Safety engineering
Functional Safety Engineering Aligned With Cybersecurity
At a glance
- Concept
- Architecture
- Development
- Verification
- Standards referenced
- ISO 26262ISO/SAE 21434
- Core deliverables
- HARA support documentation
- Safety goals and requirements
- Functional safety concept input
- Safety and security interaction analysis
The problem we are asked to solve
- Safety and security teams produce conflicting requirements.
- Security controls are introduced without assessing safety impact.
- Interfaces between HARA and TARA are undefined.
- Evidence for both disciplines is maintained twice.
What changes as a result
- Coordinated safety and security requirements
- Documented interaction between HARA and TARA
- Reduced duplication across safety and security evidence
- Clear decisions where safety and security constraints conflict
Scope of work
What the engagement covers
Scope is agreed per programme. These are the activities we most often deliver for this service.
- Hazard analysis and risk assessment (HARA) support
- Safety goals and functional safety requirements
- Safety concept development
- Safety and security co-engineering
- Interface definition between HARA and TARA
- Work-product review
- Verification and validation planning support
Engagement methodology
How we work
A predictable sequence, adapted to your process and release gates rather than replacing them.
- 01
Align scope
Agree the item under consideration for both safety and cybersecurity so analyses share a boundary.
- 02
Support hazard analysis
Contribute to or review HARA and the derivation of safety goals and functional safety requirements.
- 03
Analyse interaction
Identify where security controls affect safety mechanisms and where safety constraints limit security options.
- 04
Resolve conflicts explicitly
Document trade-off decisions with rationale so they appear in both safety and cybersecurity evidence.
- 05
Review work products
Check safety and cybersecurity artefacts for consistency before internal or external assessment.
Deliverables
Every engagement ends with artefacts your organisation owns and can defend in review.
- HARA support documentation
- Safety goals and requirements
- Functional safety concept input
- Safety and security interaction analysis
- Review findings and recommendations
Relevant standards
We help organisations interpret and implement these requirements. We do not certify or approve organisations.
- ISO 26262
- ISO/SAE 21434
Typical use cases
- Coordinating a joint safety and security concept
- Assessing safety impact of a proposed security control
- Aligning HARA and TARA scope for the same item
- Reviewing safety work products before assessment
Evidence
Case studies covering Functional Safety work are being prepared for publication. Automotive security engagements are normally confidential, so we discuss comparable scope, method, and deliverables directly rather than publishing unverifiable claims.
Questions
Frequently asked
Do you replace our functional safety team?
How are safety and security conflicts handled?
Related services
Often delivered together
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Structured threat analysis and risk assessment that produces defensible risk decisions, not spreadsheets nobody uses.
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Discuss Your Cybersecurity Program
Tell us where the programme is today and we will outline a realistic next step.