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Computer intrusion detection through EWMA for autocorrelated and uncorrelated data

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3 Author(s)
Nong Ye ; Inf. & Syst. Assurance Lab., Arizona State Univ., Tempe, AZ, USA ; S. Vilbert ; Qiang Chen

Reliability and quality of service from information systems has been threatened by cyber intrusions. To protect information systems from intrusions and thus assure reliability and quality of service, it is highly desirable to develop techniques that detect intrusions. Many intrusions manifest in anomalous changes in intensity of events occurring in information systems. In this study, we apply, test, and compare two EWMA techniques to detect anomalous changes in event intensity for intrusion detection: EWMA for autocorrelated data and EWMA for uncorrelated data. Different parameter settings and their effects on performance of these EWMA techniques are also investigated to provide guidelines for practical use of these techniques.

Published in:

IEEE Transactions on Reliability  (Volume:52 ,  Issue: 1 )