Bio-inspired enhancement of reputation systems for intelligent environments

Title: Bio-inspired enhancement of reputation systems for intelligent environments
Authors:Zorana Bankovic, David Fraga, José Manuel Moya, Juan Carlos Vallejo, Pedro Malagón, Alvaro Araujo, Juan Mariano de Goyeneche, Elena Romero, Javier Blesa, Daniel Villanueva y Octavio Nieto-Taladriz
Published in: Information Sciences
ISSN : 0020-0255
Date of Publication: July 2011
Digital Object Identifier : 10.1016/j.ins.2011.07.032

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.