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Critical Infrastructure and OT Security

The challenge

Critical infrastructure — energy, water, manufacturing, transport — is permanently in the sights of cybercriminals and state actors. OT environments cannot simply be shut down for updates or patches: downtime means production stops, safety risks or societal disruption.

OT requires a fundamentally different approach from IT. Availability always comes first, systems are often outdated, and there is frequently little visibility into what is actually running on the network. Without that insight, security is impossible.

The NIS2 Directive requires organizations in critical sectors to take demonstrable measures. Failure to comply can lead to executive liability and substantial fines.

Effective OT security requires asset discovery, targeted implementation, compliance assurance and 24/7 monitoring — all aligned with operational reality.

Asset discovery & visibility

You cannot secure what you do not know. In many OT environments, there is no complete and up-to-date overview of all connected systems, devices and connections. That is not the exception — it is the norm.

Asset discovery maps your entire OT network: from industrial controllers and sensors to legacy systems and external connections. Without disrupting operations. The result is an up-to-date overview of what is running, which vulnerabilities exist and where the greatest risks are.

That insight is the foundation for everything: targeted security, well-founded risk decisions and demonstrable compliance towards regulators.

From insight to a secure architecture

With a complete picture of your OT environment as the starting point, we design a security architecture that fits your operational reality. Not a generic blueprint, but a design that takes your processes, systems and continuity requirements into account.

This means network segmentation to limit the spread of incidents, a clear separation between IT and OT, and security measures that never put operational availability at risk. Where needed, existing infrastructure is hardened, vulnerabilities are prioritized and mitigations are planned pragmatically.

The design forms the basis for a controlled, step-by-step implementation — without operational risk.

Detection & response: stopping threats before they cause damage

OT environments are increasingly targeted by focused attacks. State actors, ransomware groups and opportunistic attackers know that critical infrastructure is under high pressure to pay or capitulate quickly. Cybersecurity around OT environments is often underdeveloped.

Detection in OT requires different techniques than in IT. Traditional security tooling does not recognize OT protocols and, when used incorrectly, can disrupt operations. We monitor your OT environment 24/7 for abnormal behavior, unauthorized connections and early attack indicators — passively, with no impact on your processes.

When a threat is detected, a coordinated response follows immediately. With knowledge of both the technical and operational context, we ensure that the right measures are taken — quickly, precisely and without unnecessary disruption to business operations.

Network monitoring & packet capture

Effective OT security requires deep insight into all network traffic down to packet level. Many threats only become visible when the actual data traffic is analyzed, not just the metadata.

Specialized network TAPs and packet capture solutions provide passive, non-disruptive visibility into industrial networks without any risk of interfering with operational processes. Security and operations teams therefore always have reliable, high-fidelity data for real-time analysis, forensic investigation and threat detection.

After an incident, full packet history is also essential for reconstruction and reporting.

The role of NIS2

NIS2 requires organizations in critical sectors to take demonstrable and structural cybersecurity measures, and makes executives personally accountable for non-compliance. The directive sets concrete requirements for risk management, incident reporting, access security and supply chain security.

For OT environments, this means that asset inventory, continuous monitoring and a documented incident response are no longer optional, but a legal obligation. Organizations that take NIS2 seriously are not only building compliance, but a demonstrably resilient organization that earns the trust of auditors, regulators and supply chain partners.

MedSec — Medical security

Healthcare institutions are among the most vulnerable and, at the same time, most critical environments for cybersecurity. Connected medical devices, from MRI scanners to infusion pumps and monitoring systems, often run on outdated software, are rarely patchable and cannot be taken offline for maintenance.

An attack on healthcare infrastructure directly affects patient safety and can create life-threatening situations. Full visibility into all connected medical and IoT devices, combined with continuous risk monitoring and automated threat detection, is therefore not optional but an absolute necessity for every healthcare institution that takes patient safety seriously.

Armis
Asset intelligence and security platform specialized in discovering and securing all connected devices across OT, IoT and IT environments, without agents or operational disruption.

NVISO
European cybersecurity company with 300+ specialists, fully focused on protecting organizations against advanced cyber threats, from IT/OT Security Operations to incident response.

Nieuwe Vogels
Specialized OT security partner guiding organizations in critical infrastructure from strategy to execution, from gap analysis and infrastructure design to implementation and NIS2 compliance.

Profitap
Provider of network visibility solutions for critical and industrial environments, with a focus on network TAPs, packet capture and traffic analysis.

Ready for the threats of tomorrow? We are ready for it. Get in touch today.