P2P (peer-to-peer) is a type of file-sharing network that allows individuals across the globe to trade files, or torrents, directly with one another without going through a third-party server. Computers on a file-sharing network link up using peer-to-peer software. A few examples of files shared over P2P include freeware, shareware, betas, and original works of all kinds from music to photography, programs and scripts. It is illegal, however, to share copyrighted materials without permission.
Copyrighted materials include software that is being shared in a way that is inconsistent with its End User License Agreement (EULA), commercial music and movies. These products are often shared despite laws that protect the works by prohibiting unauthorized distribution. Even a user who only intends to download materials becomes a distributor because of the way P2P works. As a torrent is being received, the parts already present on the hard drive are automatically uploaded to others requesting the file.
Music illegally shared over P2P has been a central focus for lawsuits. This isn’t a surprise since the first peer-to-peer network was dedicated to sharing music torrents. To stop the hemorrhaging of protected music over file-sharing networks, the Recording Industry Association of America (RIAA) has sued some 40,000 individuals.