Tuesday a 9.7 gigabytes data dump was posted to the 'dark web' using an Onion address accessible only through the Tor browser. It looks as if account details and log-ins for around 32 million users of the 'cheater's website' were hit.
But checking if your personal information is included has its own set of problems.
Thursday there are warnings that if you try to find out if you are others you know are in the Ashley Madison 'data dump' you could also compromise your online security. This is what Sky News is reporting:
In the scramble to find out who is on the list of potential cheaters, some websites have been set up claiming to be searchable databases.
If you are just being nosey forget it and leave well alone.
Lawyers working on behalf of Ashley Madison owner Avid Life Media are fighting back.
Genuine websites "which let users search for usernames and email addresses are being forced offline by Ashley Madison, which is issuing copyright infringement threats. They say that because the database was taken from their servers without their permission, anyone publishing it is in breach of copyright."
Those searching the database leak have come up with a huge variety of registered users including 100 UK civil servants, politicians, marriage counsellors, police officers, Ministry of Defence staff and NHS workers.
The reasons why people use Ashley Madison will be varied.
The website has responded with a tough message - "We will not sit idly by and allow these thieves to force their personal ideology on citizens around the world."
However it does sound a little like they are closing the stable door after the horse has bolted.
If like this writer Ashley Madison was unknown to you prior to the hack aren't you glad?
Latest - Have some emails been harvested? In the UK SNP MP Michelle Thomson says email on adultery site database was 'hacked'.