ISO/SAE 21434:2021
2021-08
ISO/SAE 21434:2021
What is ISO/SAE 21434?
ISO/SAE 21434:2021 is an international standard that defines engineering requirements for cybersecurity risk management in the context of road vehicles. It applies to the entire lifecycle of electrical and electronic (E/E) systems in vehicles—from concept and development to production, operation, maintenance, and decommissioning.
The standard was jointly developed by ISO and SAE International, and it replaces the earlier SAE J3061 guideline.
Why is ISO/SAE 21434 Important?
Modern vehicles are increasingly connected and software-driven, making them more vulnerable to cybersecurity threats. ISO/SAE 21434 is crucial because it:
- Establishes a structured framework for managing cybersecurity risks in automotive systems.
- Supports compliance with regulatory requirements, such as the UNECE WP.29 regulation on cybersecurity and software updates.
- Promotes industry-wide consistency in how cybersecurity is addressed across the automotive supply chain.
- Helps manufacturers and suppliers build trust with consumers and regulators by demonstrating a commitment to cybersecurity.
Benefits of ISO/SAE 21434
Implementing ISO/SAE 21434 offers several key benefits:
- Risk reduction: Identifies and mitigates cybersecurity risks early in the development process.
- Improved security posture: Enhances the resilience of vehicles against cyberattacks.
- Lifecycle coverage: Ensures cybersecurity is considered throughout the vehicle’s lifecycle.
- Supply chain alignment: Facilitates better collaboration and communication between OEMs and suppliers.
- Regulatory readiness: Helps organizations meet international regulatory and legal requirements.
- Integration with functional safety: Complements standards like ISO 26262 for functional safety.
FAQ
Automotive OEMs, Tier 1 and Tier 2 suppliers, and any organization involved in the design, development, or maintenance of vehicle E/E systems.
While not legally mandatory, it is increasingly becoming a de facto requirement due to regulatory pressures and industry expectations.
ISO 26262 focuses on functional safety, while ISO/SAE 21434 addresses cybersecurity. Both standards are complementary and often implemented together.
All electrical and electronic systems in road vehicles, including software, hardware, and communication interfaces
No, the standard is technology-agnostic. It focuses on processes and risk management rather than specific tools or solutions.
Buy together
Integrated automotive cybersecurity & information security standards package
This package provides a holistic approach to managing information security, cybersecurity, and privacy protection.
- ISO/SAE 21434:2021
- ISO/IEC 27001:2022
- ISO/IEC 27002:2022
ISO 26262 road vehicles functional safety
Ensure comprehensive functional safety for road vehicles with our ISO 26262 standards package, covering all critical aspects from vocabulary to guidelines.
- ISO 26262-1:2018
- ISO 26262-2:2018
- ISO 26262-3:2018
- ISO 26262-4:2018
- ISO 26262-5:2018
- ISO 26262-6:2018
- ISO 26262-7:2018
- ISO 26262-8:2018
- ISO 26262-9:2018
- ISO 26262-10:2018
General information
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Status: PublishedPublication date: 2021-08Stage: International Standard published [60.60]
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Edition: 1Number of pages: 81
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Technical Committee :ISO/TC 22/SC 32ICS :43.040.15
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