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Numerical Algorithms for Personalized Search in Self-organizing Information Networks by Sep Kamvar

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Chapter Nine

EigenTrust

In this chapter, we address the issue of reputation in P2P file-sharing networks. The open and anonymous nature of these networks leads to a complete lack of accountability for the content a peer puts on the network, opening the door to abuses of these networks by malicious peers. Like the web, P2P networks achieve scalability and diversity of data at the expense of accountability for the quality of content.

Attacks by anonymous malicious peers have been observed on today’s popular peer-to-peer networks. For example, malicious users have used these networks to introduce viruses such as the VBS. Gnutella worm, which spreads ...

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