An anonymous reader writes: Following a court win by its client BMG over Cox Communications this week, Rightscorp has issued an unprecedented warning to every ISP in the United States today. Boasting a five-year trove of infringement data against Internet users, Rightscorp warned ISPs that they can either cooperate or face the consequences. "For nearly five years, Rightscorp has warned US internet service providers (ISPs) that they risk incurring huge liabilities if they fail to implement and enforce policies under which they terminate the accounts of their subscribers who repeatedly infringe copyrights," the company said in a statement. "Over that time, many ISPs have taken the position that it was simply impossible for an ISP to be held liable for its subscribers' actions -- even when the ISP had been put on notice of massive infringements and supplied with detailed evidence. There had never been a judicial decision holding an ISP liable."