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Power information systems security: modeling and quantitative evaluation

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3 Author(s)
Yan Hu ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Xiaorong Xie ; Yaozhong Xin

This paper presents a modeling language and a quantitative evaluation approach for the security of power information systems. We firstly design a security architecture design trace language to universally describe system structures, services, security policies, attack behaviors and countermeasures. Next an automated risk analysis algorithm is proposed to get attack traces of power information systems. Then, based on the concept of relative security degree, security architecture can be quantitatively evaluated. Finally, with a case study in a real power information system, the effectiveness of the presented approach is demonstrated. In practice, the approach can be employed for assessing various kinds of countermeasures, such as increasing a new security function, adjusting system self structure, and changing customer operation requirements. And it can greatly decrease the subjectivity of counter-measure selection.

Published in:

Power Engineering Society General Meeting, 2004. IEEE

Date of Conference:

6-10 June 2004