The Australia Broadcasting Authority has been forced to take its Website offline following what is believed to be a hacker attack.
An offensive message protesting against Internet censorship is believed to have been posted on the site and mirrored on several other Australian and offshore Websites.
A spokesperson from the ACA said the site has been offline since 12:30pm Thursday night, but is expected to be back up before the end of the day.
The ABA has not confirmed the site has been hacked, but is "working on the assumption somebody has hacked the site," the spokesperson said.
"We can't actually confirm it has been hacked because we can't access the site," the spokesperson said.
The ABA's Internet service provider (ISP) was instructed to shut down the services and is "making some arrangements" to have the site reloaded, the spokesperson said. She would not name the ISP.
"At the moment we can't really do anything, we don't have access to the site," she said.
According to the spokesperson, the ABA is aware of at least one other site which is hosting the message, but had no response to questions regarding what actions would be taken to remove the material.
"I imagine its quite widely distributed," the spokesperson said.