P2P networks are harbingers of copyright violations costing the music, movie and the software industries millions of dollars in lost revenue, through illegal sharing of content. Moreover, the anonymous social networking sites act as playgrounds for criminals and sexual predators, leading to a fast growing social malaise. Since, P2P networks are anonymous in nature, highly scalable and censorship-resistant by design, controlling shared content is non-trivial to say the least. Hence, there is an urgent need by the research community to counter these threats. We present the novel concept of
Conscience-Based Routing (CBR)
actively block queries pertaining to illegal music/movies or those pertaining to topics such as national security or pornography. Moreover, CPs pass poisoned content to peers requesting illegal content so that their overall experience is severely diminished, discouraging them from seeking illegal content. Such an approach is suitable for a pure decentralized P2P network where individual peers perform overlay query routing. We establish the effectiveness of our approach through simulation and also discuss strategies to encourage “conscientious” behavior by peers in a real-world scenario.