The FBI has been called in to investigate hacking attacks which shut down the US recording industry's trade group website at the weekend.
The Recording Industry Association of America (RIAA), at www.riaa.org, has long been a favourite target for hackers, because of the organisation's attitude to internet file sharing.
The RIAA said that the latest attack was unrelated to the SQL Slammer worm that has caused the internet to slow over the past week.
According to Reuters, an RIAA official compared the incident to the denial of service attacks that have overwhelmed government and industry web pages.
The official described the hackers as pathetic and said that it was ironic that they wanted free music but did not believe in free speech.
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