Evènement pour le groupe Algorithmique Distribuée

Date 2011-01-17  14:00-15:00
TitreDissuasive Methods against Malicious Behaviors in Large Scale Distributed Systems 
RésuméUsers of large scale distributed systems deployed in the public domain do misbehave: MMOG players cheat, file sharing system users free-ride, and social network users create multiple identities or try to impersonate people they know. Traditional techniques to deal with malicious users consist in masking their misbehaviors (e.g., BFT) or preventing them (e.g., using cryptography). This talk presents dissuasive methods against malicious behaviors based on distributed verifications: users check each others actions and report detected faults. We first illustrate our approach by analyzing an epidemic high-bandwidth dissemination protocol where the inherent randomness of gossip protocols allows lightweight collusion-resilient tracking of free-riders. We then present our work on secured distributed computations in social networks where the real persons' reputation concern acts as an incentive not to misbehave.  
LieuSalle 178 
OrateurKévin Huguenin 

Aucun document lié à cet événement.

Retour à l'index