Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Test Statistics for a Masquerader Detection System
A Comparison between Hidden Markov Model and Other Probabilistic Models
Takeshi OKAMOTOYuji WATANABEYoshiteru ISHIDA
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2003 Volume 16 Issue 2 Pages 61-69

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Abstract

The performance analysis is carried out for a masquerader detection system by a hidden Markov model (HMM). A Markov model and a probability distribution have been applied to many intrusion detection systems, however it is not clear to what extent the HMM improves the performance in detecting a masquerader, compared with other two probabilistic models. Statistics of these three models are compared and the advantage of the HMM for a masquerader detection system is clarified. Some implications useful in extending the other two probabilistic models to an HMM are also provided.

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