@InProceedings{arnes06:hidden_markov, author = {Andre Arnes and Fredrik Valeur and Giovanni Vigna and Richard Kemmerer}, title = {{Using Hidden Markov Models to Evaluate the Risks of Intrusions: System Architecture and Model Validation}}, booktitle = {Proceedings of the International Symposium on Recent Advances in Intrusion Detection (RAID)}, year = 2006, address = {Hamburg, Germany}, month = {September} }