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WATERFALL

An OT security architecture that combines Industrial Defender's active asset intelligence with hardware-enforced unidirectional data transmission. Built for NERC CIP, TSA, and NIS2-regulated environments.

THE PROBLEM

The OT Visibility Dilemma

OT operators need continuous OT asset visibility for NERC CIP-007, CIP-010, and CIP-013, but the network architecture prohibits bidirectional OT network connectivity.

Firewalls, jump servers, and VPNs attempt to bridge this gap, but each creates an inbound attack surface that regulators are increasingly scrutinizing.

Many OT incidents involving remote access were an attack through a 'secured' software-controlled connection. Hardware enforcement is categorically different.

The Architecture

How the Integration Works

IDC

Inside OT Perimeter: Active collection via SSH, Modbus, DNP3, S7. Agentless. Full device access. Operates inside the control network security boundary.

Waterfall Gateway

Waterfall Gateway

The Boundary: Hardware-enforced one-way data transmission. No return path –  physically impossible. Cannot be misconfigured to allow inbound traffic.

Many OT incidents involving remote access were an attack through a 'secured' software-controlled connection. Hardware enforcement is categorically different.

Overview

From Fragmented Visibility to Operational Confidence

A leading European electric distribution operator strengthened OT cybersecurity across its grid infrastructure, improved compliance with CIS Controls and NIS Directive requirements, and gained complete operational asset visibility using Industrial Defender.

The result was not just improved reporting. It was operational confidence.

With Industrial Defender, the organization transitioned from fragmented visibility and manual processes to continuous monitoring, automated asset discovery, configuration management, and defensible cybersecurity compliance across its operational technology environment.

Key Outcomes
Centralized OT asset visibility across all critical systems
Automated asset discovery and continuous inventory tracking
Real-time configuration monitoring and change detection
Enhanced compliance with CIS Controls and NIS Directive
Security event monitoring across the full OT environment
How Industrial Defender HeLPS

How does Industrial Defender support ongoing OT compliance monitoring?

The Compliance Dashboard provides real-time visibility into your compliance status across supported frameworks, helping teams track adherence, identify gaps, and prepare for audits without manual effort.

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The Decision

Why the European Utility Chose Industrial Defender

The operator had been using Industrial Defender since 2012 to monitor components of its Advanced Distribution Management System — including more than 200 assets across control centers, data centers, and regional distribution operations. As cybersecurity requirements increased, the organization expanded to the full platform.

Comprehensive OT Asset Visibility

Industrial Defender provides deep asset intelligence across operational environments, enabling utilities to identify risks and manage cybersecurity proactively.

Built-In NIS2 Compliance Reporting

The platform includes out-of-the-box reporting aligned to major cybersecurity frameworks, including CIS Controls and NIS Directive requirements.

Continuous Monitoring and Change Detection

Industrial Defender monitors configuration changes, software updates, and user activity across critical infrastructure in real time.

White-Glove Implementation and Support

Industrial Defender engineers provided customized dashboards, training and documentation, periodic reporting, and risk analysis guidance — accelerating deployment and maximizing value.

SIEM Integration

Industrial Defender integrated with the utility's SIEM environment, allowing correlation between OT asset intelligence and broader cybersecurity operations — improving threat detection and reducing response time.

Industrial Defender Product Team

Industrial Defender acts as a single source of truth for operational asset information across critical infrastructure — giving teams the visibility, control, and confidence to meet regulatory obligations while protecting uptime.

Industrial Defender acts as a single source of truth for operational asset information across critical infrastructure — giving teams the visibility, control, and confidence to meet regulatory obligations while protecting uptime.

How Industrial Defender HeLPS

How can I quickly find which OT assets are not reporting or have compliance exceptions?

Industrial Defender's Asset Overview gives you instant answers to your most common asset questions — including which assets are offline or not reporting, which have active exceptions, and where gaps exist — without building custom queries.

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The Solution

A Unified OT Cybersecurity Platform

The Industrial Defender platform enabled the organization to strengthen cybersecurity across eight operational domains.

Asset Inventory Management

  • Automated asset discovery
  • Continuous inventory updates
  • Lifecycle tracking

Patch & Software Management

  • Authorized software lists
  • OS version tracking
  • Patch monitoring

File Integrity Monitoring

  • Detection of unauthorized file changes
  • Continuous verification

Configuration Monitoring

  • Unauthorized configuration detection
  • Port and service monitoring
  • Baseline comparison

User Account Monitoring

  • Admin account tracking
  • Unauthorized access alerts
  • Account expiration enforcement

Security Event Monitoring

  • Login anomaly detection
  • Log aggregation and correlation
  • Malware monitoring

Network Intrusion Detection

  • IDS deployment across networks
  • Detection of unusual activity
  • Threat filtering

Firewall Rule Monitoring

  • Configuration tracking
  • Baseline enforcement
  • Change detection

Together, these capabilities created a unified OT cybersecurity platform — delivering continuous visibility, automated monitoring, and audit-ready compliance across the utility's entire operational environment.

Results

Stronger Visibility, Better Control, and Continuous Compliance

Centralized OT Asset Visibility

The organization established a single source of truth across operational assets, including servers, firewalls, control systems, and workstations. This centralized visibility allowed cybersecurity teams to identify risks faster and reduce blind spots across their environment.

Automated Asset Discovery and Monitoring

Industrial Defender enabled automated asset inventory discovery, ensuring that new devices and changes were continuously tracked without manual intervention.

Detect unauthorized devices
Track asset lifecycle changes
Maintain up-to-date inventory
Improve operational awareness

Continuous Configuration Monitoring

The utility implemented automated configuration monitoring to detect changes that could signal unauthorized activity or security degradation.

New listening ports
Unauthorized services
User account changes
Policy changes
Firewall configuration changes

Enhanced Compliance with CIS Controls and NIS Directive

Industrial Defender provided built-in reporting aligned to major frameworks, enabling the utility to continuously monitor compliance and demonstrate regulatory alignment with confidence.

CIS Critical Security Controls
NIS Directive Requirements
Operational cybersecurity best practices
NIS2 Best Practices

Security Event Monitoring Across OT Assets

The organization gained comprehensive visibility into security events across its environment, strengthening cybersecurity posture and improving response capabilities.

Unauthorized login attempts
Admin account changes
Remote access activity
Portable media usage
Software and patch changes
How Industrial Defender HeLPS

How does Industrial Defender help me understand and act on OT vulnerabilities?

Industrial Defender's Vulnerability Management view organizes all published, active vulnerabilities by urgency tier — factoring in whether an exploit is actively being used, automatable, and its severity impact. A running mitigation trend chart lets teams track progress over time.

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NIS2 Relevance

Why This Matters for NIS2-Focused Electric Utilities

Electric utilities face increasing cybersecurity threats alongside rapid grid modernization. Industrial Defender addresses these challenges by shifting utilities from reactive cybersecurity to proactive risk management.

Key Challenges
  • Improving system resilience
  • Increasing operational visibility
  • Strengthening cybersecurity posture
  • Supporting data-driven operations
  • Enabling integration with third-party systems
Industrial Defender Solutions
  • Improving system resilience
  • Increasing operational visibility
  • Strengthening cybersecurity posture
  • Supporting data-driven operations
  • Enabling integration with third-party systems