OT Security Solutions for Manufacturing: Protecting Industrial Control Systems
Securing operational technology environments requires a fundamentally different approach from IT security. You cannot simply install an endpoint agent on a PLC. You cannot patch a SCADA historian server on a 14-day cycle. You cannot take a production line offline to run a penetration test. Yet you must protect these environments from an increasingly sophisticated threat landscape. Effective OT security works within the constraints of production environments — using passive monitoring, network segmentation, and compensating controls to achieve protection without production impact.
Only 28% of UK manufacturing firms have deployed OT-specific security monitoring — leaving the majority blind to threats inside their production networks.
Core OT Security Capabilities for Manufacturers
A practical OT security programme for manufacturers is built on four pillars: asset visibility (you cannot protect what you don't know about — passive network discovery that identifies all OT devices, their OS, firmware versions, and network connections without disrupting operations); network segmentation (isolating production networks from corporate IT using industrial-grade firewalls, with strictly controlled, MFA-authenticated jump servers for any remote access); passive monitoring (OT-specific network monitoring that detects anomalous behaviour — unusual commands to PLCs, unexpected network connections, lateral movement attempts — without active scanning that could disrupt industrial protocols); and incident response planning (specific playbooks for OT security incidents that account for the production safety implications of taking systems offline).
Hadrian: Attack Surface Management for Manufacturing
Before securing the inside of your OT environment, it is essential to understand what is visible from the outside. Manufacturers are frequently surprised to discover that their production networks have internet-facing exposure — VNC servers, remote access systems, engineering workstations, or SCADA web interfaces that were intended for internal use but are accessible from the internet. Hadrian's external attack surface management platform, deployed by Kyanite Blue, continuously scans your organisation's internet-facing footprint to identify these exposures — including shadow IT that IT teams may not know about. Addressing internet-facing OT exposure is the highest-priority action for most manufacturers beginning their OT security journey.
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