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OT Cyber Security

Securing operational technology environments without compromising safety or uptime.

Key Challenges in OT Cyber Security

Traditionally, OT environments were separated from corporate IT networks, which simplified their security. The growing convergence of Industrial Control System (ICS) environments with external digital infrastructure, including remote access, data analytics and corporate IT, has made securing these environments significantly more complex and critical. Denver Technology’s OT cyber security services address this complexity directly, keeping your operational technology safe, secure and operational.

Our designs are aligned with the Purdue network model and incorporate appropriately segmented firewalls, De-Militarised Zones (DMZs), controlled jump-hosts and out-of-band management and monitoring. Backed by ICS-specific certifications and hands-on experience across both IT and OT environments, we help asset intensive industries address cyber security strategy and governance, from network and security architecture through to independent benchmarking and ongoing security operations.

Hidden Assets and Exposure Gaps

Many organisations lack complete visibility of operational assets, connections and vulnerabilities, making cyber risk harder to identify and manage.

Control Weaknesses in Industrial Environments

OT environments often contain legacy protocols, inconsistent segmentation or weak access controls that increase risk and complicate remediation.

Security Activity Without Operational Context

Applying cyber measures without a defined OT strategy leads to poor prioritisation, fragmented controls and limited long-term resilience.

Safety, Capability and Governance Pressures

Effective OT security requires more than technology, it demands operational understanding, leadership alignment and structured governance across industrial environments.

Tailored for industrial resilience, this framework reviews OT assets, controls and governance supporting secure operational performance.

OT Context
Definition

Industrial architecture and security artefacts are reviewed before assessment.

Field and Stakeholder Discovery

Operations, engineering and cyber participants discuss exposure points, constraints and priorities openly.

Control Posture Review

Asset visibility, network protection, and governance are examined.

Risk
Interpretation

Analyse collated quantitative and qualitative data for findings report & presentation.

Leadership Outcome Session

OT findings and actions are presented to leadership for prioritisation decisions confidently.

Structured deliverables that strengthen industrial security and resilience.

Executives gain a targeted set of outputs that improves visibility of industrial risk, clarifies governance duties and supports more resilient protection across OT environments.

OT Security Assurance Pack

Several structured artefacts are prepared to support OT cyber uplift, including:

OT Cyber Security Assessment Report

A service-specific report is prepared to support risk reduction and governance improvement in industrial settings, including:

Better Resilience Starts Here

Frequently Asked Questions

At Denver Technology, we understand that investing in advanced technology comes with important questions. Our Frequently Asked Questions section is here to provide quick, clear answers about our products, capabilities, services, and support.

01 Why is OT cyber security different to IT cyber security?

OT environments prioritise safety and continuous operation over data confidentiality, so security controls have to be designed without compromising plant uptime or worker safety.

The Purdue model is an industry-standard reference architecture for segmenting industrial networks into security zones. Aligning to it ensures appropriate separation between corporate IT, OT and the production floor.

Yes. We conduct independent evaluations of existing OT architecture and policy frameworks, benchmarked against standards including NIST and the Essential 8, to identify gaps and prioritise remediation.

We design secure remote management capability using controlled jump-hosts and out-of-band networks, allowing authorised access without expanding the attack surface.

Both. We deliver end-to-end, from network and security architecture through to implementation, third-party solution assessment and ongoing security operations support.

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