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Preserving the availability and integrity of networked computing systems in the face of fast-spreading intrusions requires advances not only in detection algorithms, but also in automated response techniques. In this paper, we propose a new approach to automated response called the Response and Recovery Engine (RRE). Our engine employs a game-theoretic response strategy against adversaries modeled...
This paper develops an equation that provides a good approximation of the expected number of double-disk failures (data losses) in an (N+1) redundant array of inexpensive disks (RAID) as a function of time. This paper includes the statistical bases for the equation, sources of error and inaccuracies due to approximations, and limitations of its use. The equation is simple and can be evaluated using...
MAP queueing networks are recently proposed models for performance assessment of enterprise systems, such as multi-tier applications, where workloads are significantly affected by burstiness. Although MAP networks do not admit a simple product-form solution, performance metrics can be estimated accurately by linear programming bounds, yet these are expensive to compute under large populations. In...
Non deterministic Repairable Fault Trees (NdRFT) are a recently proposed modeling formalism for the study of optimal repair strategies: they are based on the widely adopted Fault Tree formalism, but in addition to the failure modes, NdRFTs allow to define possible repair actions. In a previous pa per the formalism has been introduced together with an analysis method and a tool allowing to automatically...
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