The Web site for the U.S. recording industry's trade group, the Recording Industry Association of America (www.riaa.org), is under siege again from an apparent denial-of-service attack that has left the site largely unavailable since Jan. 24.

An RIAA spokesperson says the FBI and the Secret Service are investigating the source of the attack. "It's pathetic that those who want free music don't believe in free speech," he said late Tuesday afternoon.

The RIAA's Web site has been a popular target for hackers. Since July, the site has been the target of defacements and multiple denial-of-service attacks. "Technicians are working to make sure the press and public will have access to information about the RIAA," the spokesman says.