Mozilla, a Non Profit Organisation who develop the popular internet browser Firefox have resisted a request by the Government to remove a software tool that is claimed to assist in circumventing federal efforts at curbing internet piracy.

Immigration and Customs Enforcement, part of the US Department of Homeland Security, have been taking over domain names it believes house piracy related information.

The MafiaaFire tool, available to Firefox via a third party matches these website domains with an alternate address, so that visitors can reach the sites.