Reports suggest that the website of the Recording Industry Association of America (RIAA) is now up again after it was brought down by a hacker over the weekend.

The site was hacked on Sunday (January 20th), and website TorrentFreak reported that "someone allegedly decided to up the ante and wipe the site's entire database".

People posting on the social news site Reddit also suggested that the RIAA's website seems to use an Exponent Content Management System which had "a lot of vulnerabilities ... including SQL injection".

On top of this, a number of hackers then made the site link to file sharing anarchists' site Pirate Bay.

While the RIAA managed to fix the problems, the site is still being targeting by cyber criminals, because the underlying weaknesses of the SQL injection and cross-site scripting systems.

It is believed that hackers are attacking the RIAA's site in protest against the way it has pursued claims against people accused of downloading unauthorized music.