Authorization Policies: Using Decision Support System for Context-Aware Protection of User´s Private Data

Nowadays privacy in ambient system is a real issue. Users will have to control their data more and more in the future. Current security systems don´t support a strong constraint: policy writers are non-technical users and not security experts. We propose in this paper to use Decision Support techniques and more specifically Multi-Criteria Decision Analysis in the process of authorization policy writing. This research area provides techniques to inform and assist non-technical users to write their own authorization policies following the paradigm of Attribute-Based Access Control.