Industry Whitepaper
NIS2 in the Automotive Ecosystem
Cybersecurity, Supply Chains and Connected Vehicle Operations
Executive Summary
The NIS2 Directive significantly expands the European cybersecurity framework. It requires affected entities to establish cybersecurity risk management measures, incident reporting processes, business continuity capabilities, supply-chain security controls and management accountability.
For the automotive ecosystem, NIS2 is particularly relevant because connected vehicles are no longer isolated products. They operate as distributed digital systems across vehicle electronics, backend platforms, cloud infrastructure, mobile networks, OTA systems, data platforms and managed services.
This whitepaper separates regulatory facts, technical interpretation and implementation recommendations. It does not constitute legal advice. The concrete applicability of NIS2 to a specific company must always be assessed individually.
1. Regulatory Context
1.1 Purpose and Scope of NIS2
Directive (EU) 2022/2555, known as the NIS2 Directive, establishes a common level of cybersecurity across the European Union. It expands the scope of regulated sectors and introduces stricter requirements for cybersecurity risk management, reporting, supervision and enforcement.
- Cyber risk management — appropriate and proportionate technical, operational and organisational measures.
- Incident reporting — processes for reporting significant cybersecurity incidents to competent authorities.
- Business continuity — crisis management, backup management, disaster recovery and operational resilience.
- Supply-chain security — assessment and management of risks arising from suppliers and service providers.
1.2 National Implementation
Germany: According to the German Federal Office for Information Security (BSI), the German NIS2 Implementation Act was promulgated on 5 December 2025 and entered into force on the following day.
Important limitation: This whitepaper does not determine whether a specific company is legally in scope. Such assessment requires a case-by-case analysis based on sector, size, services, national implementation law and operational role.
2. Automotive Ecosystem Impact
NIS2 affects the automotive ecosystem not only through vehicle manufacturers, but through the full digital value chain of connected vehicle operations.
- OEMs: connected vehicle platforms, OTA operations, vehicle data platforms, cybersecurity governance.
- Tier-1 and Tier-2 suppliers: ECUs, connectivity units, firmware, software components and evidence artefacts.
- Mobile network operators: SIM/eSIM, roaming, IoT connectivity, SLA interfaces and network security.
- Cloud and managed service providers: hosting, monitoring, incident response, platform resilience and operational security.
3. NIS2 Requirements Matrix
| NIS2 Requirement | Affected Automotive Actors | Technical Implementation | Evidence Artefact | Source |
|---|---|---|---|---|
| Cybersecurity risk management | OEMs, Tier-1s, cloud providers, MSPs, connectivity platforms | Risk register, threat modelling, control mapping, vulnerability management | Risk assessment, control catalogue, remediation plan | NIS2, ENISA guidance |
| Incident reporting | OEMs, MNOs, MSPs, platform operators | Incident classification, escalation matrix, forensic readiness, authority reporting workflow | Incident response plan, incident log, reporting evidence | NIS2 |
| Business continuity | Connected vehicle platforms, cloud providers, OTA operators | Backup, disaster recovery, failover, crisis communication, RTO/RPO definition | BCP, DR test report, continuity playbook | NIS2, ENISA |
| Supply-chain security | OEMs, Tier-1s, Tier-2s, software suppliers | Supplier risk assessment, contractual security requirements, audit rights, SBOM handling | Supplier assessment, audit report, security requirements specification | NIS2, UNECE R155 |
| Governance and management accountability | Executive management, CISO, product owners, platform owners | Roles and responsibilities, management reviews, risk acceptance process | Governance charter, RACI matrix, review minutes | NIS2 |
| Secure operations | OEMs, MSPs, SOC teams, backend operators | SIEM, SOC use cases, logging, monitoring, vulnerability response | Detection catalogue, log concept, SOC operating model | ENISA |
| OTA security | OEMs, Tier-1s, OTA platform providers | Signed updates, secure release pipeline, rollback capability, update traceability | SUMS evidence, release record, test report | UNECE R156, ISO 24089 |
| Vehicle cybersecurity engineering | OEMs, Tier-1s, Tier-2s | TARA, cybersecurity concept, cybersecurity case, vulnerability handling | CSMS evidence, TARA, cybersecurity case | UNECE R155, ISO/SAE 21434 |
| Data protection and privacy | OEMs, platform operators, data platforms | Access control, encryption, privacy by design, data minimisation | DPIA, TOMs, processing records | GDPR, EU Data Act |
| Product cyber resilience | OEMs, suppliers, software and hardware providers | Secure-by-design, vulnerability handling, update support, technical documentation | SBOM, vulnerability policy, CRA technical documentation | Cyber Resilience Act |
4. Interfaces with Automotive Cybersecurity Standards
- UNECE R155 — addresses vehicle cybersecurity and Cyber Security Management Systems. It is product- and type-approval oriented.
- UNECE R156 — addresses Software Update Management Systems and secure handling of vehicle software updates.
- ISO/SAE 21434 — provides an engineering framework for road vehicle cybersecurity risk management.
- ISO 24089 — defines requirements and recommendations for software update engineering.
- Cyber Resilience Act — introduces horizontal cybersecurity requirements for products with digital elements.
- GDPR & EU Data Act — require secure, lawful and transparent handling of vehicle-related and personal data.
Technical interpretation: NIS2 does not replace UNECE R155/R156, ISO/SAE 21434 or ISO 24089. It complements them with organisational, operational and supply-chain requirements.
5. Impact on Connected Vehicle Operations
- Connected-car backends: API hardening, IAM, tenant separation, monitoring and auditability.
- OTA operations: release governance, signed updates, rollback capability and traceable deployment records.
- Telematics: protection of SIM/eSIM profiles, backend interfaces, data channels and lifecycle processes.
- Remote operations: secure remote access, privileged operator roles, session logging and emergency procedures.
- 5G and MNO integration: security controls, operational SLAs, incident interfaces, roaming and segmentation.
6. Typical Implementation Gaps
- Fragmented accountability: unclear ownership between IT security, product cybersecurity, platform operations and privacy.
- Incomplete end-to-end risk view: vehicle, backend, cloud, mobile network and suppliers are assessed separately.
- Weak supplier evidence: contracts define generic security obligations but lack verifiable artefacts.
- Incident process gaps: unclear escalation paths between OEMs, Tier-1s, MNOs, cloud providers and MSPs.
- OTA evidence gaps: release processes exist but are not sufficiently traceable or audit-ready.
- Control mapping gaps: NIS2, UNECE R155/R156, ISO/SAE 21434, ISO 24089, CRA, GDPR and the EU Data Act are not mapped into one coherent control framework.
7. Implementation Recommendations
- Perform a NIS2 scope assessment. Evaluate sector, company size, service role, national implementation law and supply-chain position.
- Build an integrated automotive cybersecurity control framework. Map NIS2, UNECE R155/R156, ISO/SAE 21434, ISO 24089, CRA, GDPR and the EU Data Act.
- Establish a connected vehicle risk register. Include backend, OTA, telematics, APIs, cloud, SIM/eSIM, MNO integration and remote operations.
- Operationalise supplier governance. Translate requirements into contracts, specifications, audits, SLAs and evidence artefacts.
- Test incident and business continuity processes. Include OEM, Tier-1, MNO, cloud provider and MSP interfaces.
- Design for auditability from the start. Version risk decisions, architecture records, release approvals, supplier evidence and test reports.
8. IoT42 Competence Contribution
IoT42 supports automotive organisations at the intersection of connectivity architecture, mobile network integration, data privacy, cybersecurity requirements and operational implementation.
Requirements engineering — translation of regulatory, technical and operational requirements into implementable specifications.
Gap analysis — structured assessment of current controls against NIS2, UNECE, ISO/SAE, CRA, GDPR and Data Act requirements.
Connectivity architecture — evaluation of MNO, 5G, SIM/eSIM, telematics, backend and vehicle data platform interfaces.
Compliance-by-design — integration of cybersecurity, privacy, evidence management and supplier controls into architecture and operations.
IoT42 helps translate cybersecurity regulation into practical architecture, supplier governance and operational execution.
Sources
- Directive (EU) 2022/2555 — NIS2 Directive, EUR-Lex.
- European Commission — NIS2 Directive policy overview.
- ENISA — NIS2 Technical Implementation Guidance.
- Commission Implementing Regulation (EU) 2024/2690.
- BSI — German NIS2 Implementation Act, 5 December 2025.
- UNECE Regulation No. 155 — Cyber Security and Cyber Security Management System.
- UNECE Regulation No. 156 — Software Update and Software Update Management System.
- ISO/SAE 21434:2021 — Road vehicles — Cybersecurity engineering.
- ISO 24089:2023 — Road vehicles — Software update engineering.
- Regulation (EU) 2024/2847 — Cyber Resilience Act.
- Regulation (EU) 2023/2854 — EU Data Act.
- Regulation (EU) 2016/679 — General Data Protection Regulation.
© 2026 IoT42 GmbH. All rights reserved. This whitepaper is for informational purposes only and does not constitute legal, regulatory or investment advice.