Information Assurance: Dependability and Security in Networked Systems
Information Assurance: Dependability and Security in Networked Systems
Reliability and survivability methodologies for next generation networks
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
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GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
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ASMTA'10 Proceedings of the 17th international conference on Analytical and stochastic modeling techniques and applications
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Security and Communication Networks
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We present a new approach to integrated security and dependability evaluation, which is based on stochastic modelling techniques. Our proposal aims to provide operational measures of the trustworthiness of a system, regardless if the underlying failure cause is intentional or not. By viewing system states as elements in a stochastic game, we can compute the probabilities of expected attacker behavior, and thereby be able to model attacks as transitions between system states. The proposed game model is based on a rewardand cost concept. A section of the paper is devoted to the demonstration of how the expected attacker behavior is affected by the parameters of the game. Our model opens up for use traditional Markov analysis to make new types of probabilistic predictions for a system, such as its expected time to security failure.