In June 2011 as part of a final breached data dump, the hacker collective "LulzSec" obtained and released over half a million usernames and passwords from the game Battlefield Heroes. The passwords were stored as MD5 hashes with no salt and many were easily converted back to their plain text versions.
Accounts breached: 530270
Breached on: June 26, 2011
Exposed data: Passwords and Usernames
Domain: battlefieldheroes.com
Added on: January 23, 2014