The hackers quit their "anti-security" operation last month, but have apparently returned to target News International following the phone-hacking scandal.
The LulzSec Twitter feed started up again tonight, sending users to the newspaper's website, which briefly redirected to a spoof page reporting the false death of Rupert Murdoch.
"The Sun's homepage now redirects to the Murdoch death story on the recently-owned New Times website," the hackers said via Twitter. "Can you spell success, gentlemen?"
The bogus story on The Sun website reported that Rupert Murdoch had committed suicide by ingesting a large quaintity of paladium chemicals. The story claims he was found slumped over a garden hedge fashioned into a galloping horse.
LulzSec then started to post what appeared to be emails and passwords of News International staff. Another Twitter feed associated with the group claimed to have hacked a server owned by the now-defunct News of the World, calling on police to investigate the mail server.
The hackers followed that up by redirecting The Sun website to the LulzSec Twitter feed, suggesting the "real damage is currently giving the admins heart attacks".
This article originally appeared at pcpro.co.uk