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Mitigating Insider Threat Risks in Cyber-Physical Manufacturing Systems.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Mitigating Insider Threat Risks in Cyber-Physical Manufacturing Systems./
作者:
Song, Jinwoo.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:
207 p.
附註:
Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
Contained By:
Dissertations Abstracts International83-02B.
標題:
Engineering. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28645385
ISBN:
9798535511467
Mitigating Insider Threat Risks in Cyber-Physical Manufacturing Systems.
Song, Jinwoo.
Mitigating Insider Threat Risks in Cyber-Physical Manufacturing Systems.
- Ann Arbor : ProQuest Dissertations & Theses, 2021 - 207 p.
Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
Thesis (Ph.D.)--Syracuse University, 2021.
This item must not be sold to any third party vendors.
Cyber-Physical Manufacturing System (CPMS)-a next generation manufacturing system-seamlessly integrates digital and physical domains via the internet or computer networks. It will enable drastic improvements in production flexibility, capacity, and cost-efficiency. However, enlarged connectivity and accessibility from the integration can yield unintended security concerns. The major concern arises from cyber-physical attacks, which can cause damages to the physical domain while attacks originate in the digital domain. Especially, such attacks can be performed by insiders easily but in a more critical manner: Insider Threats. Insiders can be defined as anyone who is or has been affiliated with a system. Insiders have knowledge and access authentications of the system's properties, therefore, can perform more serious attacks than outsiders. Furthermore, it is hard to detect or prevent insider threats in CPMS in a timely manner, since they can easily bypass or incapacitate general defensive mechanisms of the system by exploiting their physical access, security clearance, and knowledge of the system vulnerabilities. This thesis seeks to address the above issues by developing an insider threat tolerant CPMS, enhanced by a service-oriented blockchain augmentation and conducting experiments & analysis. The aim of the research is to identify insider threat vulnerabilities and improve the security of CPMS. Blockchain's unique distributed system approach is adopted to mitigate the insider threat risks in CPMS. However, the blockchain limits the system performance due to the arbitrary block generation time and block occurrence frequency. The service-oriented blockchain augmentation is providing physical and digital entities with the blockchain communication protocol through a service layer. In this way, multiple entities are integrated by the service layer, which enables the services with less arbitrary delays while retaining their strong security from the blockchain. Also, multiple independent service applications in the service layer can ensure the flexibility and productivity of the CPMS.To study the effectiveness of the blockchain augmentation against insider threats, two example models of the proposed system have been developed: Layer Image Auditing System (LIAS) and Secure Programmable Logic Controller (SPLC). Also, four case studies are designed and presented based on the two models and evaluated by an Insider Attack Scenario Assessment Framework. The framework investigates the system's security vulnerabilities and practically evaluates the insider attack scenarios.The research contributes to the understanding of insider threats and blockchain implementations in CPMS by addressing key issues that have been identified in the literature. The issues are addressed by EBIS (Establish, Build, Identify, Simulation) validation process with numerical experiments and the results, which are in turn used towards mitigating insider threat risks in CPMS.
ISBN: 9798535511467Subjects--Topical Terms:
586835
Engineering.
Subjects--Index Terms:
Blockchain
Mitigating Insider Threat Risks in Cyber-Physical Manufacturing Systems.
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Cyber-Physical Manufacturing System (CPMS)-a next generation manufacturing system-seamlessly integrates digital and physical domains via the internet or computer networks. It will enable drastic improvements in production flexibility, capacity, and cost-efficiency. However, enlarged connectivity and accessibility from the integration can yield unintended security concerns. The major concern arises from cyber-physical attacks, which can cause damages to the physical domain while attacks originate in the digital domain. Especially, such attacks can be performed by insiders easily but in a more critical manner: Insider Threats. Insiders can be defined as anyone who is or has been affiliated with a system. Insiders have knowledge and access authentications of the system's properties, therefore, can perform more serious attacks than outsiders. Furthermore, it is hard to detect or prevent insider threats in CPMS in a timely manner, since they can easily bypass or incapacitate general defensive mechanisms of the system by exploiting their physical access, security clearance, and knowledge of the system vulnerabilities. This thesis seeks to address the above issues by developing an insider threat tolerant CPMS, enhanced by a service-oriented blockchain augmentation and conducting experiments & analysis. The aim of the research is to identify insider threat vulnerabilities and improve the security of CPMS. Blockchain's unique distributed system approach is adopted to mitigate the insider threat risks in CPMS. However, the blockchain limits the system performance due to the arbitrary block generation time and block occurrence frequency. The service-oriented blockchain augmentation is providing physical and digital entities with the blockchain communication protocol through a service layer. In this way, multiple entities are integrated by the service layer, which enables the services with less arbitrary delays while retaining their strong security from the blockchain. Also, multiple independent service applications in the service layer can ensure the flexibility and productivity of the CPMS.To study the effectiveness of the blockchain augmentation against insider threats, two example models of the proposed system have been developed: Layer Image Auditing System (LIAS) and Secure Programmable Logic Controller (SPLC). Also, four case studies are designed and presented based on the two models and evaluated by an Insider Attack Scenario Assessment Framework. The framework investigates the system's security vulnerabilities and practically evaluates the insider attack scenarios.The research contributes to the understanding of insider threats and blockchain implementations in CPMS by addressing key issues that have been identified in the literature. The issues are addressed by EBIS (Establish, Build, Identify, Simulation) validation process with numerical experiments and the results, which are in turn used towards mitigating insider threat risks in CPMS.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28645385
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