Crowds: anonymity for Web transactions
ACM Transactions on Information and System Security (TISSEC)
A Social History of Bitnet and Listserv, 1985-1991
IEEE Annals of the History of Computing
Securing distributed systems with information flow control
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
Characterizing privacy in online social networks
Proceedings of the first workshop on Online social networks
NOYB: privacy in online social networks
Proceedings of the first workshop on Online social networks
Generalized Identity Based and Broadcast Encryption Schemes
ASIACRYPT '08 Proceedings of the 14th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Persona: an online social network with user-defined privacy
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
On the leakage of personally identifiable information via online social networks
Proceedings of the 2nd ACM workshop on Online social networks
Lockr: better privacy for social networks
Proceedings of the 5th international conference on Emerging networking experiments and technologies
A case for P2P infrastructure for social networks - opportunities & challenges
WONS'09 Proceedings of the Sixth international conference on Wireless On-Demand Network Systems and Services
Attribute-based broadcast encryption scheme made efficient
AFRICACRYPT'08 Proceedings of the Cryptology in Africa 1st international conference on Progress in cryptology
VPriv: protecting privacy in location-based vehicular services
SSYM'09 Proceedings of the 18th conference on USENIX security symposium
TaintDroid: an information-flow tracking system for realtime privacy monitoring on smartphones
OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation
Generic transformation for scalable broadcast encryption schemes
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Privacy, availability and economics in the Polaris mobile social network
Proceedings of the 12th Workshop on Mobile Computing Systems and Applications
Confidant: protecting OSN data without locking it up
Middleware'11 Proceedings of the 12th ACM/IFIP/USENIX international conference on Middleware
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User privacy has been an increasingly growing concern in online social networks (OSNs). While most OSNs today provide some form of privacy controls so that their users can protect their shared content from other users, these controls are typically not sufficiently expressive and/or do not provide fine-grained protection of information. In this paper, we consider the introduction of a new privacy control---group messaging on Twitter, with users having fine-grained control over who can see their messages. Specifically, we demonstrate that such a privacy control can be offered to users of Twitter today without having to wait for Twitter to make changes to its system. We do so by designing and implementing Twitsper, a wrapper around Twitter that enables private group communication among existing Twitter users while preserving Twitter's commercial interests. Our design preserves the privacy of group information (i.e., who communicates with whom) both from the Twitsper server as well as from undesired Twitsper users. Furthermore, our evaluation shows that our implementation of Twitsper imposes minimal server-side bandwidth requirements and incurs low client-side energy consumption. Our Twitsper client for Android-based devices has been downloaded by over 1000 users and its utility has been noted by several media articles.