In September 2007, a large number of internal emails were leaked from anti-piracy company MediaDefender by an anonymous hacker. Some of the leaked emails discussed hiring hackers to perform DDoS attacks on The Pirate Bay's servers and trackers. In response to the leak, The Pirate Bay filed charges in Sweden against MediaDefender clients Twentieth Century Fox Sweden AB, EMI Sweden AB, Universal Music Group Sweden AB, Universal Pictures Nordic AB, Paramount Home Entertainment (Sweden) AB, Atari Nordic AB, Activision Nordic, Ubisoft Sweden AB, Sony BMG Music Entertainment (Sweden) AB, and Sony Pictures Home Entertainment Nordic AB, but the charges were not pursued. MediaDefender's stocks fell sharply after this incident, and several media companies withdrew from the service after the company announced the leak had caused $825,000 in losses.