A comprehensive survey on modeling of cyber‐physical systems

Author(s):  
Imen Graja ◽  
Slim Kallel ◽  
Nawal Guermouche ◽  
Saoussen Cheikhrouhou ◽  
Ahmed Hadj Kacem
Author(s):  
Ismail Butun ◽  
Patrik Österberg

Interfacing the smart cities with cyber-physical systems (CPSs) improves cyber infrastructures while introducing security vulnerabilities that may lead to severe problems such as system failure, privacy violation, and/or issues related to data integrity if security and privacy are not addressed properly. In order for the CPSs of smart cities to be designed with proactive intelligence against such vulnerabilities, anomaly detection approaches need to be employed. This chapter will provide a brief overview of the security vulnerabilities in CPSs of smart cities. Following a thorough discussion on the applicability of conventional anomaly detection schemes in CPSs of smart cities, possible adoption of distributed anomaly detection systems by CPSs of smart cities will be discussed along with a comprehensive survey of the state of the art. The chapter will discuss challenges in tailoring appropriate anomaly detection schemes for CPSs of smart cities and provide insights into future directions for the researchers working in this field.


Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1814
Author(s):  
Marta Chmiel ◽  
Mateusz Korona ◽  
Fryderyk Kozioł ◽  
Krzysztof Szczypiorski ◽  
Mariusz Rawski

The Internet of Things (IoT) is an emerging concept comprising a wide ecosystem of interconnected devices and services. These technologies collect, exchange and process data in order to dynamically adapt to a specific context. IoT is tightly bound to cyber-physical systems and, in this respect, has relevant security implications. A need for IoT security guidelines was identified by the industry in the early 2010s. While numerous institutions across the globe have proposed recommendations with a goal to help developers, distributors and users to ensure a secure IoT infrastructure, a strict set of regulations for IoT security is yet to be established. In this paper, we aim to provide an overview of security guidelines for IoT proposed by various organizations, and evaluate some of the existing technologies applied to ensure IoT security against these guidelines. We gathered recommendations proposed by selected government organizations, international associations and advisory groups, and compiled them into a set of the most common and important considerations, divided into eight categories. Then we chose a number of representative examples from IoT security technologies and evaluated them against these criteria. While none of the examined solutions fulfill all recommendations on their own, the existing technologies introduced by those solutions could be combined to create a design framework which satisfies all the requirements of a secure IoT device. Further research on this matter could be beneficial. To the best of our knowledge, this is the first comprehensive survey to evaluate different security technologies for IoT device security against the compilation of criteria based on existing guidelines.


2020 ◽  
Vol 12 (4) ◽  
pp. 65 ◽  
Author(s):  
Georgios Kavallieratos ◽  
Sokratis Katsikas ◽  
Vasileios Gkioulos

Safeguarding both safety and cybersecurity is paramount to the smooth and trustworthy operation of contemporary cyber physical systems, many of which support critical functions and services. As safety and security have been known to be interdependent, they need to be jointly considered in such systems. As a result, various approaches have been proposed to address safety and cybersecurity co-engineering in cyber physical systems. This paper provides a comprehensive survey of safety and cybersecurity co-engineering methods, and discusses relevant open issues and research challenges. Despite the extent of the existing literature, several aspects of the subject still remain to be fully addressed.


Author(s):  
Okolie S.O. ◽  
Kuyoro S.O. ◽  
Ohwo O. B

Cyber-Physical Systems (CPS) will revolutionize how humans relate with the physical world around us. Many grand challenges await the economically vital domains of transportation, health-care, manufacturing, agriculture, energy, defence, aerospace and buildings. Exploration of these potentialities around space and time would create applications which would affect societal and economic benefit. This paper looks into the concept of emerging Cyber-Physical system, applications and security issues in sustaining development in various economic sectors; outlining a set of strategic Research and Development opportunities that should be accosted, so as to allow upgraded CPS to attain their potential and provide a wide range of societal advantages in the future.


Author(s):  
Curtis G. Northcutt

The recent proliferation of embedded cyber components in modern physical systems [1] has generated a variety of new security risks which threaten not only cyberspace, but our physical environment as well. Whereas earlier security threats resided primarily in cyberspace, the increasing marriage of digital technology with mechanical systems in cyber-physical systems (CPS), suggests the need for more advanced generalized CPS security measures. To address this problem, in this paper we consider the first step toward an improved security model: detecting the security attack. Using logical truth tables, we have developed a generalized algorithm for intrusion detection in CPS for systems which can be defined over discrete set of valued states. Additionally, a robustness algorithm is given which determines the level of security of a discrete-valued CPS against varying combinations of multiple signal alterations. These algorithms, when coupled with encryption keys which disallow multiple signal alteration, provide for a generalized security methodology for both cyber-security and cyber-physical systems.


Author(s):  
A. V. Smirnov ◽  
T. V. Levashova

Introduction: Socio-cyber-physical systems are complex non-linear systems. Such systems display emergent properties. Involvement of humans, as a part of these systems, in the decision-making process contributes to overcoming the consequences of the emergent system behavior, since people can use their experience and intuition, not just the programmed rules and procedures.Purpose: Development of models for decision support in socio-cyber-physical systems.Results: A scheme of decision making in socio-cyber-physical systems, a conceptual framework of decision support in these systems, and stepwise decision support models have been developed. The decision-making scheme is that cybernetic components make their decisions first, and if they cannot do this, they ask humans for help. The stepwise models support the decisions made by components of socio-cyber-physical systems at the conventional stages of the decision-making process: situation awareness, problem identification, development of alternatives, choice of a preferred alternative, and decision implementation. The application of the developed models is illustrated through a scenario for planning the execution of a common task for robots.Practical relevance: The developed models enable you to design plans on solving tasks common for system components or on achievement of common goals, and to implement these plans. The models contribute to overcoming the consequences of the emergent behavior of socio-cyber-physical systems, and to the research on machine learning and mobile robot control.


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