Free Riding in P2P Networks
Free riding is the process utilising the resources of the Peer to peer network without reasonably contributing back to it.
P2P system or a peer to peer communication model sustains purely on the contributions of the peers, where no central resources location of management is not available.
As a result, free riding node act as a leech on the system which is making an impact on the system on performance aspects as well as resources availability aspects.
The most popular example of free riding is downloading a resource like a file, software or a video content from a public torrent site, where the client immediately terminate the torrent client just after the download completion without start seeding.
As a result, private torrent sites have been defined to maintain the performance and the resource availability by enforcing a download/ upload ratio, where you should return back in some ratio to the network to maintain the account in active mode and earn some reputation or points.