Popular pornographic website Brazzers has been hacked, leaving hundreds of thousands of users’ viewing habits available to see on the internet.

Almost 800,000 people’s names and details have been made available on the internet after a cyber attack.

The exposure actually appears to have been leaked from the Brazzersforum site, where viewers discussed their favourite scenes and performers. But since the logins between that forum and the main site were shared, it meant that attackers were able to steal logins from the forum and use them on the site.

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Security researchers said that the hack actually stealing forum details might be more embarrassing than the original logins to the site.

"Problem with a hack like that is it's a forum," security researcher Troy Hunt told Motherboard. "Worse than just adult website creds, this is what people were talking and fantasising about."

That data was stolen in 2013 but has only just become public.

The breach was confirmed by two security hackers who passed some of that evidence onto Motherboard. Researchers also contacted some of the people involved in the breach who confirmed anonymously that they had been users of the site.

It is not the first data breach that appears to be the result of vBulletin, the software that powers the forum. Administrators are required to keep that up to date to ensure that it is safe from attacks - but in this case and others, they appear not to have done so.