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Operational Technology
Security Consultancy

Cyber security consultancy for the systems that run your physical operations. B5 Cyber helps manufacturers, utilities, and industrial organisations understand and reduce risk across OT and industrial control systems, and close the gap between IT and OT security.

OT & AI

Where AI meets OT, such as predictive maintenance and AI-driven process optimisation, we assess the new risks it introduces before it reaches your production environment.

Where IT Security Meets the Plant Floor

OT environments run on long-lived systems, safety constraints, and suppliers who need remote access. Applying IT security practices without adapting them can stop production. B5 Cyber brings structured, framework-based consultancy that respects how your operations actually work.

OT Risk Assessment

A consultant-led assessment of your OT and industrial control system environment against IEC 62443 and the NCSC Cyber Assessment Framework, with a prioritised, safety-aware remediation plan.

IT/OT Segmentation & Architecture Review

A review of how your production networks connect to the business and the outside world, covering zones and conduits, the industrial DMZ, and remote access paths.

OT Incident Readiness

OT-specific response planning and tabletop exercises, from ransomware spreading out of IT into production to compromised vendor remote access, with safety and continuity first.

OT Governance & Ownership

Clear policies, roles, and decision rights that bring engineering, operations, and IT together, so OT security has an owner and a plan, not just a set of tools.

Supplier & Remote Access Assurance

Assurance over the integrators, OEMs, and maintenance providers who connect to your plant, including how remote support is granted, monitored, and removed.

Regulatory Readiness

Preparation for NIS2, the UK NIS Regulations and the Cyber Security and Resilience Bill, and the CAF expectations placed on operators of essential services and their suppliers.

Consultancy-Led, Partner-Enabled

B5 Cyber provides the consultancy: independent advice, assessment, and the leadership to turn findings into a programme your teams can deliver. We are aligned to IEC 62443, the NCSC Cyber Assessment Framework, and NIST SP 800-82.

Where an engagement needs OT penetration testing, asset discovery and monitoring platforms, or other specialist products, we deliver them with selected partner organisations and service providers. B5 Cyber scopes the work, manages it, and interprets the results for you.

Consultancy-Led
Independent advice, assessment, and programme leadership from B5 Cyber
Partner-Enabled
OT testing and specialist products delivered through selected partners
Safety-First
Every activity agreed with your engineers before it touches production
Vendor-Neutral
Recommendations based on your risk, not on a product we sell

Every Industry, OT Focused

We work with organisations in every industry. Our specialism is wherever physical operations depend on connected systems.

Manufacturing Energy & Utilities Water Transport & Logistics Food & Beverage Pharmaceuticals & Life Sciences Healthcare & Facilities Critical Supply Chains

Secure the Systems
That Keep You Running.

Book a free 30-minute call. We will talk through your OT environment, your obligations, and where to start, with no commitment required.