OTC Engineering logo

Mobility Cybersecurity Engineering 
for OEMs and Tier-1 Suppliers

We embed automotive cybersecurity directly into your architecture, so your R&D team can focus on building the future of mobility without regulatory friction
Let's assess your cybersecurity readiness
BOOK A CALL >
UNECE R155
Compliance Ready
ISO/SAE 21434
Certified Support
CRA
Compliance Ready

Why is Cybersecurity Compliance becoming a roadblock?

UNECE R155, ISO/SAE 21434 and the EU Cyber Resilience Act (CRA) apply across the value chain — from OEMs to component suppliers. Building internal governance, processes and audit-ready evidence takes longer than most programmes have left before SOP.
grid
Architecture Risk
Adding cybersecurity late in the V-cycle means rework on frozen designs, missed milestones and SOP delays
security icon
Mandatory Compliance
R155, ISO/SAE 21434 and the EU Cyber Resilience Act are hard approval gates — not documentation exercises. Failing one can freeze your homologation for months.
Expertise gap
Strong embedded teams often lack dedicated cyber depth — TARA, secure coding, CSMS evidence — that ISO 21434 requires.

What does automotive cybersecurity engineering involve?

We support OEMs and Tier-1 suppliers across the full product cybersecurity lifecycle — from item definition to industrialisation and post-SOP support.
document icon
Consulting & Compliance
• Gap analysis against ISO 21434, UN R155 and CRA
• CSMS design and documentation
• Incident response procedures and documentation
micro chip
Secure Engineering
• TARA (Threat Analysis & Risk Assessment)
• Cybersecurity integration in ECU/system architecture
• Secure design for ECUs, BMS, inverters and connected components
configuration icon
Continuous Support
• Cybersecurity as a Service (CaaS)
• Technical team training and knowledge transfer
• Vulnerability monitoring and incident response
• Post-SOP lifecycle management

Where to Start

Start with a First Fast Diagnosis

A fixed-scope engagement designed to map your current cybersecurity posture against ISO 21434, UN R155 and the EU CRA — and to give you a clear, prioritised path forward.
Scope is pre-agreed before kickoff. Every diagnosis is tailored to your product, your stage in the V-cycle, and your target compliance milestones.
Who we work with
We work with automotive players at every layer of the value chain — from OEMs defining vehicle architectures to component suppliers integrating cybersecurity into ECUs and BMS
Tier 1 Suppliers
Integration of TARA and secure architecture into your existing development processes.

• CRA applicability assessment 
• TARA implementation
• Secure ECU and BMS architecture
• Cybersecurity requirements integration
OEMs
Documentation review and compliance strategy for vehicle manufacturers.

• ISO 21434 compliance strategy
• Tier supplier evidence review
• CSMS oversight and governance
• UN R155 / R156 readiness
SMEs
CSMS and ISO readiness support for small and medium enterprises entering automotive cybersecurity.

• CSMS setup and onboarding
• ISO 21434 readiness
• Process establishment
• CRA readiness for digital and mechatronic products
Why work with OTCEngineering
We accelerate mobility innovation with agile, secure and profitable solutions for a hyperconnected world. We don't just deliver — we work alongside your team as your strategic technical partner.
micro chip
Compliance by Design
We guarantee regulatory compliance (ISO 21434, UN R155, UN R156) without redesigning your existing architecture, protecting your R&D investment.
Deep SW/HW Expertise
We operate at the deepest layers of embedded architecture where generalist IT firms cannot reach, solving critical mechatronic challenges.
Your Engineering Extension
We don't create dependency. We transfer know-how and act as a reliable extension of your engineering department with absolute proximity.
Predictable Engagement
We transcend technical patches to focus on business impact: mitigating regulatory risks and accelerating financial profitability.
OUR APPROACH

Modular Offering

From initial audit to lifecycle maintenance, we cover
every state o the automotive security funnel
01

Rapid Diagnostic

ARCHITECTURE AUDIT & GAP ANALYSIS
02

Core Engineering

Concept · TARA · validation · CSMS
03

Lifecycle Support

Post-SOP monitoring & vulnerability mgmt
Start with a fast diagnosis — know exactly where you stand.
A structured, fixed-scope engagement that maps your gaps against ISO 21434, R155 and CRA — and defines the clearest path forward.

Quick Answers

Everything you need to know about automotive and mobility cybersecurity, ISO/SAE 21434 and UNECE R155 compliance

ISO/SAE 21434 requires Tier-1 suppliers to demonstrate a structured Cybersecurity Management System (CSMS) covering the full product lifecycle — from TARA and secure development through validation and post-SOP monitoring. OEMs increasingly require auditable evidence as a precondition for new RFQs.

UNECE R155 makes cybersecurity type-approval mandatory for new vehicle types in categories M, N, and O since 2022, and extends to category L (motorcycles, mopeds, light quadricycles) from December 2027. Without a certified CSMS and vehicle-level evidence, OEMs cannot homologate the vehicle — directly blocking Start of Production..

Yes, in most cases. Complete vehicles in categories M, N, O, and L are excluded from the CRA because they are already covered by UNECE R155. However, Tier-1 and Tier-2 suppliers fall under the CRA for digital components not regulated through type approval, as do standalone digital products (chargers, aftermarket devices, connected accessories) from December 2027.

Yes, when intervention happens early enough in the V-cycle. OTC's First Fast Diagnosis identifies which controls can be layered onto the existing architecture and which require structural changes — protecting both the SOP date and the original cost envelope.

OEMs request project-specific, traceable evidence: TARA documentation, cybersecurity concept, validation and penetration test results, and CSMS process records. Generic certificates are not enough — auditors look for engineering depth, not templated outputs.

Engagements are scoped by phase and component criticality, allowing predictable investment aligned with project milestones. OTC's fixed-scope First Fast Diagnosis gives you a clear gap analysis and a costed roadmap before any larger commitment.

It depends on your role and product. OEMs in categories M, N, and O must comply with UNECE R155 and R156, mandatory since July 2024. OEMs in category L (motorcycles, light vehicles) come into scope from December 2027. Tier-1 and Tier-2 suppliers must align with ISO/SAE 21434 by contractual cascade, plus the CRA for components outside vehicle type approval. Standalone digital mobility products fall under the CRA from December 2027.

Stay connected with OTC Engineering.
crossmenu