In November 2015, the forum software maker vBulletin suffered a serious data breach. The attack lead to the release of both forum user and customer accounts totalling almost 519k records. The breach included email addresses, birth dates, security questions and answers for customers and salted hashes of passwords for both sources.
Amount of leaked user accounts
Dates of birth, Email addresses, Homepage URLs, Instant messenger identities, IP addresses, Passwords, Security questions and answers, Spoken languages, Website activity