Bio-inspired enhancement of reputation systems for intelligent environments

Providing security to the emerging field of ambient intelligence will be difficult if we rely only on existing techniques, given their dynamic and heterogeneous nature. Moreover, security demands of these systems are expected to grow, as many applications will require accurate context modeling. In this work we propose an enhancement to the reputation systems traditionally deployed for securing these systems. Different anomaly detectors are combined using the immunological paradigm to optimize reputation system performance in response to evolving security requirements. As an example, the experiments show how a combination of detectors based on unsupervised techniques (self-organizing maps and genetic algorithms) can help to significantly reduce the global response time of the reputation system. The proposed solution offers many benefits: scalability, fast response to adversarial activities, ability to detect unknown attacks, high adaptability, and high ability in detecting and confining attacks. For these reasons, we believe that our solution is capable of coping with the dynamism of ambient intelligence systems and the growing requirements of security demands

Bio-Inspired Mobility In Environment Aware Wireless Sensor Networks*

Today's wire/ess sensors act as information agents, our eyes and ears, for all types of app/ications, especially in inaccessib/e regions. But these sensors are resource-constrained devices; the key challenges remain in exp/oiting their /imited time-/ife. A crucia / factor to achieve this is to deve/op appropriate mobi/ity models that wou/d assure high information coverage of the desired dep/oyed region within the area. We propose a bi%gically inspired mobi/ity mode / to direct sensors ' movement towards the target area. We show the benefits acquired in terms of data coverage and efficient resourcesuti/ization. 1