Two state-based approaches to program-based anomaly detection

  • Authors:
  • C. C. Michael;A. Ghosh

  • Affiliations:
  • -;-

  • Venue:
  • ACSAC '00 Proceedings of the 16th Annual Computer Security Applications Conference
  • Year:
  • 2000

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Abstract

This paper describes two intrusion detection algorithms, and gives experimental results on their performance. The algorithms detect anomalies in execution audit data. One is a simply constructed finite-state machine, and the other monitors statistical deviations from normal program behavior. The performance of these algorithms is evaluated as a function of the amount of available training data, and they are compared to the well-known intrusion detection technique of looking for novel n-grams in computer audit data.