Risk-Based Security Decisions Under Uncertainty

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Provided by: IBM
Topic: Security
Format: PDF
In this paper, the authors address the making of security decisions, such as access-control decisions or spam filtering decisions, under uncertainty, when the benefit of doing so outweighs the need to absolutely guarantee these decisions are correct. For instance, when there are limited, costly, or failed communication channels to a policy-decision-point. Previously, local caching of decisions has been proposed, but when a correct decision is not available, either a policy-decision-point must be contacted, or a default decision used. They improve upon this model by using learned classifiers of access control decisions.
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