This paper investigates insider threat in relational database systems. It discusses the problem of inferring unauthorized information by insiders and proposes methods to prevent such threats. The paper defines various types of dependencies as well as constraints on dependencies that may be used by insiders to infer unauthorized information. It introduces the constraint and dependency graph (CDG) that represents dependencies and constraints. In addition, CDG shows the paths that insiders can follow to acquire unauthorized knowledge.

Insider threat mitigation- preventing unauthorized knowledge acquisition.pdf

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