Detecting and Defending against Malicious Attacks in the iTrust ...

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Experimental Evaluation (Response Time) Response Time 100 90 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 Number of requests in a window ICOIN 2012 iTrust Yung-Ting Chuang x=1 x=0.7 x=0.4 x=0.2
Related Work Other unstructured publication, search, retrieval systems Gnutella - uses flooding of requests A node makes a copy of information when it receives the information it requested Distributes requests up to maximum depth or time-to-live Freenet – uses replication of information Replicates information at a node, even if the node did not request it Nodes that respond successfully to requests receive more metadata and more requests ICOIN 2012 iTrust Yung-Ting Chuang
Page 1 and 2: Presented by Yung-Ting Chuang Resea
Page 3 and 4: Introduction Today, we use central
Page 5 and 6: Design of iTrust Source of Informat
Page 7 and 8: HTTP Implementation of iTrust apach
Page 9 and 10: iTrust Properties Probability p of
Page 11 and 12: Detecting Malicious Attacks ICOIN 2
Page 13 and 14: Detecting Malicious Attacks Exampl
Page 15 and 16: Defending Malicious Attacks ICOIN 2
Page 17 and 18: Defending Malicious Attacks Exampl
Page 19: Experimental Evaluation (Accuracy)
Page 23 and 24: Conclusions iTrust is desirable fo
Page 25: Questions? Comments? Our iTrust We

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