Document Details

Document Type : Thesis 
Document Title :
USING FAULT TREES FOR MODELING, ANALYSIS AND UNCERTAINTY QUANTIFICATION OF COMPUTER SYSTEM SECURITY
إستخدام أشجار الأخطاء للنمذجة والتحليل وتكمية الريبة في نظم أمان المحساب
 
Subject : Faculty of Engineering 
Document Language : Arabic 
Abstract : A new trend in the study of computer system security is to exploit similarities between reliability and security to develop quantitative measures for "operational security". In particular, the fault-tree model, a traditional reliability methodology used in the analysis and design of safety-critical systems, is now being considered also in the analysis and design of security systems. Sometimes, fault trees are unnecessarily renamed as attack-defense trees for this particular application. The present thesis constitutes an extended exploration of the possibility of using fault trees in the quantitative assessment of the effect of security breaches on a computer system. The thesis adapts of the fault-tree methodology of reliability engineering to the quantification of a variety of situations or aspects of the security exposure of computer systems. Next, it derives symbolic expressions for the top-event probability Q (for each of the aforementioned fault trees) in terms of the basic event probabilities q ⃗. Then, the thesis handles the doubly-stochastic problem of estimating uncertainty in the top-event probability in terms of the variances of the basic-event probabilities. Finally, the thesis obtains numerical estimates for the top-event probabilities and their variances and also for the importance ranking of the various breach events. 
Supervisor : Prof. Ali Mohammad Rushdi 
Thesis Type : Master Thesis 
Publishing Year : 1439 AH
2018 AD 
Added Date : Wednesday, May 30, 2018 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد أحمد القواسميAL Qwasmi, Mohammad AhmadResearcherMaster 

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 43421.pdf pdf 

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