ISO/SAE 21434 – Automotive Cybersecurity

This section provides an introductory, high-level overview of ISO/SAE 21434: principles, lifecycle phases, supporting processes, and regulatory alignment. It’s designed for awareness and navigation; for full, normative requirements please consult the official standard.

Disclaimer: Summary content only. Refer to the official ISO/SAE 21434:2021 publication and applicable regulations (UNECE R155/R156, GB/T 44495/44496) for authoritative requirements.

Chapters

Overview

What the standard is, why it matters, and who it applies to.

Overview →

Scope

Lifecycle coverage, stakeholders, systems in scope, and boundaries.

Scope →

Key Principles

Risk-based engineering (TARA), defense-in-depth, governance, and more.

Key Principles →

CSMS

The organizational framework required to manage cybersecurity consistently.

CSMS →

Concept Phase

TARA, cybersecurity goals, and claims that guide development.

Concept Phase →

Product Development

Requirements, security-by-design, verification, validation, and traceability.

Product Development →

Operations & Post-Development

Production security, monitoring, updates (SUMS), incident response, decommissioning.

Operations and Post-Development →

Supporting Processes

Supplier management, configuration/change control, documentation, improvement.

Supporting Processes →

Regulations & Alignment

UNECE R155/R156, GB/T 44495/44496, and how ISO 21434 supports type approval.

Regulations And Alignment →

Need help applying ISO/SAE 21434?

We support OEMs and suppliers with CSMS setup, TARA workshops, requirement engineering, and readiness for UNECE R155/R156. Talk to our team about tailored engagements.