IEC 62443: 62443-3-3 System Security Requirements — Building the Compliance Matrix

Date
2026-09-17
Location
Online
Host
Zach L

About this event

A live 30-minute expert session on 62443-3-3 System Security Requirements — Building the Compliance Matrix (IEC 62443 — Industrial Cybersecurity). What We'll Cover: What 62443-3-3 covers, who owns it (system integrator vs asset owner), and where it sits between risk assessment and component selection The method step by step: derive SRs from the SL-T vector, select requirement enhancements, allocate to components and compensating countermeasures How the allocation maps to 62443-3-3 clauses and the system requirements traceability matrix it produces Common mistakes: cherry-picking SRs, ignoring REs needed at SL 3, double-counting a firewall as the answer to every FR The traceability an assessor checks: SL-T to SR to component capability to verification evidence, gap-free Related topics: iec 62443-3-3 · system security requirements · requirement enhancements · compliance matrix · sl capability · system integrator · iacs system design · security requirement allocation · traceability matrix · ssa certification · control system security · sr mapping Critical Systems Analysis provides embedded functional safety consulting for IEC 62443 — Industrial Cybersecurity. Learn more: https://criticalsystemsanalysis.com Partner with us: https://meetings.hubspot.com/benjamin-twombly/strategic-partnerships

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About Functional Safety Foundations

This online session delivers expert-led instruction on the regulatory landscape and implementation approach for Functional Safety Foundations.

The cross-sector fundamentals underlying every functional safety standard: risk as severity × likelihood, the safety function concept, integrity levels, the safety lifecycle, and the split between random and systematic failures.

What it regulates

Shared vocabulary and reasoning: hazard → risk → risk reduction allocation → safety requirement → verified implementation → maintained integrity in operation.

Who must comply

Everyone entering the field — the conceptual base of the entire catalog.

Key requirements of Functional Safety Foundations

  • Hazard and risk fundamentals
  • Safety function anatomy: sensor-logic-actuator with defined safe state
  • Integrity ladders (SIL/PL/ASIL/DAL) as risk-reduction currencies
  • Random vs systematic failure treatment
  • Lifecycle and management of functional safety incl. competence

Key concepts: Functional Safety Foundations

Functional safety management
Planning, competence, documentation and assessment wrapped around technical work.
Random vs systematic
Hardware wear-out/chance failures quantified statistically versus design/process errors controlled by rigor.
Risk reduction allocation
Distributing required risk reduction among mechanical design, safeguards, control functions and procedures.
Safe state
The defined condition a function drives the equipment to on demand or fault.

Frequently asked questions: Functional Safety Foundations

Why can't testing alone prove safety?

Rare-event targets (like 1e-7/h) are unverifiable by test duration, and systematic errors evade random testing — hence the standards' dual machinery of quantified hardware analysis plus process rigor and independent assessment.

Standard information based on the published text of Functional Safety Foundations. Event content is provided by the host. For authoritative guidance, consult the official standard body.