Ehab ElSalamouny

I am currently an assistant professor in the faculty of computers and informatics, Suez Canal University, Egypt.

From November 2012 to November 2013, I was a postdoctoral researcher in the group CIDRE, at Supélec, Rennes. In this position, I was participating to the research project CAPPRIS (Collaborative Actions on the Protection of Privacy Rights in the Information Society), which is funded by INRIA.

From November 2011 to November 2012, I was a postdoctoral researcher in the group Comète, at LIX, École Polytechnique, Paris. My position was fully supported by INRIA.

Until April 2011, I was a PhD student at the School of Electronics and Computer Science (ECS) in the University of Southampton under the supervision of Prof. Vladimiro Sassone. In my PhD study, I researched models of trust and reputation in distributed systems. I also studied some anonymity protocols and their possible extensions to incorporate trust information.

In general, my research centres on modern mathematically grounded approaches to maintain security in distributed systems. In particular, I am interested in using the mathematical tools provided by the probability and information theories to model uncertainty in global networks. This interest covers formalising and using the notion of "computational trust" in computer security, and also modern probabilistic and information theoretic approaches to assess privacy, and quantify information leakage in security protocols.

Research interests

• Probabilistic models of trust and reputation
• Anonymity protocols
• Differential Privacy
• Quantifying location privacy
• Quantitative Information Flow

Publications

• Chatzikokolakis, K., ElSalamouny, E., Palamidessi, C.,
  Efficient utility improvement for location privacy,
  Proceedings on Privacy Enhancing Technologies, 2017(4) (2017) 308-328.


• ElSalamouny, E., Gambs, S.,
  Optimal noise functions for location privacy on continuous regions,
  International Journal of Information Security, (2017).


• ElSalamouny, E., Gambs, S.,
  Differential privacy models for location-based services,
  Transactions on Data Privacy 9(1) (2016) 15–48.


• ElSalamouny, E., Chatzikokolakis, K., Palamidessi, C.,
  Generalized Differential Privacy: Regions of Priors That Admit Robust Optimal Mechanisms,
  In: Horizons of the Mind. A Tribute to Prakash Panangaden, Volume 8464 of LNCS. Springer (2014) 292–318.


• ElSalamouny, E., Sassone, V.,
  An HMM-based reputation model,
  1st International Conference on Advances in Security of Information and Communication Networks, SecNet 2013, Cairo, Egypt, September 3-5, 2013, Springer (2013) 111--121.


• ElSalamouny, E., Chatzikokolakis, K. and Palamidessi, C.,
  A differentially private mechanism of optimal utility for a region of priors,
  2nd International Conference on Principles of Security and Trust, POST 2013, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2013, Rome, Italy, March 16-24, 2013, Springer (2013) 41--62.


• ElSalamouny, E., Chatzikokolakis, K. and Palamidessi, C.,
  Identifying optimal differential private mechanisms for different users,
  Atelier Protection de la Vie Privée (APVP 2012), 3ième édition, Ile de Groix, France, 18-20 June 2012 (short paper).


• Sassone, V., ElSalamouny, E. and Hamadou, S.,
  Trust in Crowds: probabilistic behaviour in anonymity protocols,
  5th International Symposium on Trustworthly Global Computing, TGC 2010, Munich, Germany, February 24-26, 2010, Springer (2010) 88--102.


• ElSalamouny, E., Sassone, V. and Nielsen, M.,
  HMM-based Trust Model,
  6th International Workshop on Formal Aspects in Security and Trust, FAST 2009, Eindhoven, The Netherlands, November 5-6, 2009, Springer (2010) 21--35.


• Hamadou, S., Palamidessi, C., Sassone, V. and ElSalamouny, E.,
  Probable innocence in the presence of independent knowledge,
  6th International Workshop on Formal Aspects in Security and Trust, FAST 2009, Eindhoven, The Netherlands, November 5-6, 2009, Springer (2010) 141--156.


• ElSalamouny, E., Krukow, K. and Sassone, V.,
  An analysis of the exponential decay principle in probabilistic trust models,
  Theoretical Computer Science 410(41) (2009) 4067–4084.

Dissertations

• Ehab ElSalamouny,
  Probabilistic trust models in network security,
  PhD thesis, University of Southampton, Southampton, UK, 2011

Contacts

• es (at) ci.suez.edu.eg
• Ehab ElSalamouny
  Faculty of Computers and Informatics
  Suez Canal University
  Ismailia, Egypt