2011 — Sony Online Entertainment: Hacked by LulzSec, 24.6M records

2011 24.6M records affected

Technical writeup

Hacked by LulzSec. In addition to the Sony Playstation Network breach, compromised 77 million records. More than 23,000 lost financial data, according to Sony.

Root cause

Hacked

References

http://www.computerworld.com/s/article/9216343/Sony_cuts_off_Sony_Online_Entertainment_service_after_hack