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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...
Due to the fact that software systems cannot be tested exhaustively, software systems must cope with residual defects at run-time. Local recovery is an approach for recovering from errors, in which only the defective parts of the system are recovered while the other parts are kept operational. To be efficient, local recovery must be aware of which component is at fault. In this paper, we combine a...
The interest in system survivability under a variety of attacks, faults or accidents has been on the rise in recent years and survivability is receiving increasing attention as a key property of the mission critical system. Distributed systems are vital for all and it is a critical task to make such systems secure and survive. Survivability in the presence of attacks or failures depends on three key...
High availability is a key requirement in mobile communication systems, especially, when it is used for mission-critical services such as public safety. A failure in the fixed network infrastructure can affect a large number of its users and risk loss of lives. The software applications that run the infrastructure and provide services to the mobile users according to some defined communication protocols...
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