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The attack graph, a typical model-based method, is widely used in the field of network security evaluation. The biggest disadvantage of attack graph method is its exponential growth of the state space. This paper presents an efficient algorithm based on the malefactorpsilas access level vector in every host of the network to generate a reduced attack graph in polynomial compute complexity. In this...
Computer system security evaluation by using mean time-to-compromise criteria is presented in this paper. The outcome of the attack highly depends on the attacker skill level. The attacker skill level distribution must be estimated, normal skill level distribution in the skill group is suggested in the model. The article concludes with simulation results and evaluation of the chosen attacker skill...
Zero-day attacks - especially those that hide the attack exploit by using code obfuscation and encryption - remain a formidable challenge to existing network defenses. Many techniques have been developed that can address known attacks and similar new attacks that may arise in the future. Some methods, like Earlybird and Polygraph, focus on string-based content prevalence in payloads; others focus...
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