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| This paper presents a new approach to representing and detecting computer penetrations in real-time. The approach, called state transition analysis, models penetrations as a series of state changes that lead from an initial secure state to a target compromised state. State transition diagrams, the graphical representation of penetrations, identify(More)
iii This page is intentionally left blank iv c Copyright b y Koral Ilgun 1992 v This page is intentionally left blank vi ABSTRACT Ustat A Real-time Intrusion Detection System for UNIX by Koral Ilgun This thesis presents the design and implementation of a real-time intrusion detection tool called Ustat, a State Transition Analysis Tool for UNIX. The original(More)
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