"@Sega - contact us. We want to help you destroy the hackers that attacked you. We love the Dreamcast, these people are going down," the hacking group posted on its Twitter feed.
No hacker group has claimed responsibility for the attack so far. Although, a number of recent attacks on game companies and their online services are credited with LulzSec, its denial of the credit has brought in a twist of events.
"We have identified that a subset of SEGA Pass members' emails addresses, dates of birth and encrypted passwords were obtained," Sega added. "To stress, none of the passwords obtained were stored in plain text."