People living under oppressive regimes who used the adultery dating site to arrange secret liasons could be at risk of prison or the death penalty.

The hacking of the siteĀ has exposed millions of people, including hundreds in Saudi Arabia where adultery is potentially punishable by death.

And while the site was predominantly used by people looking to cheat on their partner, it is thought that many single gay people used the service to avoid detection by oppressive governments.

Homosexuality is punishable by death in Saudi Arabia, while in Qatar – where 50 members are registered – it carries a five-year prison sentence.

Sky’s Technology Correspondent Tom Cheshire said one Reddit user based in Saudi Arabia has even fled the country after being exposed.

He said: “ was sold as a way to get casual hook-ups for cheating spouses, but some users in the Middle East say they used it as a discreet way of having meetings with homosexual men who didn’t want to be identified.

“There are 1,200 email addresses with the Saudi Arabia suffix where homosexuals face the death penalty.

“More than 50 accounts are from Qatar where homosexual relationship are punishable by five years in prison.

“And there are 1,500 from Turkey where homosexuality isn’t illegal but you can get kicked out of the country or banned from military services.”

Details of the site’s 37 million members were obtained by hackers in July, who demanded that the site be shut down.

This week, with the site still online, they released the data on the dark web.

Among those exposed are civil servants, senior military officers and university professors.