Operational technology (OT) powers the physical systems behind critical infrastructure, from energy grids and railways to manufacturing lines and oil rigs. But as these systems become more connected, they also become more exposed.
A cyberattack on OT can cause far more than data loss, it can shut down entire global operations or even endanger lives. That’s why OT cybersecurity has become one of the most urgent priorities for industries worldwide.
This week we look at some of the companies leading the way in this critical field. From AI-powered threat detection to real-time monitoring of industrial networks, they’re helping organisations stay one step ahead of attackers. Whether it’s protecting legacy systems or enabling secure digital transformation, these platforms are building a stronger, safer future for the world’s most vital infrastructure.
10. SCADAfence, a Honeywell Company
- Headquarters: Tel Aviv, Israel
- CEO: Elad Ben-Meir
- Founded: 2014
SCADAfence is a subsidiary of Honeywell that provides cybersecurity for large-scale industrial networks with a focus on continuous monitoring, risk analysis and anomaly detection.
Its platform helps organisations with complex OT networks to secure manufacturing lines, water treatment plants and other critical infrastructure by identifying threats without disrupting operations.
Known for its lightweight, non-intrusive deployment, SCADAfence gives security teams full visibility over their OT environments, helping them detect vulnerabilities and respond to attacks early.
9. Darktrace
- Headquarters: Cambridge, UK
- CEO: Jill Popelka
- Founded: 2013
Darktrace uses AI to deliver proactive security protection for organisations needing critical industrial cybersecurity services. Its platform, known as the Industrial Immune System, uses advanced intelligence to learn what "normal" looks like for each asset and network, allowing it to then detect anomalies and threats in real time. It doesnât require prior knowledge of threats, instead actively working to spot them as they happen. This makes it especially valuable in fast-changing, complex OT environments where visibility is often limited and attacks can happen quickly.
8. Check Point Software
- Headquarters: Tel Aviv, Israel
- CEO: Gil Shwed
- Founded: 1993
Check Point protects OT environments using technology proven in enterprise cybersecurity. The company is an advocate for AI-powered and cloud-delivered security solutions and provides firewalls, intrusion prevention and network segmentation tools designed specifically for complex industrial systems. Its ICS Security Suite gives users full control over OT traffic and enables precise policy enforcement, helping organisations prevent cyberattacks and meet regulatory requirements across critical infrastructure sectors.
7. Trend Micro
- Headquarters: Tokyo, Japan
- CEO: Eva Chen
- Founded: 1988
Trend Micro integrates IT and OT cybersecurity into one platform, protecting industrial systems from malware, ransomware and advanced threats. Its Deep Security for Industrial Control Systems safeguards critical assets without disrupting operations and provides services around vulnerability protection, segmentation and policy enforcement. The platform offers layered protection that includes virtual patching, behaviour monitoring and anti-malware, helping reduce risk in critical infrastructure sectors like manufacturing, oil and gas, and energy.
6. Armis
- Headquarters: Palo Alto, California, US
- CEO: Yevgeny Dibrov
- Founded: 2015
Armis protects an organisationâs entire attack surface, from the ground to the cloud, to mitigate cyber risk exposure in real time. It delivers agentless security that identifies every connected device in an OT or IoT network, even legacy assets that can often be vulnerable. Armis provides real-time monitoring and risk assessment, helping security teams stop attacks before they reach critical systems. Its solutions are especially useful in environments where installing agents isnât possible, offering full asset visibility and control without disruption.
5. Claroty
- Headquarters: New York, US
- CEO: Yaniv Vardi
- Founded: 2015
Regularly recognised as a security leader by the likes of Gartner, Claroty is built specifically for industrial, healthcare, public sector and commercial OT networks. Its platform allows users to discover assets, assess risks and segment networks to reduce exposure in cloud and on premise. Clarotyâs key strength lies in its deep protocol understanding and fast deployment. It integrates with existing security operations tools, enabling centralised management and proactive threat detection across industrial sites.
4. Nozomi Networks
- Headquarters: San Francisco, California, US
- CEO: Edgard Capdevielle
- Founded: 2013
Nozomi Networks offers AI-powered solutions to protect global critical infrastructure from the growing risk of cyber threats. The company helps secure OT and IoT environments by combining network visibility, threat detection and operational insights. Its Guardian platform continuously monitors industrial networks to spot anomalies, vulnerabilities or cyberattacks, excelling in environments like utilities and transport where uninterrupted operations are critical. Nozomiâs real-time intelligence helps teams respond quickly and prevent downtime.
3. Fortinet
- Headquarters: Sunnyvale, California, US
- CEO: Ken Xie
- Founded: 2000
Fortinet protects OT infrastructure with a Security Fabric approach that integrates IT and OT defences. Its OT Security Platform is an extension of its well-known Security Fabric, providing a broad, integrated and automated platform. This supports zero-trust access, AI-driven detection and real-time monitoring, helping organisations reduce risk across their operations. Fortinetâs firewalls and switches are widely used in industrial settings, and its solutions support compliance and secure digital transformation.
2. Honeywell
- Headquarters: Charlotte, North Carolina, US
- CEO: Vimal Kapur
- Founded: 1906
Honeywell is a pioneer in industrial automation and a trusted name in OT cybersecurity. With over a century of experience in manufacturing and process control, the company brings deep domain expertise to securing critical infrastructure. Its cybersecurity solutions are designed to protect complex and often outdated industrial environments against evolving cyber threats.
Its Cyber Insights platform provides real-time visibility into industrial networks, identifying vulnerabilities, tracking configurations and detecting anomalous behaviour. This allows operators to manage cyber risk proactively without disrupting operations.
Honeywell offers secure remote access, enabling authorised personnel to perform maintenance or updates from offsite locations without opening the network to attackers. It also helps support legacy systemsâa key challenge in industries like oil and gas, chemicals and energy, and offers ongoing monitoring, incident response and compliance with regulations such as NIST, NERC CIP and IEC 62443.
1. Dragos
- Headquarters: Hanover, Maryland, US
- CEO: Robert M. Lee
- Founded: 2016
Dragos is widely regarded as the global leader in industrial cybersecurity, with a singular focus on protecting OT and industrial control systems. Founded by former intelligence and military cyber experts, the company is purpose-built to defend critical infrastructure from increasingly sophisticated threats targeting sectors such as utilities, energy, manufacturing and transportation.
Its Dragos Platform offers comprehensive asset identification, network mapping, threat detection and incident response, all tailored specifically for OT environments. It provides rich contextual intelligence, allowing security teams to understand the scope and severity of threats specific to industrial systems. The platform integrates seamlessly with existing workflows, offering visibility across even highly segmented or legacy networks.
Dragos is well-known for its intelligence-driven approach. Its team has uncovered and published research on several high-profile threat groups targeting critical infrastructure, such as ELECTRUM, XENOTIME and KAMACITE. This threat intelligence is built into its platform and solutions, enabling organisations to act proactively against emerging risks.
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