Asset inventory and network architecture review across your industrial control systems, mapped against IT/OT boundary and zone-and-conduit segmentation principles
Industrial Control Systems Security
ISO/IEC 62443 Compliance
Industrial Control Systems Security
ISO/IEC 62443 Compliance
Secure Your Industrial Control Systems Against a Standard Built for OT, Not Adapted From IT
ISO/IEC 62443 is the reference standard for securing industrial automation and control systems, and unlike a typical ISMS certification, it's assessed at multiple levels, security management systems, system requirements, and component or product-level security, often through specialized certification schemes rather than a single generalist audit. We assess your OT environment against the relevant parts of the 62443 series, close the gaps a specialized assessor would flag, and get you compliant without shutting down the operational systems the standard is meant to protect.
The challenge
The Problem We're Usually Called In For
The Problem We’re Usually Called In For
Most industrial organizations have IT security programs that are mature, and OT environments that were never built with the same rigor, largely because industrial control systems prioritize availability and safety in ways that standard IT security practices don’t always account for. A firewall separates IT and OT networks on paper, but a legacy engineering workstation has a direct connection nobody documented. Patch management exists for IT systems but industrial controllers run years-old firmware because patching risks disrupting production.
We work with OT Security Managers, Plant Engineering Directors, CISOs, and Heads of Manufacturing at organizations operating industrial control systems, particularly in manufacturing, energy, water, and critical infrastructure. Some of you need to demonstrate 62443 alignment to a customer or regulator. Some are building an OT security program for the first time as IT/OT convergence expands the attack surface. Others are addressing findings from an incident or a previous assessment.
Scope
What the Engagement Covers
Gap analysis against the relevant parts of the 62443 series, including security management system requirements (62443-2-1), system security requirements (62443-3-3), and component-level considerations (62443-4-1 / 4-2) where applicable
Risk assessment specific to industrial control systems, weighing safety and availability alongside confidentiality and integrity
Network segmentation and zone/conduit design review, structured around how OT traffic actually needs to flow without compromising security boundaries
Patch and vulnerability management process review, built around realistic maintenance windows rather than IT-standard patching cadences
Remote access and vendor connectivity review, since third-party access to OT environments is a common and often under-assessed risk
Incident response and recovery planning specific to OT environments, where downtime carries safety and production implications beyond data loss
Documentation preparation aligned to the specific certification scheme or customer requirement you're pursuing
Engagement
How the Engagement Works
Step 01
Discovery & Scoping
Step 02
Asset Inventory & Risk Assessment
Step 03
Gap Assessment
Step 04
Build & Remediation
Step 05
Assessment & Certification Support
A short call to understand your industrial environment, which parts of the 62443 series are relevant, and what's driving the engagement. We agree on scope before assessment begins.
We map your OT assets and network architecture, and assess risk with safety and availability weighted appropriately alongside security.
We benchmark current practice against the relevant 62443 requirements and flag exactly what's missing, weak, or undocumented.
We help close the gaps, from network segmentation to vendor access controls, sequenced around your maintenance windows so production isn't disrupted.
Where a formal certification scheme applies, we prepare your documentation and coordinate with the specialized certification body relevant to the specific part of the standard in scope.
Outcomes
Proof, Not Promises
Manufacturing plant with a legacy control system network:
the asset inventory found an engineering workstation with an undocumented direct connection bridging the IT and OT networks, bypassing the segmentation the organization believed was in place. Closing that connection addressed a significant risk that had existed for years without detection.
Energy sector operator responding to a customer requirement for 62443 alignment:
the remote access review found three vendor connections to OT systems with standing access and no session monitoring. Restructuring vendor access to be time-bound and monitored closed a gap that had never previously been assessed.
FAQ
Questions We Get Asked Before Signing
Not exactly. The 62443 series includes multiple parts covering security management systems, system requirements, and component or product-level security, and certification is often carried out through specialized industrial cybersecurity certification schemes rather than a single generalist ISMS audit. We help clarify which parts and certification pathway are relevant to your organization.
ISO 27001 is built around IT information security priorities, primarily confidentiality, integrity, and availability of data. 62443 is purpose-built for industrial control systems, where safety and operational availability often outweigh confidentiality, and where legacy equipment, real-time constraints, and physical safety implications require a fundamentally different risk approach.
Typically four to eight months depending on the size and complexity of your OT environment and which parts of the 62443 series are in scope.
We treat that as a primary constraint, not an afterthought. Assessment work is scheduled around production windows, and remediation is sequenced to avoid unplanned downtime on systems where availability is safety-critical.
No, any organization operating industrial automation and control systems can benefit, though the urgency and any regulatory expectation is often higher for critical infrastructure and heavily regulated manufacturing sectors.
You keep the full documentation and control implementation. We recommend ongoing reassessment as OT environments evolve, particularly with new equipment, vendors, or IT/OT convergence projects, which we can support directly.
Ready to Secure OT Without Treating It Like IT?
Industrial control systems fail differently than IT systems do, and the consequences are physical, not just digital. ISO/IEC 62443 compliance proves your security program actually accounts for that difference.
Schedule a 30-minute OT security readiness call and find out where your gaps are. When you reach out, we'll ask for your name, work email, company, role, and a brief note on your industrial environment. That's enough for us to come prepared.