{"title":"A novel proactive and dynamic cyber risk assessment methodology","authors":"Pavlos Cheimonidis, Konstantinos Rantos","doi":"10.1016/j.cose.2025.104439","DOIUrl":null,"url":null,"abstract":"<div><div>In today’s operational environment, organizations face numerous cybersecurity challenges and risks. This paper presents a novel risk assessment methodology designed to assess cyber risks in a proactive and dynamic manner. Our approach gathers information from both the organization’s internal environment and cybersecurity-related open sources. It then converts the collected qualitative data into numerical form by applying predefined mapping rules, including categorical assignments and frequency-based quantification. These numerical values are then integrated with other quantitative data using a probabilistic method. Subsequently, all this information is integrated into a Bayesian network model to dynamically estimate the probability of success of a cyber attack. This probability, combined with the impact assessments of the organization’s assets, is used to provide risk estimations. By incorporating the Exploit Prediction Scoring System, our model is capable of delivering not only dynamic but also proactive risk assessments. To validate the effectiveness of the proposed methodology, we present a use case that demonstrates its application in assessing risk within a SCADA environment.</div></div>","PeriodicalId":51004,"journal":{"name":"Computers & Security","volume":"154 ","pages":"Article 104439"},"PeriodicalIF":4.8000,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computers & Security","FirstCategoryId":"94","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167404825001282","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
In today’s operational environment, organizations face numerous cybersecurity challenges and risks. This paper presents a novel risk assessment methodology designed to assess cyber risks in a proactive and dynamic manner. Our approach gathers information from both the organization’s internal environment and cybersecurity-related open sources. It then converts the collected qualitative data into numerical form by applying predefined mapping rules, including categorical assignments and frequency-based quantification. These numerical values are then integrated with other quantitative data using a probabilistic method. Subsequently, all this information is integrated into a Bayesian network model to dynamically estimate the probability of success of a cyber attack. This probability, combined with the impact assessments of the organization’s assets, is used to provide risk estimations. By incorporating the Exploit Prediction Scoring System, our model is capable of delivering not only dynamic but also proactive risk assessments. To validate the effectiveness of the proposed methodology, we present a use case that demonstrates its application in assessing risk within a SCADA environment.
期刊介绍:
Computers & Security is the most respected technical journal in the IT security field. With its high-profile editorial board and informative regular features and columns, the journal is essential reading for IT security professionals around the world.
Computers & Security provides you with a unique blend of leading edge research and sound practical management advice. It is aimed at the professional involved with computer security, audit, control and data integrity in all sectors - industry, commerce and academia. Recognized worldwide as THE primary source of reference for applied research and technical expertise it is your first step to fully secure systems.