Resilience analysis of cyber‐physical systems: A review of models and methods
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Author / Producer
Date
2023
Publication Type
Journal Article
ETH Bibliography
yes
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Abstract
Cyber-physical systems (CPSs) are monitored and controlled by a computing andcommunicating core. This cyber layer enables better management of the controlledsubsystem, but it also introduces threats to the security and protection of CPSs, asdemonstrated by recent cyberattacks. The resulting governance and policy emphasison cybersecurity is reflected in the academia by a vast body of literature. In this arti-cle, we systematize existing knowledge on CPS analysis. Specifically, we focus onthe quantitative assessment of CPSs before and after the occurrence of a disruption.Through the systematic analysis of the models and methods adopted in the literature,we develop a CPS resilience assessment framework consisting of three steps, namely,(1) CPS description, (2) disruption scenario identification, and (3) resilience strategyselection. For each step of the framework, we suggest established methods for CPSanalysis and suggest four criteria for method selection. The framework proposes a stan-dardized workflow to assess the resilience of CPSs before and after the occurrence of adisruption. The application of the proposed framework is exemplified with reference toa power substation and associated communication network.The case study shows thatthe proposed framework supports resilience decision making by quantifying the effectsof the implementation of resilience strategies.
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Publication status
published
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Book title
Journal / series
Volume
43 (11)
Pages / Article No.
2359 - 2379
Publisher
Wiley-Blackwell
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
cyberattacks; cyber-physical systems; network security; recovery strategy; resilience assessment
Organisational unit
09452 - Sansavini, Giovanni / Sansavini, Giovanni