Case Study
Resilient SCADA: Real-Time Threat Detection and Network Segmentation for a National Power Grid
The evolving OT risk in national power grid operations
Power transmission operators run highly distributed, always-on environments where grid stability, deterministic control, and uninterrupted electricity delivery are non-negotiable. Increasing connectivity between substations, control centers, enterprise IT, and remote engineering teams improves operational efficiency - but also expands the cyber-physical attack surface.
Legacy RTUs, unmanaged field devices, and historically flat SCADA communications create exposure to incidents that can disrupt dispatch visibility, manipulate telemetry, or introduce instability across the Bulk Electric System. At the same time, regulators now expect utilities to demonstrate internal monitoring, segmentation, and rapid response capabilities - not just perimeter defenses.
When one national transmission operator began modernizing its grid operations and remote engineering capabilities, a critical issue became clear: they lacked unified visibility into SCADA communications, had limited control over east-west traffic between substations, and could not produce consistent audit evidence aligned to evolving compliance expectations.
Shieldworkz delivered a resilience-first program that transformed fragmented monitoring into structured, real-time operational defense - without impacting grid availability.
About the Shieldworkz case study: what you’ll learn
This case study outlines Shieldworkz’s end-to-end engagement with a national transmission system operator managing more than 120 substations and multiple control centers supporting millions of consumers.
The Operator needed to:
Gain real-time visibility across SCADA and substation networks
Prevent lateral movement to critical grid-control assets
Secure vendor and engineering access without slowing operations
Align monitoring and controls to NERC expectations
Deliver measurable risk reduction without introducing latency or downtime
Shieldworkz implemented a multi-phased, operationally safe program combining passive monitoring, protocol-aware detection, staged network segmentation, and integrated incident response workflows.
Download this case study to see the step-by-step deployment approach, measurable outcomes, and governance model that enabled the Operator to shift from reactive protection to continuous, audit-ready resilience.
Why download the full case study
Download this case study to understand how Shieldworkz secured a live national power transmission environment without disrupting grid operations.
You’ll learn how the Operator:
Achieved deep visibility into SCADA communications and previously unmanaged field assets
Implemented segmentation that eliminated unsafe east-west network pathways
Detected anomalies in real time using industrial-protocol-aware monitoring
Strengthened regulatory alignment while reducing manual audit preparation
Improved operational confidence without impacting deterministic control performance
The case study also includes measurable metrics, deployment timelines, and executive-ready reporting used to justify continued grid modernization.
Key takeaways from the case study
Visibility must extend inside the grid: Perimeter defenses alone cannot detect abnormal SCADA behavior or internal misuse.
Passive monitoring protects operational integrity: Out-of-band telemetry collection enables insight without introducing latency or risk.
Segmentation reduces blast radius: Well-defined zones and conduits prevent localized events from becoming system-wide disruptions.
Detection must understand industrial protocols: SCADA-aware analytics dramatically reduce false positives while surfacing meaningful anomalies.
Compliance becomes easier when evidence is continuous: Automated telemetry and reporting eliminate last-minute audit preparation.
How Shieldworkz supports power & utilities operators end-to-end
Shieldworkz enables transmission and utility organisations across the full OT security lifecycle:
Continuous asset visibility across substations, control centers, and field networks
SCADA-specific anomaly detection aligned to real operational baselines
Safe implementation of zones-and-conduits segmentation architectures
Secure management of vendor and engineering remote access pathways
Integrated OT/IT incident response designed for operational continuity
Automated evidence generation mapped to regulatory and audit requirements
This model ensures cybersecurity strengthens grid reliability rather than introducing operational friction.
Ready to move from reactive to resilient?
If your organisation operates distributed grid infrastructure, SCADA-controlled environments, or modernization programs that require stronger internal security assurance, request the full Shieldworkz case study and schedule a complimentary discovery session.
We’ll demonstrate how a safety-first visibility and segmentation strategy can reduce cyber risk while preserving uptime and regulatory confidence.
Fill out the form to download the complete case study and claim a complimentary 30-minute consultation with a Shieldworkz OT specialist.
