Services

OT Security-by-Design & Review

Embedding Cybersecurity Into Industrial Systems From The Ground Up—Without Sacrificing Functionality Or Uptime

The Challenge

Too often, security is an afterthought in operational technology environments. Legacy systems, vendor-locked protocols, and minimal downtime windows mean that applying security retroactively is both risky and costly. Organizations face increasing pressure to secure OT from day one—yet lack frameworks and partners who understand the constraints of industrial systems.

Challenges include:

      • Integrating security requirements early in system design and procurement

      • Balancing security controls with safety, availability, and real-time performance

      • Coordinating across engineering, IT, and security stakeholders

      • Navigating conflicting vendor standards and legacy infrastructure

      • Lack of in-house expertise in secure OT system design principles

      • Regulatory pressure to prove security is part of the design lifecycle

When security isn’t baked in from the start, retrofits become more expensive, and vulnerabilities are harder to fix without disruption.

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The Solution

Defy Security helps organizations shift security left in their OT projects—embedding cybersecurity into system design, procurement, and integration processes. Our team works alongside your engineering and security stakeholders to ensure that controls are effective, appropriate, and operationally viable.

Our approach includes:

      • Reviewing system and network architecture for embedded risk

      • Defining secure-by-design requirements for new OT builds or upgrades

      • Conducting design reviews and threat modeling aligned to ICS/SCADA systems

      • Recommending architectural improvements that support both safety and security

      • Creating governance structures to ensure future designs follow secure principles

      • Partnering across vendors to ensure alignment with organizational security goals

With Defy, security isn’t bolted on—it’s engineered into your OT ecosystem from the beginning.

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Security isn’t something you add later—it’s something you architect from the start.

Your Proactive Security Partner

Customers work with Defy Security to simplify their buying experience. We provide initial assessment and analysis of technologies and custom proof of concepts. Our business analysis of licensing and financing structure saves you money. We oversee implementation and operation with staffing and services to ensure success.

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