A discussion on ‘Detection of intrusions in information systems by sequential change-point methods’ by Tartakovsky, Rozovskii, Blažek, and Kim

The discussion focuses on issues arising in practical applications of the CUSUM procedures developed by Tartakovsky et al. to detect changes in multichannel sensor systems. These issues are illustrated with a data set from the MIT Lincoln Laboratory that is used to estimate the parameters of procedures for detecting denial-of-service attacks.