A service-centric approach to access control and monitoring based on distributed trust
CASCON '07 Proceedings of the 2007 conference of the center for advanced studies on Collaborative research
Distributed support for public and private accountability in digital ecosystems
Proceedings of the International Conference on Management of Emergent Digital EcoSystems
Secured and trusted three-tier grid architecture
International Journal of Ad Hoc and Ubiquitous Computing
Trustworthiness monitoring of dynamic service compositions
Proceedings of the 6th International Workshop on Enhanced Web Service Technologies
Establishing trust between mail servers to improve spam filtering
ATC'07 Proceedings of the 4th international conference on Autonomic and Trusted Computing
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The effectiveness of current anti-spam systems is limited by the ability of spammers to adapt to new filtering techniques and the lack of incentive for mail domains to filter outgoing spam. This paper describes a new approach to spam protection based on distributed trust management. This is motivated by the fact that the SMTP mail infrastructure is managed in a distributed way by a community of mail domain administrators. A trust overlay architecture and a new protocol are presented. The TOPAS protocol specifies how experiences and recommendations are communicated between a spam filter at each mail domain and its associated trust manager, and between trust managers of different mail servers. A technique for improving mail filtering using these trust measures is also described. Initial simulations indicate the potential of this approach to improve rates of false positives and false negatives in anti-spam systems.