The EU's NIS2 Directive is intensifying operational technology (OT) security obligations for automotive manufacturers and logistics operators, pushing mid-sized facilities to accelerate risk assessments, network segmentation, and open-standards retrofits or face fines reaching tens of millions of euros.
NIS2 establishes a unified legal framework to uphold cybersecurity across 18 critical sectors throughout the EU.1How to achieve NIS2 compliance for OT remote access The directive, which came into force in January 2023, marks a decisive shift in how digital risk is governed. Its emphasis on the supply chain means it does not merely target OEMs but places direct and indirect obligations on every level of the supply ecosystem, from Tier 1s to Tier 3s and beyond.
Background
NIS2 took effect in late 2024, setting a new benchmark for cybersecurity across Europe's critical sectors. For manufacturers producing high-risk products such as industrial machinery, medical devices, or automotive components, the directive explicitly extends its scope to OT systems. OT environments in automotive and logistics facilities comprise heterogeneous devices, real-time control loops, and proprietary protocols - many not originally designed with cybersecurity in mind - making manual threat modeling both time-consuming and error-prone.
The transposition picture remains uneven. Belgium, Denmark, Greece, Hungary, Italy, Malta, and Slovakia have enacted NIS2 legislation, while Germany and France are still finalizing national laws. The European Commission has launched infringement proceedings against member states that missed the October 2024 implementation deadline. Separately, in January 2026 the Commission proposed targeted amendments to NIS2 to increase legal clarity and simplify compliance for companies operating in the EU.
Details
For plant operators in automotive and logistics, the requirements are specific. Manufacturers must implement continuous risk management processes tailored to OT environments, including:
- Identifying vulnerabilities in both legacy and modern systems
- Maintaining a detailed inventory of devices and data flows
- Deploying controls such as network segmentation and anomaly detection
Security incidents must be reported to national authorities within 24 hours of first awareness.
NIS2 imposes fines on essential entities of up to €10 million or 2% of global annual turnover, whichever is higher, according to the directive's enforcement provisions. Management bodies are personally accountable for compliance, and governance failures may result in temporary bans or disqualification of individuals from leadership roles.
The directive's supply chain provisions carry particular weight in automotive. NIS2 extends an "all-hazards approach" beyond an organization's own perimeter, making industrial leaders responsible for assessing the cyber hygiene of every third-party vendor, system integrator, and OEM that interacts with their operations. A single oversight - such as a technician using an unsecured USB to update a programmable logic controller (PLC) - can spread malware across a plant network. For this reason, NIS2 requires procurement and vendor management processes to embed security standards into contracts and requests for quotations.
Cybersecurity threat data underlines the urgency. In Q2 2025, global cyberattacks rose approximately 21% compared to the same period in 2024, with Europe recording the highest region-level increase, according to Schneider Electric's industrial cybersecurity research.
Open-Standards Retrofits as a Compliance Pathway
Rather than proprietary overhauls, regulators and industry groups are pointing to open standards as the practical vehicle for compliance. NIS2 is prescriptive in outcomes but not in methods - it mandates what must be achieved, not how. Organizations still need to align with frameworks such as IEC 62443, NIST CSF, or ISO 27001 to operationalize compliance.
NIS2 and IEC 62443 serve as complementary cornerstone frameworks: NIS2 sets the broad regulatory landscape, while IEC 62443 provides a granular technical blueprint for securing Industrial Automation and Control Systems (IACS). Together, they address both strategic policy requirements and detailed technical controls for ICS/OT environments.
IEC 62443 encourages a defense-in-depth approach in which each infrastructure level carries its own protection mechanisms. NIS2 defines legal obligations; IEC 62443 provides the technical framework. Integration between NIS2's risk management requirements and the risk assessment models under IEC 62443-3-2 covers data flow mapping, threat vector identification, and OT network segmentation. Because IEC 62443 is vendor-neutral, plants can retrofit existing control systems - robotic lines, sorting conveyors, warehouse management terminals - without locking into a single OEM's architecture.
The NIS2 directive envisions a European certification scheme, currently under development, for industrial infrastructures. That scheme is likely to be based on or derived from ISA/IEC 62443, meaning experience with the standard will directly support future certification requirements.
Field data supports the investment case. One European manufacturer that deployed centralized monitoring and structured incident response protocols aligned with NIS2 requirements recorded a greater than 40% improvement in threat detection and response times - strengthening compliance while reducing the risk of production disruptions.
Outlook
NIS2 is a stepping stone in the EU's strategic cybersecurity agenda. Further initiatives, increased requirements, and potentially higher fines are expected. With enforcement progressing, OEMs are rapidly reassessing the cybersecurity posture of their supply networks - not as a matter of preference but of legal obligation - and will be required to demonstrate due diligence and ongoing oversight of third-party cybersecurity risks. Mid-sized automotive and logistics plants that align OT architectures with IEC 62443 now are better positioned to absorb successive regulatory tightening without wholesale system replacement.
For related coverage, see our earlier reporting on EU Strengthens OT/ICS Cybersecurity under NIS2 Expansion and EU Strengthens Industrial Cybersecurity with New OT/ICS Rules.
