The social implications of the Ashley Madison hack happened because of an anonymous group of hackers decided to realease the "secure" information on the website to the public. Ashley Madison was a site used by people that were either married or in a relationship to commit adultery. Since the information has been realeased, thousands of peoples secret affairs are now being discovered by anyone.
The Hack released private information regarding private affairs that were going on in a relationship. Members on the site are now vulnerable to being exposed for having an affair. Any spouse or husband can now look up on a website to discover if there partner was in an affair. This essentially destroys hundreds of thousands of married couples relationships.
Though this hack does not directly affect people who didn't use the site, It still introduces many dangers. Since a private website was easily hacked, it shows how many other websites are vulnerable to the same outcome. To avoid being hacked, please take precautions the next time that you are on the web and understand that everything you do can be seen