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An Approach to a Quantitative Evaluation of U-Service Survivability Reflecting Cyber-terrorism  

Kim, Sung-Ki (선문대학교 IT교육학부)
Publication Information
Convergence Security Journal / v.11, no.6, 2011 , pp. 67-72 More about this Journal
Abstract
A system that provides a ubiquitous service is a networked system that has to overcome their circumstances that the service survivability is weak. the survivability of a networked system is defined as an ability of the system that can offer their services without interruption, regardless of whether components comprising the system are under failures, crashes, or physical attacks. This paper presents an approach that end users can obtain a quantitative evaluation of U-service survivability to reflect intended cyber attacks causing the networked system to fall into byzantine failures in addition to the definition of the survivability. In this paper, a Jini system based on wireless local area networks is used as an example for quantitative evaluation of U-service survivability. This paper also presents an continuous time markov chain (CTMC) Model for evaluation of survivability of U-service that a Jini system provides, and an approach to evaluate the survivability of the U-service as a blocking probability that end users can not access U-services.
Keywords
survivability; ubiquitous service; byzantine failure; cyber attack; Markov Chain Model;
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