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A Novel System-Theoretic Matrix-Based Approach to Analysing Safety and Security of Cyber-Physical Systems

Lin-Shen Liew, Giedre Sabaliauskaite Orcid Logo, Nandha Kumar Kandasamy Orcid Logo, Choong-Yew William Wong

Telecom, Volume: 2, Issue: 4, Pages: 536 - 553

Swansea University Author: Giedre Sabaliauskaite Orcid Logo

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DOI (Published version): 10.3390/telecom2040030

Abstract

Cyber-Physical Systems (CPSs) are getting increasingly complex and interconnected. Consequently, their inherent safety risks and security risks are so intertwined that the conventional analysis approaches which address them separately may be rendered inadequate. STPA (Systems-Theoretic Process Analy...

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Published in: Telecom
ISSN: 2673-4001
Published: MDPI AG 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61834
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Abstract: Cyber-Physical Systems (CPSs) are getting increasingly complex and interconnected. Consequently, their inherent safety risks and security risks are so intertwined that the conventional analysis approaches which address them separately may be rendered inadequate. STPA (Systems-Theoretic Process Analysis) is a top-down hazard analysis technique that has been incorporated into several recently proposed integrated Safety and Security (S&S) analysis methods. This paper presents a novel methodology that leverages not only STPA, but also custom matrices to ensure a more comprehensive S&S analysis. The proposed methodology is demonstrated using a case study of particular commercial cloud-based monitoring and control system for residential energy storage systems.
Keywords: cyber-physical system; hazard analysis; safety analysis; security analysis; STPA; STAMP; FMEA; STRIDE; matrix
College: Faculty of Science and Engineering
Funders: This work was supported in part by the National Research Foundation (NRF), Prime Minister’s Office, Singapore, under its National Cybersecurity R&D Programme (NRF2018-NCR003- 0018) and administered by the Energy Market Authority (EMA) Singapore.
Issue: 4
Start Page: 536
End Page: 553