ISO 21434

HOW TO WRITE CYBERSECURITY GOALS FROM TARA OUTPUTS

Turning ISO 21434 threat scenarios into clear cybersecurity goals and requirements

ISO 214348 min readJune 2026By Waleed Aman

Cybersecurity goals are the bridge between TARA and implementation. They describe what must be achieved to treat a cybersecurity risk, while requirements and controls define how the product or organization will achieve it. A weak goal repeats a threat. A strong goal states the security intent needed to reduce a defined damage scenario.

Start with the damage scenario

The best cybersecurity goals start from the damage scenario and threat scenario together. If unauthorized firmware modification could cause unsafe behavior or regulatory exposure, the goal should address the integrity and authorization problem behind that risk. It should not simply say "prevent hacking."

Keep the goal clear before choosing controls

Cybersecurity goals should be clear enough to guide requirements, but they do not need to select every technical mechanism. Secure boot, signing, key management, access control, monitoring, or intrusion detection may become controls later. The goal should preserve the security intent while leaving room for architectural design.

Maintain traceability to TARA

Every cybersecurity goal should trace to the asset, property, damage scenario, threat scenario, and risk treatment decision that created it. Without that chain, requirements become detached from the risk argument and later reviews become harder.

Review checklist

Is the protected asset clear? The goal should make it possible to see what needs protection and why.

Is the security property visible? Integrity, availability, confidentiality, authenticity, or authorization should be understandable from the goal or its linked context.

Does it lead to requirements? A useful goal can be converted into engineering requirements, controls, and evidence.

Is the review history preserved? Cybersecurity risk decisions should show who reviewed and approved them.

SafeForge helps connect TARA outputs, cybersecurity goals, requirements, controls, and audit-ready evidence in one workflow. AI can draft candidate goals, but expert review remains the gate to approval.

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