The group claimed to have root control over some Sun servers, and successfully diverted Sun-site visitors to LulzSec's Twitter account, where they were greeted with the tweet, "WE HAVE JOY WE HAVE FUN, WE HAVE MESSED UP MURDOCH'S SUN."
The Sun site was later restored to service.
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Sabu, the online name for a central LulzSec member, last night posted this tweet about the takeover: "Sun/News of the world OWNED. We're sitting on their emails. Press release tomorrow."
Sabu also posted the email address and password to the account of Rebekah Wade, the former chief executive of Murdoch's News International Corp. until she resigned in the wake of the ongoing phone-hacking scandal in which her reporters hacked voicemails of people they were writing about.
Sabu posted a tweet saying, "BREAKING NEWS! RUPORT MURDOCH FOUND IN HIS GARDEN! WHAT?" referring to a phony story that The News visitors were redirected to that stated Murdoch had been found dead in his garden.
LulzSec announced June 25 that it was disbanding after 50 days of hacking law enforcement websites in several countries as well as Web servers of the U.S. Senate.
Meanwhile, Fox News is reporting that in the FBI has searched the homes of three people in New York's Long Island and Brooklyn who are suspected of being members of Anonymous, the hacking group from which LulzSec was formed and to which it had returned.