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Doctorate thesis defense of Nourhene Ellouze

Doctorate thesis defense on May 16th 2016 at 13H00 AM ,in Amphi II, Sup’Com.

Entitled : Securing and Investigating Critical Sensing Applications: Use of Energy Saving and Harvesting Techniques

Presented by : Nourhene Ellouze 



Pr. Adel Ghazel

SUP’Com School of Communication Engineering of Tunis.





Pr. Monia Turki

National School of Engineers of Tunis.


Dr. Lamia Chaari

Higher Institute of Computer Science and Multimedia of Sfax.



Dr. Slim Rekhis

SUP’Com School of Communication Engineering of Tunis.


Thesis Director

Pr. Noureddine Boudriga

SUP’Com School of Communication Engineering of Tunis.


Critical Sensing Applications (CSAs) refer to Information Technology solutions that are developed using Wireless Sensor Networks to monitor and control critical assets and detect suspicious events in harsh and hazardous environments. These applications allow providing important services for sustaining the national security, the economic well-being, and the public safety.

The present thesis addresses the design of secure and investigation-aware CSAs. In particular, three CSAs classes, which are water monitoring, healthcare, and national border security applications, are considered. The contribution of the thesis is four-fold.

First, we designed awater monitoring system allowing the provision of an accurate and uncostly localization. Such a system combines the use of mobile Wireless Sensor Networks and Radio Frequency Identification systems. A set of techniques allowing the accurate detection and localization of pollution and the minimization of energy consumption, were also developed.

Second, we identified and classified novel security attacks targeting CSAs. We considered the case of cardiac Implantable Medical Devices and the Wireless Sensor Networks for border surveillance. The impact of these classes of security attacks are discussed.

Third, we developeda set of energy-aware security mechanisms allowing the protection of CSAs against security attacks.We implemented an energy harvesting solution, which is based on RFID technology. We designed powerless authentication protocols suitable to CSA, and we provided a solution for the protection against battery depletion attacks.

Fourth, weaddressed the digital investigation of lethal security attacks on cardiac IMDs. A digital investigation system tailored to cardiac IMDs, which allows identifying and reconstructing potential attack scenarios that caused a patient’s death, was designed. A three-step methodology, together with the techniques implemented within each step, were also proposed.


Critical Sensing Applications, Wireless Sensor Network, Radio Frequency Identification systems, Security, Forensic investigation, Harvesting techniques.