By Jonathan Davies

A group of hackers calling themselves the "Lizard Squad" claim they are behind the attack on the PlayStation Network, which forced Sony to close the service for today (Monday).

Visitors to the PlayStation store are greeted with the message: "Page Not Found! It's not you. It's the internet's fault."

On Twitter, the Lizard Squad said: "PSN Login #offline #LizardSquad"

It is the latest in a series of attacks against Sony.

Sony Entertainment Network said it was aware that users are having difficulties connecting the PlayStation Network.

Microsoft suffered a similar attack on its Xbox network last week, which resulted in the network being down for at least a day. Lizard Squad claimed responsibility for that attack, as well.

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