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Formal Security Proof Assurance in Architecture Design for IT/OT Convergence

  • 2026
  • OriginalPaper
  • Chapter
Published in:
Authors
Massimiliano Masi
Giovanni Paolo Sellitto
Helder Aranha
Tanja Pavleska
Published in
The Practice of Enterprise Modeling
Publisher
Springer Nature Switzerland

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Abstract

This chapter explores the critical challenge of ensuring formal security proof assurance in the architecture design for IT/OT convergence. It delves into the importance of maintaining availability and integrity in legacy OT environments, which often rely on long-term certified systems that are not easily taken offline. The text introduces a methodology that translates formal protocol models into architectural components, enabling simulations to test assumptions and strengthen system resilience. It highlights the use of Model-Driven Design (MDD) and formal methods to manage the complexity of introducing new features or system modifications in OT environments. The chapter also discusses the role of the ISA/IEC 62443 family of standards, which prioritizes availability, integrity, and confidentiality in OT systems. Through a real-world use case involving a SCADA system and a PLC, the text demonstrates how the proposed methodology can be applied to ensure the authenticity and confidentiality of messages in transit. It concludes by emphasizing the need for iterative threat modeling and targeted mitigations to reinforce security and availability in IT/OT convergence.
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previous chapter Towards Architectural Coordination of Digital Twin Development in Urban Planning
Title
Formal Security Proof Assurance in Architecture Design for IT/OT Convergence
Authors
Massimiliano Masi
Giovanni Paolo Sellitto
Helder Aranha
Tanja Pavleska
Copyright Year
2026
Book
The Practice of Enterprise Modeling

Print ISBN: 978-3-032-12062-5

Electronic ISBN: 978-3-032-12063-2

Copyright Year: 2026

DOI
https://doi.org/10.1007/978-3-032-12063-2_19
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