Communications of the ACM
An information-theoretic measure for document similarity
Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
Using trust and risk in role-based access control policies
Proceedings of the ninth ACM symposium on Access control models and technologies
A Trust based Access Control Framework for P2P File-Sharing Systems
HICSS '05 Proceedings of the Proceedings of the 38th Annual Hawaii International Conference on System Sciences - Volume 09
Access Control Systems: Security, Identity Management and Trust Models
Access Control Systems: Security, Identity Management and Trust Models
Towards a Gravity-Based Trust Model for Social Networking Systems
ICDCSW '07 Proceedings of the 27th International Conference on Distributed Computing Systems Workshops
Combining provenance with trust in social networks for semantic web content filtering
IPAW'06 Proceedings of the 2006 international conference on Provenance and Annotation of Data
A peer auditing scheme for cheat elimination in MMOGs
Proceedings of the 7th ACM SIGCOMM Workshop on Network and System Support for Games
A semantic web based framework for social network access control
Proceedings of the 14th ACM symposium on Access control models and technologies
Enforcing access control in Web-based social networks
ACM Transactions on Information and System Security (TISSEC)
A privacy preservation model for facebook-style social network systems
ESORICS'09 Proceedings of the 14th European conference on Research in computer security
Proceedings of the first ACM conference on Data and application security and privacy
Content-based filtering in on-line social networks
PSDML'10 Proceedings of the international ECML/PKDD conference on Privacy and security issues in data mining and machine learning
Using community structure to control information sharing in online social networks
Computer Communications
Policy-driven role-based access management for ad-hoc collaboration
Journal of Computer Security
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Social networks are graphs that represent relations among people, institutions, and their activities. We introduce a novel social access control (SAC) strategy inspired by multi-level security (MLS) [1] for protecting data on social networks. In MLS, the data objects and subjects are classified in hierarchical levels based on security clearance and access controlled accordingly. Instead of clearance levels, we use trust levels to annotate objects and subjects. The trust level of an object is specified by the creator. The trust level of a subject is obtained from a trust modeling process [2, 3]. Reading a data object is controlled using the relative trust values of subjects and objects. We describe one aspect of the SAC model that supports the confidentiality of read-only data objects. We performed simulation studies using traces from the flickr.com social network to evaluate the performance of some key primitives used in the SAC design.