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Intrusion detection is an appealing approach to improving the security of systems. It involves the runtime gathering of data from system operations, and the subsequent analysis of the data. There are three different kinds of detection models: anomaly detection, misuse detection and specification-based intrusion detection. Anomaly detection compares characteristics of the system with normal behavior profiles and an alert is reported if they do not match. Misuse detection compares current behavior to signatures of known attacks and re-ports an alert if there is a match. Specification-based intrusion detection monitors behavior of systems according to specifications, which describe desired functionality for security-critical entities. The goal of intrusion detection is to detect attacks with low false positive rate and low false negative rate.

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Format:PDFSize:782 KB
Date:Mar 2007
Pages:206

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