Morgan Pietz, an attorney who played a key role in bringing down Prenda Law, sued Rightscorp in 2014, saying that the company’s efforts to get settlements from alleged pirates went too far. Rightscorp’s illegal “robocalls” violated the Telephone Consumer Protection Act (TCPA), a 1991 law that limits how automated calling devices are used. The class-action lawsuit claimed that some Rightscorp targets were receiving one robocall on their cell phone per day. It’s generally illegal to have automated devices call cell phones.
Source: Rightscorp agrees to pay $450,000 for illegal robocalls | Ars Technica