Cheating spouses using a website that caters to married spouses wanting an extramarital affair have more to worry about than an angry spouse.

A hacking group has broken into the servers of Ashley Madison and are threatening to go public with members information, Reuters reported.

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They call themselves The Impact Team and the hackers said they have the adult photos and fantasies of the site's members.

The group told Ashley Madison's parent company, Avid Life Media, to shut down that site, as well as the sugar-daddy site Established Men, or risk having all of the personal, and potentially embarrassing information released, Reuters reported.

Ashley Madison claims 37 million members and lives by the slogan, "Life is short. Have an affair," CNN reported.

Avid Life Media said, "We apologize for this unprovoked and criminal intrusion into our customers' information," The Washington Post reported.

Security experts said the attack was spurred by the company's service that will scrub member's profile information for a $19 fee. The hackers said the feature doesn't do what is promised, Reuters reported.