Two hacker groups Famed God and Lizard Squad, Posted on Twitter to claim responsibility for the DDoS attack on the PlayStation Network and Sony Entertainment Network.
It also appears that the PlayStation Plus free games service are working, as some Twitter users have indicated.
PlayStation Tweet:
"Network update: our engineers are aware of the issues and are working to resolve them. We'll keep you posted - sorry for the inconvenience"
No personal information had been leaked in the attack, but the rolling outage persists in various places, some ten hours or more after the attack began.
PlayStation posted on his blog update about Network is back Online.