Abstract
Since the invent of Napster an earlier version of peer–topeer [P2P] network , P2P has emerged as the most significant technique for sharing content across the network[1].The traffic volume exchanged among the peers and the number of member peers in a P2P network has risen to a significant level .The reason for this significant rise is a absence of a centralized authority and distributed nature of the network .However, these reasons for significant rise of P2P network also makes the P2P networks vulnerable to various pollution attacks such as denial of service attack, content poisoning, collusion sybil etc. Liang et. al [2] has discussed pollution attacks in the Fast Track file sharing network. This network has also been used for distributing copy-righted material illegally, and their legal owners thought that their assets are distributed illegally through P2P network. Since the file distribution through P2P network is very fast, the producers/developers of multimedia data like music, films, television etc are much concerned with the apprehension that their assets are distributed illegally through P2P network. For controlling the illegal distribution of their assets, they fought legal battles in courts, but could not succeed in it .Then they employed the same P2P network, using P2P pollution attack, to stop the illegal distribution of their data files. In this paper, an evaluation is done to measure the damage to the BitTorrent distributing pirated files under certain pollution attacks, specifically Index poisoning and Uncooperative peer attacks, and to assess whether this strategy is successful..
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