This week's security breach belongs to BioWare and Sega who lost usernames, passwords and other personal information of more than 18,000 Neverwinter Nights users.
According to BioWare, a hacker gained unauthorized access to a "decade-old BioWare community server system associated with the Neverwinter Nights forums" and managed to steal "information such as user account names and passwords, email addresses, and birth dates of approximately 18,000 accounts."
BioWare stressed that they never stored sensitive data such as social security numbers and that they have made sure that the hacker couldn't steal any credit card data.
The "LulzSec" hacker group who's been responsible for recent attacks against Eve Online, MineCraft and Bethesda Softworks denied any responsibility for the attack. The group even offered to "help [Sega] destroy the hackers that attacked you. We love the Dreamcast, these people are going down."