In July 2012, Yahoo! had their online publishing service "Voices" compromised via a SQL injection attack. The breach resulted in the disclosure of nearly half a million usernames and passwords stored in plain text. The breach showed that of the compromised accounts, a staggering 59% of people who also had accounts in the Sony breach reused their passwords across both services.
Accounts breached: 453427
Breached on: July 11, 2012
Exposed data: Email addresses and Passwords
Added on: December 04, 2013