Bitcoin Talk – May 22, 2015
On May 22, 2015 attack happened. The Bitcoin forum Bitcoin Talk was hacked and over 500k unique email addresses were exposed. The attack led to the exposure of a raft of personal data including usernames, email and IP addresses, genders, birth dates, security questions and MD5 hashes of their answers plus hashes of the passwords themselves. On Mar 27, 2017 only breach discovered.