NIS2 for operations leaders marks a fundamental shift in how cybersecurity compliance is implemented inside industrial organisations. As production environments become more connected, operational responsibility no longer stops at safety, uptime, and efficiency. Cyber risk is now inseparable from operational risk, and NIS2 makes that explicit.
While formal accountability under the NIS2 Directive sits with executive leadership and the board, operations teams play a decisive role in whether an organisation is actually compliant. Asset visibility, secure configurations, incident response readiness, and continuity planning all depend on how operational environments are designed, maintained, and monitored on a daily basis.
For operations leaders, NIS2 is not an abstract legal framework or an IT-only obligation. It directly affects how OT systems are accessed, how changes are managed, how suppliers are selected, and how disruptions are handled when incidents occur. Ignoring this operational dimension is one of the fastest ways for organisations to fail NIS2 audits in practice.
In this article, we break down what NIS2 for operations leaders really means, which responsibilities fall within the operational domain, and how compliance can be achieved without introducing unacceptable risk to production, safety, or availability.
NIS2 for Operations Leaders: From Responsibility to Execution
NIS2 for operations leaders introduces a practical shift in how cybersecurity responsibilities are handled inside operational environments. While compliance is often framed as a legal or IT challenge, the reality is that daily operational decisions determine whether NIS2 requirements are met or missed.
NIS2 is the European Union’s updated cybersecurity directive. It replaces the original NIS Directive from 2016 and is designed to strengthen the security and resilience of essential and important entities across a broad range of sectors, including manufacturing, energy, water, transport, health, and digital infrastructure.
Unlike the original directive, NIS2 places personal accountability on senior management. That includes requirements for board-level oversight, demonstrable risk management, and timely incident reporting. Failure to comply can lead to fines, liability, and reputational damage.
For many organisations, NIS2 for operations leaders means formalising responsibilities that already exist in practice. Asset visibility, access control, change management, and incident readiness are operational tasks by nature, even when governance is defined elsewhere.
But what’s often overlooked is this: while the board is accountable, it’s the operations teams that must execute many of the required actions.
Cybersecurity is now a shared responsibility across departments, and operations sits at the centre.
From digital transformation to cyber risk exposure
Operations teams have embraced digitalisation to improve performance, visibility, and control. This shift has brought many advantages, such as:
- Improved predictive maintenance and uptime
- Real-time monitoring of energy consumption
- Remote access to sites and systems for efficiency
- Faster decision-making through data analytics
But with greater connectivity also comes greater exposure.
Many factories, utilities, and transport networks now rely on:
- Cloud-connected PLCs and sensors
- Remote vendor access to critical systems
- IT/OT convergence to streamline operations
- Shared infrastructure with limited segmentation
These trends offer efficiency, but they also introduce new attack surfaces. Vulnerabilities are often embedded in operational technology. Protocols such as Modbus or BACnet, which lack built-in encryption or authentication, are still widely used in production environments.
The challenge with NIS2 for operations leaders is translating policy into environments where availability and safety are non-negotiable. OT systems cannot always be patched, restarted, or redesigned on demand, which means compliance must align with operational constraints.
According to CISA’s joint guidance on “Secure by Demand” principles, attackers often do not target organisations directly. They target specific OT products with known weaknesses, reused across industries. That puts operations squarely in the firing line.
The role of operations in meeting NIS2 requirements
Article 21 of the NIS2 Directive outlines a set of technical and organisational measures that entities must implement. Many of these fall within the operational domain.
Here’s how operations leaders contribute to compliance:
1. Asset inventory and visibility
You cannot protect what you don’t know exists. NIS2 requires organisations to maintain an accurate and up-to-date inventory of systems and assets, including OT and ICS (Article 21.2a).
Operations teams need to:
- Identify and document all industrial assets (PLCs, HMIs, sensors, gateways)
- Monitor network traffic for new or unauthorised devices
- Detect shadow systems and legacy equipment
- Include remote locations and air-gapped environments in inventory
This step forms the foundation for risk assessment and threat detection.
2. Business continuity and incident response
Operations is responsible for ensuring physical processes run smoothly, even during incidents.
NIS2 requires:
- Documented response procedures for cyber events
- Regularly tested backup and recovery plans (Article 21.2d and e)
- Coordination between IT, OT, and legal in case of escalation
Operational input is essential to define what must keep running and how to minimise downtime during cyber disruptions.
3. Configuration and access control
Many OT systems still run on outdated software or insecure configurations. NIS2 demands a shift toward secure configurations and access policies by default (Article 21.2b and Article 21.2f).
This includes:
- Removing default or hardcoded passwords
- Enforcing role-based access controls
- Disabling unused ports and services
- Implementing patch management or compensating controls
While IT may lead on governance, operations teams are responsible for enforcing these changes in practice.
4. Monitoring and detection
NIS2 stresses the need for ongoing monitoring and anomaly detection (Article 21.2h).
For operations, this means:
- Deploying passive monitoring tools that understand OT protocols
- Establishing baselines for “normal” behaviour in process environments
- Detecting and escalating any unusual activity across the OT network
Detection cannot rely on IT logs alone. OT-specific visibility is essential to detect process anomalies and suspicious commands.
5. Supply chain security
Operational leaders often select and manage suppliers, integrators, and OEMs. NIS2 includes requirements for supply chain cybersecurity and third-party risk management (Article 21.2j).
You must:
- Validate that vendors meet security and continuity requirements
- Review configurations of third-party software and tools
- Ensure contracts include incident handling and disclosure responsibilities
Procurement decisions are now also cybersecurity decisions.
When compliance meets the factory floor
Translating policy into practice is rarely simple, especially in operational environments where uptime and safety come first.
Operations teams face unique challenges:
- OT systems often run continuously and cannot be restarted for patching
- Many devices were never designed with security in mind
- Remote or older sites may lack documentation or access procedures
- Any change introduces operational risk and must be fully tested
That is why NIS2 compliance in operations must be practical and grounded in operational reality.
It is also where the right tools can help. Platforms like Nautilus provide passive, non-intrusive monitoring of OT networks and deliver:
- Real-time asset discovery
- Anomaly and threat detection
- Configuration and access insights
- Financial risk scoring and issue prioritisation
- Executive-level reports for audits and decision-making
By making these insights accessible to both engineers and executives, it becomes easier to bridge the gap between boardroom accountability and shop-floor implementation.
What you should do now
If you are an operational leader, you are already responsible for many of the systems and processes that NIS2 covers, even if you are not yet formally involved in compliance efforts.
Here is how to prepare:
- Review how cybersecurity is currently managed in your OT environments
- Map critical processes, locations, and digital assets
- Work with IT and legal to align on incident response procedures
- Evaluate suppliers and service providers based on cyber maturity
- Document what is in place, identify what is missing, and close the gaps
NIS2 is not just a regulatory update. It is a structural change in how we think about operational risk, system safety, and shared responsibility.
Preparing for NIS2 for operations leaders requires visibility across OT assets, risks, and dependencies. Without clear insight into what is running, who has access, and where vulnerabilities exist, compliance remains theoretical rather than actionable.
Want to know how your operations align with NIS2?
Nautilus OT helps mid-sized European companies uncover vulnerabilities, monitor OT networks in real time, and deliver actionable reporting for compliance.
If NIS2 for operations leaders applies to your organisation, gaining clarity now prevents disruption later. To learn more or schedule a baseline assessment, contact us at:
jeroen@nautilus-ot.com
