During the past year MPs, peers or staff have used parliamentary computers to log on to the site 26 times.
Ashley Madison, a service for individuals seeking an affair, was the victim of a huge data leak in July, when hackers targeted the site and released the details of millions of users.
In response to the revelation, parliament said the website is blocked on its network, but that MPs, their staff, researchers, advisers and members of the House of Lords are able to use the internet on their computers during non-working hours.
It said further information is unavailable because data is only stored for one year.
Read more http://www.rt.com/uk/314721-ashley-maddison-parliament-computers/