Organizing Access Privileges: Maximizing the Availability and Mitigating the Threat of Insiders´ Knowledgebase

This paper demonstrates how to mitigate insider threat in relational databases. Basically, it shows how the execution of the same operations in different orders poses different levels of threat. The model presented in this paper organizes accesses to data items in some sequence so that the expected threat is minimized to the lowest level. In addition, it increases the availability of data items. That is, instead of preventing insiders from getting access to some data items because of possible threat, the proposed approach reorganizes insiders´ independent requests so that they can access those data when it is determined that there is little or no threat .