2015 — Ashley Madison: Data breach reported, 37.0M records 2015 37.0M records affected Share on X Technical writeup Data breach reported. Reference: http://krebsonsecurity.com/2015/07/online-cheating-site-ashleymadison-hacked/ Root cause Hacked Referenceshttp://krebsonsecurity.com/2015/07/online-cheating-site-ashleymadison-hacked/