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When a computer program requires legitimate access to confidential data, the question arises whether such a program may illegally reveal sensitive information. This paper proposes a policy model to specify what information flow is permitted in a computational system. The security definition, which is based on a general notion of information lattices, allows various representations of information to...
Critical Infrastructures (CIs) play crucial roles in modern societies and our reliance on their proper functioning even in the face of accidental failures and deliberate targeted attacks makes their protection of paramount importance. A notable characteristic of CIs is their interdependencies that may exist at many levels and facets of the infrastructure, and which may sometimes lead to unforeseen...
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