NIS2 in the Automotive Ecosystem

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.

NIS2 does not replace automotive-specific regulations such as UNECE R155/R156 or standards like ISO/SAE 21434 and ISO 24089. It complements them with organisational, operational and supply-chain requirements.

1. Regulatory Context

Directive (EU) 2022/2555, known as the NIS2 Directive, establishes a common level of cybersecurity across the European Union. Core obligation areas:

• 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
• Governance — Management accountability, supervision and enforcement

The European Commission has adopted Implementing Regulation (EU) 2024/2690. ENISA provides technical implementation guidance.

National Implementation

Germany: The German NIS2 Implementation Act was promulgated on 5 December 2025 and entered into force on the following day (BSI). For other countries, a country-specific assessment is required.

2. Automotive Ecosystem Impact

NIS2 affects the automotive ecosystem not only through vehicle manufacturers, but through the full digital value chain:

3. NIS2 Requirements Matrix

• Cybersecurity Risk Management — Risk register, threat modelling, control mapping, vulnerability management → Risk assessment, control catalogue, remediation plan
• Incident Reporting — Incident classification, escalation matrix, forensic readiness → Incident response plan, incident log, reporting evidence
• Business Continuity — Backup, disaster recovery, failover, RTO/RPO definition → BCP, DR test report, continuity playbook
• Supply-Chain Security — Supplier risk assessment, contractual requirements, audit rights → Supplier assessment, audit report, security specification
• Governance — Roles and responsibilities, management reviews, risk acceptance → Governance charter, RACI matrix, review minutes
• Secure Operations — SIEM, SOC use cases, logging, monitoring → Detection catalogue, log concept, SOC operating model
• OTA Security — Signed updates, secure release pipeline, rollback, traceability → SUMS evidence, release record (UNECE R156, ISO 24089)
• Vehicle Cybersecurity — TARA, cybersecurity concept, cybersecurity case → CSMS evidence, TARA (UNECE R155, ISO/SAE 21434)
• Data Protection & Privacy — Access control, encryption, privacy by design, data minimisation → DPIA, TOMs, processing records (GDPR)
• Product Cyber Resilience — Secure-by-design, vulnerability handling, SBOM → CRA technical documentation

4. Interfaces with Automotive Cybersecurity Standards

UNECE R155

Addresses vehicle cybersecurity and Cyber Security Management Systems. Product- and type-approval oriented. NIS2 addresses operations and organisation; R155 addresses product cybersecurity. Together they form an end-to-end model.

UNECE R156 & ISO 24089

Addresses Software Update Management Systems. For OTA operations: release management, update security, documentation, traceability, rollback capability and operational monitoring must be auditable.

ISO/SAE 21434

Engineering framework for road vehicle cybersecurity risk management. Serves as engineering-oriented evidence framework while NIS2 adds organisational requirements.

Cyber Resilience Act

Horizontal cybersecurity requirements for products with digital elements. Complementary to NIS2, UNECE and ISO/SAE for automotive components.

GDPR & EU Data Act

Connected vehicle platforms must jointly address cybersecurity, data protection, data access, purpose limitation, role models and technical access controls.

5. Impact on Connected Vehicle Operations

NIS2 shifts focus from point IT security to demonstrable operational resilience:

• Connected-car backends — API hardening, IAM, tenant separation, monitoring and auditability
• OTA operations — Release governance, signed updates, rollback capability, traceable deployment records
• Telematics — Protection of SIM/eSIM profiles, backend interfaces, data channels
• Remote operations — Secure remote access, privileged operator roles, session logging
• 5G/MNO integration — Security controls, operational SLAs, incident interfaces, segmentation

6. Typical Implementation Gaps

1. Fragmented accountability — unclear ownership between IT security, product cybersecurity, platform operations and privacy
2. Incomplete end-to-end risk view — vehicle, backend, cloud, mobile network and suppliers assessed separately
3. Weak supplier evidence — contracts define generic obligations but lack verifiable artefacts
4. Incident process gaps — unclear escalation paths between OEMs, Tier-1s, MNOs, cloud providers and MSPs
5. OTA evidence gaps — release processes exist but are not sufficiently traceable or audit-ready
6. Control mapping gaps — NIS2, UNECE, ISO/SAE, CRA, GDPR and Data Act not mapped into one framework

7. Implementation Recommendations

• Perform a NIS2 scope assessment — Evaluate sector, company size, service role, national law and supply-chain position
• Build an integrated cybersecurity control framework — Map NIS2, UNECE R155/R156, ISO/SAE 21434, ISO 24089, CRA, GDPR and Data Act
• Establish a connected vehicle risk register — Backend, OTA, telematics, APIs, cloud, SIM/eSIM, MNO integration
• Operationalise supplier governance — Translate requirements into contracts, specifications, audits and SLAs
• Test incident and 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 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.

IoT42 helps translate cybersecurity regulation into practical architecture, supplier governance and operational execution.

Sources

1. Directive (EU) 2022/2555 — NIS2 Directive, EUR-Lex.
2. European Commission — NIS2 Directive policy overview.
3. ENISA — NIS2 Technical Implementation Guidance.
4. Commission Implementing Regulation (EU) 2024/2690.
5. BSI — German NIS2 Implementation Act, 5 December 2025.
6. UNECE Regulation No. 155 — Cyber Security and CSMS.
7. UNECE Regulation No. 156 — Software Update and SUMS.
8. ISO/SAE 21434:2021 — Road vehicles — Cybersecurity engineering.
9. ISO 24089:2023 — Road vehicles — Software update engineering.
10. Regulation (EU) 2024/2847 — Cyber Resilience Act.
11. Regulation (EU) 2023/2854 — EU Data Act.
12. Regulation (EU) 2016/679 — GDPR.

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