Overview of Quality of Security Service

We present an overview of our approach to managing security as a dimension of Quality of Service. Relative to traditional QoS attributes (e.g., jitter, deadline, latency) security has been handled rather statically and indirectly. We have developed a theory of Quality of Security Service and a related security-costing framework that supports extension of QoSS functionality to embrace existing and emerging security technologies. Our goals have been to leverage existing security mechanisms to improve availability, predictability, and efficiency, while maintaining, if not increasing security of the distributed system.