What are the details surrounding the leak of Ashley Madison's user data?

The Ashley Madison user data leak occurred in July 2015, when a group or individual going by the name "The Impact Team" breached the security of the Ashley Madison website, a Canada-based online dating service and social networking service marketed to people who are married or in relationships. The hackers gained access to users' personal information, including names, email addresses, encrypted passwords, and credit card transaction records. They threatened to release the data unless the site was shut down, particularly criticizing its full delete feature that claimed to remove user profiles and associated data for a fee without actually doing so. When their demands were not met, The Impact Team released over 25 gigabytes of company data, exposing the private information of over 30 million users. This event led to widespread privacy concerns, reports of extortion attempts, and even some unverified cases where exposed individuals faced personal and professional repercussions. It highlighted issues of cybersecurity and the potential consequences of extramarital affairs being publicly disclosed.