Jack: scalable accumulator-based nymble system
Proceedings of the 9th annual ACM workshop on Privacy in the electronic society
Making a nymbler nymble using VERBS
PETS'10 Proceedings of the 10th international conference on Privacy enhancing technologies
FAUST: efficient, TTP-free abuse prevention by anonymous whitelisting
Proceedings of the 10th annual ACM workshop on Privacy in the electronic society
Poster: arbitrators in the security infrastructure, supporting positive anonymity
Proceedings of the 18th ACM conference on Computer and communications security
BNymble: more anonymous blacklisting at almost no cost (a short paper)
FC'11 Proceedings of the 15th international conference on Financial Cryptography and Data Security
PERM: practical reputation-based blacklisting without TTPS
Proceedings of the 2012 ACM conference on Computer and communications security
Brief announcement: arbitrators in the security infrastructure
SSS'12 Proceedings of the 14th international conference on Stabilization, Safety, and Security of Distributed Systems
Stayin' alive: aliveness as an alternative to authentication
SP'12 Proceedings of the 20th international conference on Security Protocols
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Anonymizing networks such as Tor allow users to access Internet services privately by using a series of routers to hide the client's IP address from the server. The success of such networks, however, has been limited by users employing this anonymity for abusive purposes such as defacing popular Web sites. Web site administrators routinely rely on IP-address blocking for disabling access to misbehaving users, but blocking IP addresses is not practical if the abuser routes through an anonymizing network. As a result, administrators block all known exit nodes of anonymizing networks, denying anonymous access to misbehaving and behaving users alike. To address this problem, we present Nymble, a system in which servers can “blacklist” misbehaving users, thereby blocking users without compromising their anonymity. Our system is thus agnostic to different servers' definitions of misbehavior—servers can blacklist users for whatever reason, and the privacy of blacklisted users is maintained.