 The RIAA and MPAA contracted MediaSentry, on behalf of plaintiff labels and studios, to collect information about IP addresses sharing potentially infringing files on peer-to-peer networks.Collected information included lists of potentially infringing files an IP address reports as available for downloading, files actually downloaded by MediaSentry from an IP address, and dates and times of the observations.In the United States, MediaSentry is not licensed as a private investigator in some of the states in which observed files are physically located.