​Sony PlayStation back online after attackers claim credit for outage

A group calling themselves Lizard Patrol have claimed responsibility for a recent Sony PlayStation Network outage.

The Sony PlayStation Network is back online after suffering intermittent outages on Monday, which were apparently caused by attackers.

A group that's become known for overloading gaming sites with traffic claimed responsibility for the outages, which affected Sony's PlayStation Network on Sunday evening for US users.

As users began reporting troubles logging into the service, people behind the Twitter account @lizardpatrol claimed credit for the attack, posting the message "PSN Login #offline #LizardSquad".

Sony's PlayStation status page indicated the site was suffering "intermittent" problems and the unit's support team later posted this message on Twitter: "We are aware that users are having issues connecting to PSN. Thanks for your patience as we investigate."

Almost nine hours after the attack, the site appears to be back up and running again.

LizardSquad has gained a reputation for taking down gaming sites, last week claiming responsibility for an outage on Microsoft's Xbox Live service, according to ZDNet sister site Gamespot.

The group also claimed responsibility for a denial-of-service attack on Sony's PlayStation Network this August, prompting a blog post from the company saying that users' personal data was safe.

"The PlayStation Network and Sony Entertainment Network are back online and people can now enjoy the services on their PlayStation devices. The ability to access our network services was temporarily impacted due to a distributed denial of service attack. We have seen no evidence of any intrusion to the network and no evidence of any unauthorized access to users' personal information," a Sony spokesperson said. The company has not identified the source of the attack, the spokesperson added.

Sony bulked up on security after its massive 2011 PlayStation Network breach which exposed personal and financial information of 77 million users.

This latest attack follows a breach earlier this month on Sony Pictures.

A group calling itself the Guardians of Peach have claimed responsibility for the breach, which has so far resulted in the exposure of personal information on about 47,000 individuals including celebrities.

A handful of recently released films have also been leaked since the attack.

North Korea has denied involvement in the attack on Sony Pictures. This follows reports that investigators were exploring whether the country had a hand in the attack, perhaps in retribution for the film The Interview, which depicted the assassination of the country's leader Kim Jong-un.

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