Masquerade detection using profile hidden Markov models


In this paper, we consider the problem of masquerade detection, based on user-issued UNIX commands. We present a novel detection technique based on profile hidden Markov models (PHMMs). For comparison purposes, we implement an existing modeling technique based on hidden Markov models (HMMs). We compare these approaches and show that, in general, our PHMM… (More)
DOI: 10.1016/j.cose.2011.08.003

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