The Fourth Circuit Court of Appeals has released its decision in BMG v Cox Communications, an appeal involving secondary liability for copyright infringement. The case has been closely followed by Internet service providers, the content industry, attorneys, academics, and copyright and cyberlaw experts – generally anyone interested in copyright and the Internet. The Fourth Circuit affirmed the district court’s ruling that Cox is not entitled to a DMCA safe harbor defense, but remanded the case for a new trial because the lower court incorrectly instructed the jury on the standard for contributory infringement.