Hacker Demands Ransom From Radiohead, Accidentally Helps The Environment In The Process

Radiohead will be donating a huge sum to Extinction Rebellion, after a hacker leaked recording sessions from 'OK Computer'.

Radiohead officially released 18 hours of material from the studio recording of their celebrated third album, after a Reddit user leaked the mini disc files onto a subreddit dedicated to the band.

The user released the material after holding it for a $US 150,000 ransom -- which was allegedly lifted from stolen mini discs titled "The Entire OK Computer Sessions".

One of the leaked mini disc covers. Photo: r/Radiohead.

The tracks have already been circulating for almost a week. But instead of working to remove the leaked songs from the internet, the band have leaned into the incident.

Radiohead's guitarist Jonny Greenwood announced on Twitter on Tuesday that the band will officially release the tracks on Bandcamp -- and will donate proceeds from sales to climate activist group Extinction Rebellion.

"We got hacked last week -- someone stole Thom's minidisk archive from around the time of OK Computer, and reportedly demanded $150,000 on threat of releasing it," Greenwood said.

"So instead of complaining -- much -- or ignoring it, we're releasing all 18 hours on Bandcamp in aid of Extinction Rebellion...So for £18 you can find out if we should have paid that ransom."

Extinction Rebellion have replied thanking the band for the donation in a statement.

"From the bottom of our hearts and on behalf of the Extinction Rebellion movement -- now in 59 countries from the US to India to China with 348 groups across 248 cities and towns -- we thank Radiohead for supporting us so that we can continue to build our already far reach and powerful movement of non violent civil disobedience".

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Among the recordings is a 12-minute version of the song 'Paranoid Android', as well as an unreleased version of 'Lift' that the band declined to put on the original album because they deemed it too 'anthemic'.

Thom Yorke, left, and Jonny Greenwood in 2012. Photo: AAP

While Radiohead fans have been enthusiastic about the material release, with Reddit users even releasing cue files with all of the tracks marked already, many have taken to the band's subreddit to condemn the actions of the hacker.

One of the administrators has posted that they "do not support or condone the release of these leaks" and any attempts to share the leaked material (rather than Radiohead's official release) "will be met with punishment".