Sony Corp said its PlayStation Network and Sony Entertainment Network had been temporarily disrupted by hackers in a distributed denial-of-service attack on Monday.

Last month, Sony Pictures Entertainment was hit by a massive hack that shut down most of the studio’s network for more than a week.

The group apparently behind the massive breach, Guardians of Peace, posted the following message to various peer-to-peer Web sites on Monday: “Stop immediately showing the movie of terrorism which can break the regional peace and cause the War!” in an apparent reference to “The Interview.”