Yuan Cheng, Jaehong Park and Ravi Sandhu, An Access Control Model for Online Social Networks Using User-to-User Relationships. IEEE Transactions on Dependable and Secure Computing, 13(4): 424-436, July/August 2016. PDF

Jaehong Park, Ravi Sandhu and Yuan Cheng, A User-Activity-Centric Framework for Access Control in Online Social Networks. IEEE Internet Computing, 15(5): 62-65, September 2011. PDF
Yuan Cheng, Khalid Bijon and Ravi Sandhu, Extended ReBAC Administrative Models with Cascading Revocation and Provenance Support. In Proceedings 21th ACM Symposium on Access Control Models and Technologies (SACMAT), Shanghai, China, June 6-8, 2016, 10 pages. PDF

Yuan Cheng, Jaehong Park and Ravi Sandhu, Attribute-aware Relationship-based Access Control for Online Social Networks. In Proceedings 28th Annual IFIP WG 11.3 Working Conference on Data and Applications Security and Privacy (DBSec 2014), Vienna, Austria, July 14-16, 2014, 16 pages. (acceptance ratio 22/63 for full papers) PDF

Yuan Cheng, Jaehong Park and Ravi Sandhu, Preserving User Privacy from Third-party Applications in Online Social Networks. In Proceedings of the 2nd International Workshop on Privacy and Security in Online Social Media (PSOSM), Rio de Janeiro, Brazil, May 14, 2013, 6 pages. (Runner-up of The Best Paper Award) PDF

Yuan Cheng, Dang Nguyen, Khalid Bijon, Ram Krishnan, Jaehong Park and Ravi Sandhu, Towards Provenance and Risk-awareness in Social Computing. In Proceedings of the First International Workshop on Secure and Resilient Architectures and Systems, Minneapolis, Minnesota, September 19, 2012, 6 pages. PDF

Yuan Cheng, Jaehong Park and Ravi Sandhu, Relationship-based Access Control for Online Social Networks: Beyond User-to-User Relationships. In Proceedings 4th IEEE International Conference on Information Privacy, Security, Risk and Trust (PASSAT), Amsterdam, Netherlands, September 3-5, 2012, 10 pages. (Winner of The Best Paper Award) PDF

Yuan Cheng, Jaehong Park and Ravi Sandhu, A User-to-User Relationship-based Access Control Model for Online Social Networks. In Proceedings 26th Annual IFIP WG 11.3 Working Conference on Data and Applications Security and Privacy (DBSec 2012), Paris, France, July 11-13, 2012, 18 pages. (acceptance ratio 17/50 for full papers) PDF

Jaehong Park, Ravi Sandhu and Yuan Cheng, ACON: Activity-Centric Access Control for Social Computing. In Proceedings 5th International Conference on Availability, Reliability and Security (ARES), Vienna, Austria, August 22-26, 2011, 6 pages. PDF

Jaehong Park, Yuan Cheng and Ravi Sandhu, Towards A Framework for Cyber Social Status Based Trusted Open Collaboration. In Proceedings of the 5th IEEE International Workshop on Trusted Collaboration (TrustCol 2010), Chicago, Illinois, October 9, 2010, 8 pages. PDF