Top OT Security Companies in Europe

Operational technology (OT) security focuses on protecting the systems that monitor and control physical processes. These include industrial control systems (ICS), supervisory control and data acquisition (SCADA) networks, connected machinery and industrial communication systems. Top OT Security Companies provide services such as security assessments, vulnerability testing, network monitoring, threat detection and incident response. Their work helps manufacturers, energy providers, transport operators and other infrastructure organisations identify weaknesses across operational environments. Unlike conventional IT security, OT protection must account for equipment that runs continuously and supports essential physical operations. Security measures must therefore reduce cyber risks without disrupting production, safety or system availability.

Enterprise Security Magazine recognized NCC Group as its Top OT Security Company in Europe for 2026. The recognition highlights its work in operational technology cybersecurity, particularly its ability to connect technical security assessments with industrial engineering requirements. The category acknowledges the importance of protecting industrial systems while maintaining reliable operations. Top OT Security Companies play an important role in helping organisations manage risks across connected infrastructure, industrial networks and critical operational assets.

The growing connection between industrial equipment and enterprise IT networks has expanded the potential attack surface for industrial organisations. Remote access, connected devices, digital manufacturing and automated operations create new entry points for cyber threats. Attacks on these environments can affect production, physical safety and essential services, making security a business and operational priority. Top OT Security Companies help organisations respond to these concerns by identifying vulnerabilities and strengthening protection across legacy and modern systems. Demand also reflects the need to manage cyber risks as industrial operators modernise infrastructure without replacing every existing asset.

NCC Group received the recognition for its combination of technical assessments, engineering knowledge and practical security guidance. Its services include attack surface mapping, threat modelling, embedded firmware reviews, vulnerability assessments and penetration testing. The company also provides Network Detection and Response for OT, with monitoring capabilities designed to identify unusual activity across industrial networks. Its work with a North American rural electric cooperative identified unauthorised access to critical energy management systems and led to recommendations for stronger privileged access controls and multifactor authentication. These capabilities demonstrate how Top OT Security Companies can connect technical findings with security improvements suited to industrial operations.

Organisations should assess whether a provider understands their industrial processes, equipment limitations and operational risks. Experience with legacy systems, SCADA environments and industrial communication protocols is particularly important. Security assessments should also consider the potential impact of vulnerabilities on production, physical safety and regulatory obligations. Organisations should examine how providers prioritise risks, communicate findings and support remediation. Top OT Security Companies should offer recommendations that fit existing infrastructure and operating requirements rather than relying on security measures that could create unnecessary downtime or operational disruption.

NCC Group received the recognition for its technical assessments, engineering knowledge and practical security advice. Its services include attack surface mapping, threat modelling, embedded firmware reviews, vulnerability assessments and penetration testing. The company also offers Network Detection and Response for OT to monitor industrial networks and detect unusual activity. In one project with a North American rural electric cooperative, NCC Group found unauthorised access to critical energy management systems and recommended stronger privileged access controls and multifactor authentication. These services show how Top OT Security Companies can identify security risks and help industrial organisations address them.