Online game networks Xbox Live and Playstation Network remain down Friday after an apparent hack attack.
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The two services were offline much of Christmas Day in an apparent denial of service attack, USA Today reported.

Sony’s PlayStation Twitter account said the company was looking into the outages Christmas morning, but the network still appeared down as of Friday morning.

Meanwhile, Xbox Live is still reporting “limited” service across its network as well.

A group called Lizard Squad is taking credit for the takedown, the paper reported. The group had previously claimed credit for the attacks on the PlayStation Network and online games World of Warcraft and League of Legends back in August.