From Recommendation to Reality
Assessment reports produce recommendations. Recommendations require implementation. In OT environments, the gap between the two is where security programmes stall — because implementing controls in a live industrial environment requires a fundamentally different approach to doing the same thing in an IT environment.
NEXUS implements security controls in operational technology environments with production continuity as a first-order constraint. Every change is planned, tested, and staged. Nothing goes live in your OT environment without a tested rollback procedure and an agreed maintenance window.
A rollback procedure is not a contingency — it is a precondition. We do not begin implementation unless the path back is fully tested and ready to execute. This is not caution for its own sake. It is the difference between a change that carries risk and a change that is in control.
What We Implement
- Network Segmentation — Zone and conduit architecture, industrial DMZ, firewall rule sets for OT protocols
- Remote Access Controls — Secure remote access architecture, MFA for OT systems, vendor access management
- Endpoint Hardening — Engineering workstation lockdown, application whitelisting, removable media controls
- Patch Management — OT-safe patching process design and execution, firmware update management
- Monitoring & Detection — Passive OT network monitoring deployment, alert configuration, SOC/SIEM integration
- Backup & Recovery — Configuration backup for PLCs and SCADA, recovery procedure development and testing