Yahoo (jul 11, 2012 – jan 1, 0)
Description:
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 <a href="http://www.troyhunt.com/2012/07/what-do-sony-and-yahoo-have-in-common.html" target="_blank" rel="noopener">59% of people who also had accounts in the Sony breach reused their passwords across both services</a>.
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