When did the Ashley Madison hack occur?

The Ashley Madison hack occurred in July 2015, when a group of hackers known as "The Impact Team" breached the systems of Avid Life Media, parent company of the adultery-themed dating service Ashley Madison. The attackers gained access to sensitive personal information belonging to millions of users, including names, email addresses, and payment details, along with details of their sexual preferences and fantasies, which were leaked online. The event caused a considerable scandal given the nature of the site, which explicitly targeted people already in relationships looking for discreet affairs, leading to privacy concerns and highlighting issues regarding data security on the internet.