5 May 2017 Vulnerability survival analysis: a novel approach to vulnerability management
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Abstract
Computer security vulnerabilities span across large, enterprise networks and have to be mitigated by security engineers on a routine basis. Presently, security engineers will assess their “risk posture” through quantifying the number of vulnerabilities with a high Common Vulnerability Severity Score (CVSS). Yet, little to no attention is given to the length of time by which vulnerabilities persist and survive on the network. In this paper, we review a novel approach to quantifying the length of time a vulnerability persists on the network, its time-to-death, and predictors of lower vulnerability survival rates. Our contribution is unique in that we apply the cox proportional hazards regression model to real data from an operational IT environment. This paper provides a mathematical overview of the theory behind survival analysis methods, a description of our vulnerability data, and an interpretation of the results.
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Katheryn A. Farris, Katheryn A. Farris, John Sullivan, John Sullivan, George Cybenko, George Cybenko, } "Vulnerability survival analysis: a novel approach to vulnerability management", Proc. SPIE 10184, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security, Defense, and Law Enforcement Applications XVI, 101840H (5 May 2017); doi: 10.1117/12.2266378; https://doi.org/10.1117/12.2266378
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