Facility for detecting intruders and suspect callers in a comput

Details Facility for detecting intruders and suspect callers in a comput Facility for detecting intruders and suspect callers in a comput

1994-06-08

1997-04-15

Beausoliel, Jr., Robert W.

39518302, 395 282, G06F 1100

Patent

active

056218893

ABSTRACT:
A facility for detecting intrusions and suspect users in a computer installation, and a security system incorporating such a facility that makes use of surveillance data relating to the operation of the installation. The facility includes elements for modelling the computer installation, its users, and their respective behavior with the help of a semantic network; elements for comparing the modellized behavior of the system and of its users relative to modellized normal behavior; elements for interpreting observed anomalies in terms of intrusions and of intrusion hypothesis; elements for interpreting observed intrusion hypotheses and intrusions in order to indicate them and enable restraint actions to be prepared. Elements are provided to evaluate the degree of suspicion of users. The elements co-operate with one another for the purpose of providing information.

REFERENCES:
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Debar et al "A Neural Network Component for an Intrusion Detection System" Security & Privacy, 1992 IEEE Symposium, pp. 240-250.
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Bauer et al "NIDX--An Expert System for Real Time Network Intrusion Detection" Computer Networking Symposium, 1988 pp. 98-106.
Porras et al "Penetration State Transition Analysis A Role-Based Intrusion Detection Approach" Computer Security App. Conf. 1992 IEEE pp. 220-229.
S. R. Snapp et al, "A System for Distributed Intrusion Detection", Digest of Papers Compcon Spring 91-IEEE, Mar. 1, 1991, pp. 170-176.
T. F. Lunt et al, "A Prototype Real-Time Intrusion-Detection Expert System", Proceedings 1988 IEEE Symposium on Security and Privacy, IEEE, Apr.18-21, 1988, pp. 59-66.

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