Functional Safety and Cyber Security in the Process Industry | 
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A tension between stability and agility
| Journal | Industry 4.0 Science |
| Issue | Volume 41, 2025, Edition 2, Pages 87-93 |
| Bibliography | Share | Cite | Download |
Abstract
Functional safety (safety) and cyber security (security) are key aspects of modern industry and technology. Safety aims to minimize risks posed by system malfunctions. This includes measures to protect people and the environment from failures and errors within systems. Security focuses on protecting systems and networks from digital attacks. The primary security objectives include ensuring confidentiality, integrity, and availability. A joint consideration of safety and security is essential for the future of the process industry, as both the physical safety and digital integrity of modern systems must be ensured. In industrial practice, this creates a field of tension: measures to enhance security can negatively impact safety and vice versa. This article analyzes relevant standards and regulations, presents key approaches for the integrated consideration of safety and security, and highlights areas of further research.
Article
Stability vs. agility — a contradiction? Industrial plants use electrical and electronic systems to perform safety-critical functions, ensuring safe and uninterrupted operation. High plant availability can only be guaranteed if functional safety (safety) is maintained. Safety-critical failures not only affect plant availability but can also lead to severe accidents. Figure 1: Protection objectives of safety and security [1, 2]. …
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