Industrial systems were built to run for decades, not to fend off modern attackers. Billow's OT security services protect operational technology, ICS and SCADA environments asset visibility, IT/OT segmentation, monitoring and safe hardening securing the systems that run your operations without the downtime you cannot afford.
OT security (operational technology security) is the practice of protecting the hardware and software that monitor and control physical industrial processes — such as ICS (industrial control systems) and SCADA — from cyber threats. Where IT security protects data, OT security protects processes, equipment and safety.
OT environments are uniquely hard to defend. The systems are often decades old, run proprietary protocols, and were designed for a world where they were never connected to anything hostile. They frequently cannot be patched on demand or taken offline, and a careless security scan can cause the very outage you are trying to prevent. As IT and OT converge, these systems are increasingly exposed — but they still cannot be secured with standard IT tools and tactics.
Billow approaches OT cybersecurity the way it needs to be done. We start with passive discovery to see every asset without disrupting it, segment OT from IT so threats cannot cross over, monitor industrial protocols for signs of compromise, and harden systems in planned, safety-aware stages. The result is real OT security that respects uptime and safety — the two things you cannot trade away.
Our OT security services cover the full industrial estate from seeing what is on the network to containing, monitoring and responding to threats, without disrupting operations.
Passive discovery that maps every OT, ICS and SCADA device without touching or interrupting sensitive systems.
Segment OT from IT and the internet so an attacker who breaches the office network cannot reach the plant floor.
Monitoring built for industrial protocols and device behavior early warning on compromise without disruptive scanning.
Identify and prioritize OT risks, and remediate through change windows that respect safety and uptime.
Controlled, monitored remote access for vendors and engineers so maintenance does not become a way in.
Response plans and support built for OT where containing a threat has to account for physical safety and continuity.
When the systems under attack control physical processes, the stakes change downtime, damaged equipment, even safety. OT security protects operations, not just information, and it has to do it without becoming the disruption.
Everything is designed around keeping operations running safely security that never becomes the outage.
Most OT estates have devices no one has an accurate list of. Visibility is the first and biggest win.
Segmentation stops an office-network breach from ever reaching industrial systems.
Purpose-built OT monitoring watches for threats without the scanning that can knock fragile systems over.
We combine OT-native tooling with proven frameworks visibility, segmentation and monitoring designed for industrial systems, aligned to standards like IEC 62443 and NIST.
Passive discovery & inventory
Zones & conduits
IEC 62443 · NIST
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We passively discover OT/ICS/SCADA assets and map risks safely, without disrupting live systems.
We isolate OT from IT and the internet with segmentation and OT firewalls to contain threats.
We deploy OT-native threat monitoring for early warning across industrial protocols and devices.
We put OT-aware incident response in place containing threats while protecting safety and uptime.
OT security connects to the rest of your security program. These pair with it most closely.
The full security practice this sits within — endpoint, SIEM & SOAR, cloud security, information protection and more.
Feed OT monitoring into central detection and response, so IT and OT threats are seen together.
As OT data and management move to the cloud, cloud security protects the other side of the connection.
Most industrial estates have devices no one has a current list of. Tell us about your environment and we'll show you what OT visibility and segmentation would surface safely.
