On 26 October 2011 at the High Court, Mr. Justice Arnold ordered BT to block its estimated six million customers' access to the website Newzbin2 within fourteen days, the first ruling of its kind under UK copyright law. Attempts to access the site from a BT IP address were met by the message "Error - site blocked". Newzbin claimed that the block was ineffective, and that 93.5% of its active UK users had downloaded its workaround software. A study suggested that the workaround involved encryption to hide communication between users and Newzbin2, including the use of the Tor network.