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المؤلفTantawy, Ashraf
المؤلفErradi, Abdelkarim
المؤلفAbdelwahed, Sherif
تاريخ الإتاحة2023-04-10T09:10:06Z
تاريخ النشر2019
اسم المنشور2019 4th International Conference on System Reliability and Safety, ICSRS 2019
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1109/ICSRS48664.2019.8987635
معرّف المصادر الموحدhttp://hdl.handle.net/10576/41835
الملخصLayer of Protection Analysis (LOPA) is the most commonly used approach for quantitative safety risk assessment in the process control industry to protect a Cyber- Physical System (CPS) from accidental hazards-causing failures. The LOPA approach does not take into account failures due to intentional security attacks, hence yielding partially-protected systems. With security breaches on the rise for critical infrastructure, the LOPA methodology needs to be revisited to verify its underlying assumptions and synchronize safety and security lifecycles. In this paper, we study the LOPA methodology and identify the key mathematical assumptions that are violated in the presence of security attacks. We present a mathematical formulation for a modified LOPA to incorporate the probability of a security attack on a CPS and apply it to a testbed case study. 2019 IEEE.
راعي المشروعThis research was made possible by NPRP 9-005-1-002 grant from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the authors.
اللغةen
الناشرInstitute of Electrical and Electronics Engineers Inc.
الموضوعCPS
Cyber Physical System
HAZOP
IEC 61511
LOPA
Risk Assessment
Safety
SCADA
Security
SIL
SIS
العنوانA Modified Layer of Protection Analysis for Cyber-Physical Systems Security
النوعConference Paper
الصفحات94-101
dc.accessType Abstract Only


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