I am research assistant at LERSAIS (Laboratory for Education and Research on Security Assured Information Systems). I am broadly interested in Information Security, Privacy, and Trust. Here are some of my more specific areas of interest:

I am mainly involved in the following project:

Publications

Journal Papers

[1] A. Masoumzadeh and J. Joshi, ``Ontology-based access control for social network systems,'' International Journal of Information Privacy, Security and Integrity, vol. 1, no. 1, pp. 59-78, Jan. 2011.
[2] Y. Jung, M. Kim, A. Masoumzadeh, and J. B. D. Joshi, ``A survey of security issue in multi-agent systems,'' Artificial Intelligence Review, pp. 1-22, Jun. 2011.

Journal Papers Under Review

[3] A. Masoumzadeh and J. Joshi, ``Preserving Structural Properties in Edge-Perturbing Anonymization Techniques for Social Networks,'' IEEE Transactions on Dependable and Secure Computing (major review).

Conference and Workshop Papers

[4] A. Masoumzadeh and J. Joshi, ``Anonymizing geo-social network datasets,'' in Proc. 4th ACM SIGSPATIAL Int'l Workshop on Security and Privacy in GIS and LBS (SPRINGL '11), ser. SPRINGL '11. New York, NY, USA: ACM, 2011, pp. 25-32.
[5] N. Baracaldo, A. Masoumzadeh, and J. Joshi, ``A secure, constraint-aware role-based access control interoperation framework,'' in Proc. 5th Int'l Conference on Network and System Security (NSS '11). IEEE, 2011, pp. 200-207.
[6] A. Masoumzadeh and J. Joshi, ``An Alternative Approach to k-Anonymity for Location-Based Services,'' in Proc. 8th Int'l Conference on Mobile Web Information Systems, ser. Procedia Computer Science, vol. 5, Jan. 2011, pp. 522-530.
[7] A. Masoumzadeh and J. Joshi, ``Preserving structural properties in anonymization of social networks,'' in Proc. 6th Int'l Conference on Collaborative Computing: Networking, Applications and Worksharing (CollaborateCom '10). IEEE, Oct. 2010, pp. 1-10.
[8] A. Masoumzadeh and J. Joshi, ``OSNAC: An Ontology-based Access Control Model for Social Networking Systems,'' in Proc. 2nd IEEE Int'l Conference on Information Privacy, Security, Risk and Trust (PASSAT '10), Aug. 2010, pp. 751-759.
[9] A. Masoumzadeh, J. Joshi, and H. A. Karimi, ``LBS (k, T)-anonymity: a spatio-temporal approach to anonymity for location-based service users,'' in Proc. 17th ACM SIGSPATIAL Int'l Conference on Advances in Geographic Information Systems (GIS '09). New York, NY, USA: ACM, 2009, pp. 464-467.
[10] A. Masoumzadeh and J. B. D. Joshi, ``PuRBAC: Purpose-aware role-based access control,'' in Proc. 3rd Int'l Symposium on Information Security, ser. LNCS, vol. 5332. Springer, Nov. 2008, pp. 1104-1121.
[11] Y. Jung, A. Masoumzadeh, J. B. D. Joshi, and M. Kim, ``RiBAC: Role Interaction Based Access Control Model for Community Computing Collaborative Computing: Networking, Applications and Worksharing,'' in Proc. 4th Int'l Conference on Collaborative Computing: Networking, Applications and Worksharing (CollaborateCom '08), ser. LNICS, E. Bertino and J. B. D. Joshi, Eds., vol. 10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009, pp. 304-321.
[12] A. Masoumzadeh, M. Amini, and R. Jalili, ``Conflict Detection and Resolution in Context-Aware Authorization,'' in Proc. 3rd IEEE Int'l Symposium on Security in Networks and Distributed Systems, 2007, pp. 505-511.
[13] A. Masoumzadeh, M. Amini, and R. Jalili, ``Context-Aware Provisional Access Control,'' in Proc. 2nd Int'l Conference on Information Systems Security, ser. LNCS, vol. 4332. Springer Verlag, 2006, pp. 132-146.

Theses

[14] A. Masoumzadeh, ``Context-Aware Provisional Access Control,'' Master's thesis, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran, 2007.
[15] A. Masoumzadeh and S. H. Shahri, ``Using Reinforcement Learning in Control Applications,'' Department of Computer Engineering, Ferdowsi University, Mashhad, Iran, Tech. Rep., 2004.

Other Publications

[16] A. Masoumzadeh and J. Joshi, ``Anonymizing Geo-Social Network Datasets,'' MODAP (Mobility, Data Mining, and Privacy) Newsletter, vol. 3, no. 2, p. 3, Nov. 2011.