Matrix correction method based information system security assessment model

YANG Hongyu; ZHANG Xugao; LU Weili

doi:10.16511/j.cnki.qhdxxb.2020.25.009

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Journal of Tsinghua University(Science and Technology) ›› 2020, Vol. 60 ›› Issue (5) : 393-401. DOI: 10.16511/j.cnki.qhdxxb.2020.25.009

SPECIAL SECTION:VULNERABILITY ANALYSIS AND RISK ASSESSMENT

Matrix correction method based information system security assessment model

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Abstract

The accuracy of existing information system security assessments is affected by the expert evaluation preferences. This paper presents a matrix correction method (MCM) based on information system security situation assessment model (ISSSAM). The system uses a modified interval number judgment matrix to reflect the relative importance of various indicators to improve the objectivity of the indicator layer weight vector. Then, an entropy weight based cloud is used to quantify the criterion layer and the target layer security situation index to grade the system security level. Tests on a departure control system (DCS) verify the model validity and demonstrate that the evaluation stability of this model is better than the entropy weight coefficient method and the traditional analytic hierarchy process (AHP).

Key words

security situation / index system / interval number judgment matrix / entropy weight based cloud

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YANG Hongyu, ZHANG Xugao, LU Weili. Matrix correction method based information system security assessment model[J]. Journal of Tsinghua University(Science and Technology). 2020, 60(5): 393-401 https://doi.org/10.16511/j.cnki.qhdxxb.2020.25.009

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