August 18, 2015
Ashley Madison user data leaked
The Impact Team published a 9.7 GB dump of Ashley Madison customer data on August 18, 2015 — exposing millions of accounts from the extramarital dating site.
What it was for
The Impact Team breach dumped emails, credit cards, and internal source code — demonstrating that even adult sites storing secrets face extortion and reputational ruin. It accelerated debates over data retention, bcryptA password hashing function — slow by design to resist brute-force attacks on stolen databases. versus weak hashing, and whether security teams owe duty of care to users engaging in sensitive behavior.
Why it's here
Ashley Madison was the hack that proved no niche site was too embarrassing to target.
Why it mattered
It highlighted weak password storage and destructive hacktivist motives.
What it solved
Nothing for users — it exposed that 'discreet' marketing did not mean secure engineering.
Media
ImageAshley Madison data breachDVSROSS, CC BY 2.0, via Wikimedia Commons
Related
- Facebook suspends Cambridge AnalyticaMarch 16, 2018
- Equifax discloses massive data breachSeptember 7, 2017
- EU General Data Protection Regulation takes effectMay 25, 2018