ISO 21434: Risk Treatment Decisions — Avoid, Reduce, Share, Retain and the Claims That Back Them

Date
2026-10-14
Location
Online
Host
Zach L
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About this event

A live 30-minute expert session on Risk Treatment Decisions — Avoid, Reduce, Share, Retain and the Claims That Back Them (ISO 21434 — Automotive Cybersecurity). What We'll Cover: What risk treatment is and where it closes out the Clause 15 TARA before concept work begins Decision flow step by step: option selection, rationale, cybersecurity goals for reduced risks, and claims for retained or shared risks How treatment decisions map to Clause 15.8 and the cybersecurity goals and claims work products Common mistakes: silent retention without claims, sharing risk to suppliers without interface agreements, and goals that restate threats The treatment rationale and claim validity monitoring evidence auditors expect Related topics: risk treatment · cybersecurity goals · cybersecurity claims · risk retention · risk sharing · iso 21434 clause 15 · tara outputs · risk acceptance rationale · concept phase inputs · claims monitoring · risk reduction · treatment decision log Critical Systems Analysis provides embedded functional safety consulting for ISO 21434 — Automotive 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

Risk reduction allocation
Distributing required risk reduction among mechanical design, safeguards, control functions and procedures.
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.
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.