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This paper considers the estimation of reliability and availability of intrusion-tolerant systems subject to non-detectable intrusions. Our motivation comes from the observation that typical techniques of intrusion tolerance may in certain circumstances worsen the non-functional properties they were meant to improve (e.g., dependability). We start by modeling attacks as adversarial efforts capable...
We propose a novel formal method based technique for analyzing the system attributes of availability and complexity during the design phase of systems engineering. These attributes are demonstrated by carrying out design simulation on existing and new safety-critical systems. The analysis on these systems validate the capability of the proposed technique for determining the availability and complexity...
Software systems suffer one basic problem: They are frequently adapted and updated due to changes in requirements and new bugs surfacing. The result of these adaptations is lower availability and missing state of the program. In addition, applying these adaptations requires professional developers which inflict high costs on the organization. In this article, we introduce several methods for adapting...
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