In the latest salvo in Fox and Cablevision’s nasty carriage dispute that has led to the network’s blackout in 3 million Cablevision homes, Fox today served Cablevision with a cease and desist letter for what it described as “encouraging theft of copyrighted material.” Fox’s demand stems from news reports that Cablevision has allegedly directed subscribers to illegal websites to view Fox shows as well as NFL games and Major League Baseball playoffs. “Copyright law exists to protect the very creative freedoms that fuel our industry,” Fox said in a statement. “As both a creator and owner of intellectual property — not to mention major sports franchises — Cablevision knows better and should immediately call an end to this unlawful activity.”