Cybersecurity Certification Roadmap for the Automotive Supply Chain
OEM supplier lists are being re-sorted: those with TISAX get in, those without are out.
Cybersecurity requirements in the automotive industry are now law. UN R155 requires vehicle manufacturers to operate a cyber security management system and to hold their supply chain accountable; non-compliance means type-approval barriers in the EU and other markets — effectively a sales ban. German OEMs use the TISAX assessment as the entry ticket for supplier information security, with AL3 covering highly confidential data and prototype protection. ISO/SAE 21434 defines the cybersecurity engineering process for vehicle electrical and electronic systems. For Taiwan’s automotive component, electronics and software suppliers these three are not optional extras — they are the condition for keeping the order.
Decision tools this industry uses most
The Cost of Inaction: Risk Scenarios for Automotive Supply Chain
| Scenario | Impact | Standard | Regulatory Clock |
|---|---|---|---|
| Failing the TISAX assessment and being removed from the supplier list | Orders from German and international OEMs stop immediately | TISAX (AL2 / AL3) | OEM due-diligence and contract-renewal timing is set by the customer |
| Product cannot meet UN R155 requirements | The customer’s vehicle model cannot obtain type approval — effectively a sales ban in the EU | UN R155 + ISO/SAE 21434 | The regulation now applies to all new vehicles |
| Leak of prototype data or drawings | Breach of confidentiality obligations leads to claims; AL3 requirements are stricter | TISAX prototype protection | Incidents do not make appointments |
| Line stoppage disrupts the OEM’s just-in-time supply | Heavy contractual penalties and a downgrade in supplier rating | ISO 22301 BCM | OEM resilience due diligence is now routine |
Recommended Compliance Path
The recommended path uses automotive cybersecurity consulting (TISAX × ISO 21434) as the backbone to secure the entry ticket; vehicle component cybersecurity follows UN R155 (ISO/SAE 21434), aftermarket and separately marketed connected products follow the CRA, BCM satisfies OEM resilience due diligence, and ERM consolidates scattered customer requirements into one system — so compliance is not rebuilt with every new order.
Certification & Standards Landscape
| Area | Standard / regulation |
|---|---|
| Quality management | IATF 16949 |
| Information security assessment | TISAX |
| Vehicle cybersecurity engineering | ISO/SAE 21434 |
| Software process capability | ASPICE |
| Functional safety | ISO 26262 |
| AI governance | ISO 42001 |
| Cyber security management (type approval) | UN R155 |
| OTA software update security | UN R156 |
| Aftermarket / separately marketed connected products | EU Cyber Resilience Act (CRA) |
The table above maps the certification and regulatory landscape for this industry. The right combination depends on your customers and product profile - Winners helps you sequence certifications for maximum commercial value on a shared documentation backbone.
Why Winners Consulting
Winners knows the language of OEM due diligence and the practice of TISAX assessments. We complete gap analysis, system build-out and assessment accompaniment in one stop, and strengthen the operational-resilience requirements OEMs increasingly emphasise with ERM and BCM — the goal is to pass the target level the first time.
Who This Is For
- Automotive component and module manufacturers
- Automotive electronics and software suppliers
- Tier 1 and Tier 2 suppliers being asked for TISAX by OEMs
- Technology companies entering the automotive market
Named clients (published with client authorisation)
Yi Fong Metal Industrial Co., Ltd.
TISAX assessment consulting (VDA ISA 6.0; assessed by SGS Taiwan, TISAX label obtained)
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Other engagements are anonymised by industry under NDA.
FAQ
Which cybersecurity certifications does an automotive component maker need?
Three core items: the TISAX assessment (the entry ticket for OEM supplier information security), ISO/SAE 21434 (required when the product involves electrical and electronic systems) and the capability to support UN R155 (supporting the customer’s vehicle type approval). The actual combination depends on product type and customer requirements — Winners recommends a gap analysis first, then deciding the order of adoption.
Which named clients has Winners served in Automotive Supply Chain?
Named clients published with authorisation: Yi Fong Metal Industrial Co., Ltd.（TISAX assessment consulting (VDA ISA 6.0; assessed by SGS Taiwan, TISAX label obtained)）。Other engagements are anonymised by industry under NDA.
How do we choose between TISAX AL2 and AL3?
It depends on the confidentiality level of the data you handle: ordinary confidential data corresponds to AL2; highly confidential data or prototype protection (such as pre-series parts or unreleased vehicle data) requires AL3. OEMs usually state the required level in their due-diligence documents.
We already have ISO 27001 — how far are we from TISAX?
TISAX is based on the VDA ISA questionnaire. It overlaps heavily with ISO 27001 but adds automotive-specific requirements such as prototype protection and data protection, and uses assessment levels. An existing ISO 27001 system shortens the implementation considerably; the gap lies mainly in the industry-specific controls.
Does the engagement include accompanying us through the assessment?
Yes. From gap analysis, system build-out and internal audit to coordination with the assessment provider and on-site accompaniment, Winners provides one-stop support.
Turn compliance for Automotive Supply Chain into a competitive edge
Winners Consulting Services — hands-on, cross-domain consulting: compliance, security engineering, process optimization and certification, all in one place.
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