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- W2890598156 abstract "Cyber adversaries employ a variety of malware and exploit to attack computer systems. Despite the prevalence of markets for malware and exploit kits, existing paradigms that model such cyber-adversarial behaviour do not account for sequential application or “chaining” of attacks, that take advantage of the complex and interdependent nature of exploits and vulnerabilities. As a result, it is challenging for security professionals to develop defensive-strategies against threats of this nature. This chapter takes the first steps toward addressing this need, based on a framework that allows for the modelling of sequential cyber-attacks on computer systems, taking into account complex interdependencies between vulnerabilities and exploits. The framework identifies the overall set of capabilities gained by an attacker through the convergence of a simple fixed-point operator. We then turn our attention to the problem of determining the optimal/most effective strategy (with respect to this model) that the defender can use to block the attacker from gaining certain capabilities and find it to be an NP-complete problem. To address this complexity, we utilize an A*-based approach and develop an admissible heuristic. We provide an implementation and show through a suite of experiments using actual vulnerability data that this method performs well in practice for identifying defensive courses of action in this domain." @default.
- W2890598156 created "2018-09-27" @default.
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- W2890598156 date "2018-01-01" @default.
- W2890598156 modified "2023-09-27" @default.
- W2890598156 title "Defending Against Chained Cyber-Attacks by Adversarial Agents" @default.
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- W2890598156 doi "https://doi.org/10.1007/978-3-319-92624-7_8" @default.
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