2013 — MacRumours.com: A group of hackers claimed responsibility for…
Data compromised
Personal information
Technical writeup
A group of hackers claimed responsibility for compromising usernames, emails, and passwords associated with MacRumors and vBulletin Forum. The hackers used a Zero Day exploit. A total of 860,000 MacRumors users were affected. It is unclear how many vBulletin Forum users were affected.
Root cause
Hacking