media reports.

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Throughout the trial, Svartholm Warg's lawyer argued that the hacker was innocent, and that someone else carried out the crimes by hacking into his computer.

"I have recommended that the court dismiss the case based on the remote access argument," Svartholm Warg’s lawyer Luise Høj said, according to TorrentFreak. "It is clear that my client’s computer has been the subject of remote control, and therefore he is not responsible."

The hacking theory was supported by security researcher Jacob Appelbaum, who provided evidence in the trial. Appelbaum expressed his disappointment with the conviction on Twitter.

Gottfrid convicted. I'm sad to hear that only two of the jurors understand the technology involved: https://t.co/cpqXvgUHP7 #FreeAnakata — Jacob Appelbaum (@ioerror) October 30, 2014

The judge will announce the length of their sentence on Friday. The prosecution has asked for six years in prison.

"The punishment should be close to the maximum punishment, which can be six years in prison," the senior prosecutor in the case, Maria Cingari, said according to local media. "It shouldn’t be under five years."

Svartholm Warg has already spent 11 months in prison in Denmark. Has was arrested in 2012 in Cambodia, where he was living at the time, and then extradited to Sweden, where he was facing similar charges for hacking into the servers of a company that provided tax services to the Swedish government.

While serving a one-year sentence in Sweden, he was then extradited to Denmark approximately a year ago.

Previously, in 2009, Svartholm Warg and Pirate Bay's three other founders were found guilty of copyright violations.