A discussion on ‘Detection of intrusions in information systems by sequential change-point methods’ by Tartakovsky, Rozovskii, Blažek, and Kim |
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Authors: | Hock Peng Chan |
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Institution: | aIRISA/CNRS, Campus de Beaulieu, 35042 Rennes Cedex, France |
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Abstract: | Tartakovsky et al. provide us with, and should be thanked for, an illuminating introduction to the problems of detecting intrusions and other denial of services attacks, and a thorough discussion and analysis of the relevance of CUSUM-based change detection algorithms for this purpose.This discussion mainly addresses three issues: introducing a minimum change magnitude, adaptation and tuning of CUSUM algorithms, and processing binary quantized data. The influence of the adaptation in the NP-CUSUM algorithm on its performances is questioned. |
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Keywords: | Change-point detection CUSUM procedures Sequential tests Intrusion detection Denial of service |
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