Sigint Solutions

National Projects


pro logs4 aspida


Project Name: ASPIDA - Security in Sensor Networks

Research Programme: PENEK - Programme Young Researcher of Cyprus

Funded by: Cyprus Research Promotion Foundation 

Duration: 48 months (29.12.2006 – 30.12.2010)


  • Sigint Solutions Ltd
  • University of Cyprus
  • University of Piraeus


Sensor networks have been developed rapidly the last years and they promise to be one of the basic infrastructures to support ambient intelligence. Currently, sensors are used in a wide spectrum of applications (e.g. military, medical, environmental) where they manage sensitive information. These applications require protection of the confidentiality, integrity and availability of data that is exchanged through the network and/or is stored locally on the sensors. However, the provided security is considerably limited by sensors' characteristics such as the limited energy, the small size of local memory and the lack of a universal identity.

Currently, most of the efforts and studies are concentrated around specific areas, ignoring a combination of security issues. Therefore, the need for designing a multi-layer security architecture for sensor networks is arised. The architecture will have to take into consideration not only the protection of sensor nodes but the security of the entire network.

The objective of this project is to design and develop a prototype of a security layer that will offer security services to sensor nodes. Security will be offered as a unified component that will be adapted based on the trustworthiness of the environment it will be implemented. The proposed layer will be evaluated against the energy and computational power needs, and if it is judged necessary hierarchical topologies will be investigated to include sensor nodes with enhanced resources. These nodes (e.g. team leaders) will undertake operations which have high resource requirements, supporting the effectiveness of the provided security. The designing of an appropriate security policy will further support the multi-layer security architecture. In addition, new security solutions will be proposed taking into consideration the restrictions of sensor nodes and giving emphasis on the interoperability and robustness of sensor nodes.

The innovation of this research work lies on the provision of a complete set of security services that will be adaptable on the characteristics of sensor nodes, the security requirements and the data that it is managed by the application. The generality of the architecture will support different applications, hiding the complexity of different security solutions under a unified frame.

In ASPIDA, a wireless sensor project, the company is contributing at the physical and network layer, with radio planning, routing, and security activities.


[1]Stavrou, E. and Pitsillides, A. Security Evaluation Methodology for Intrusion Recovery Protocols in Wireless Sensor Networks, 15th ACM International Conference on Modeling, Analysis  and Simulation of Wireless and Mobile Systems, MSWiM’ 12, October 21–25, 2012, Paphos, Cyprus

[2]Stavrou, E. and Pitsillides, A. Vulnerability assessment of intrusion recovery countermeasures in wireless sensor networks, 16th IEEE Symposium on Computers and Communications (ISCC), pp. 706-712, June 28 - July 1, 2011, Kerkyra, Greece

[3]Stavrou, E. and Pitsillides, A. 2011. Combating persistent adversaries in wireless sensor networks using directional antennas, 18th International Conference on Telecommunications (ICT), pp. 433-438, May 8 – 11, 2011, Ayia Napa, Cyprus

[4]Stavrou, E. and Pitsillides, A. A Survey on Secure Multipath Routing Protocols in WSNs, Computer Networks Journal, Elsevier, 2010, vol. 54, no. 13, pp. 2215- 2238

[5]Stavrou, E., Pitsillides, A., Hadjichristofi, G., and Hadjicostis, C. Security in future mobile sensor networks - Issues and Challenges, International Conference on Security and Cryptography, July 26-28, 2010, Athens, Greece