If you are responsible for a Safety Instrumented System (SIS) with Safety Integrity Level (SIL) rated functions, then you might be wondering where to start with cybersecurity standards for industrial automation and control systems (IACS).

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The recently updated process sector safety instrumented system (SIS) standard IEC 61511 now requires that a “security risk assessment is carried out to identify security vulnerabilities of the SIS” [1]. But how should such an assessment be approached*, and what can you do to prepare for it?There have been well publicized examples of cyber-security breaches

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