NERC-CIP compliant OT/ICS cybersecurity monitoring for utilities

Yes. If NERC-CIP compliance is the primary driver, I would not choose a product simply because it is marketed as an “OT security platform.” You need a platform that can continuously produce the asset, configuration, vulnerability, monitoring, and audit evidence your CIP program needs.

My shortlist

Gartner's current 2026 CPS Protection Platforms research includes Claroty, Dragos, Nozomi, Armis, Microsoft, Cisco, Fortinet, Tenable, Palo Alto and others, so these are legitimate enterprise alternatives rather than niche products.www.gartner.com

🥇 My pick: Nozomi Networks for NERC-CIP compliance monitoring

If your question is specifically “Which product would I put in front of a utility whose biggest pain is proving NERC-CIP compliance?”, I'd put Nozomi Networks first on the evaluation list.

The reason is that Nozomi explicitly builds its NERC-CIP workflow around automated asset inventory, vulnerability mapping, behavioral monitoring, risk scoring, threat detection, forensic data capture and audit-ready evidence. Its NERC-CIP implementation also specifically addresses CIP-015-1 internal network security monitoring, including anomaly detection, evaluation, retention and data integrity.www.nozominetworks.com

That matters because NERC isn't asking merely, “Do you have an OT security product?” Your program needs defensible evidence around the controls.

For example, CIP-010-4 specifically addresses configuration change management and vulnerability assessments and is mandatory subject to enforcement; its stated purpose includes preventing and detecting unauthorized changes to BES Cyber Systems.www.nerc.com

And NERC's CIP standards now include CIP-015 internal network security monitoring, which is particularly important for the architecture you're evaluating.www.nerc.com

🥈 Dragos if security is more important than compliance workflow

I'd choose Dragos if your priority is:

• nation-state/ICS threat detection
• electric-grid-specific threat intelligence
• sophisticated incident investigation
• threat hunting
• managed OT monitoring
• protecting high-impact BES environments

Dragos explicitly maps its platform and services to NERC-CIP requirements from CIP-002 through CIP-015, covering asset visibility, vulnerability management, threat detection and incident response.www.dragos.com

Its network monitoring is particularly strong for utilities: passive collection, ICS-aware deep packet inspection, and support for hundreds of industrial/IT protocols. Dragos also specifically describes its capabilities for CIP-015 internal network security monitoring.www.dragos.com+1

So I'd characterize the decision this way:

Nozomi = “Help me continuously monitor and demonstrate compliance.”
Dragos = “Help me detect and defeat sophisticated OT attackers.”

That's a simplification, but it's a useful one when evaluating the two.

🥉 Claroty if you want the broadest platform

Claroty would be my third—and potentially first—choice if your environment extends beyond traditional power OT.

Claroty has unusually broad coverage across:

• OT/ICS
• IoT
• building-management systems
• remote/vendor access
• vulnerability/exposure management
• asset inventory
• configuration/change monitoring

Its NERC-CIP mapping is extensive. Claroty documents support for CIP-002, CIP-005, CIP-007, CIP-008, CIP-009, CIP-010, CIP-012 and CIP-013, including configuration baselines, unauthorized-change detection, vulnerability assessment and security-event monitoring.blog.claroty.com

Its current platform also supports on-prem, cloud and hybrid deployment, which can be important when dealing with BES Cyber Systems and environments where you don't want operational data leaving particular security zones.web-assets.claroty.com

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What I'd actually architect

I would not expect one product to magically make the utility NERC-CIP compliant.

I'd build something like:

OT/ICS sensors → OT security platform → SIEM/SOC → GRC/evidence repository → NERC-CIP audit package

For example:

Option A — Compliance-first

Nozomi + SIEM + GRC/evidence management

Best when audit readiness and continuous evidence collection are the dominant requirements.

Option B — Security-first

Dragos + SIEM/SOC + NERC-CIP GRC

My preference for a large transmission/generation utility with a mature security operation.

Option C — Broad CPS program

Claroty xDome/CTD + Secure Access + SIEM/GRC

Especially attractive when you need OT visibility and third-party/remote-access controls across a heterogeneous environment.

The important point is that NERC itself identifies multiple CIP obligations beyond network monitoring—including system security management, incident response, recovery, information protection, supply-chain risk management and physical security. www.nerc.com No OT monitoring product alone satisfies all of those organizational and procedural requirements.

The POC I'd run

If you're evaluating these vendors, I would make the proof-of-concept NERC-CIP-driven, rather than asking each vendor for a generic OT demo.

Give each vendor the same representative environment and require them to demonstrate:

1. Automatic BES asset discovery
2. Asset categorization and inventory
3. Purdue/ESP/network-flow mapping
4. Passive monitoring without disrupting PLCs/IEDs/RTUs
5. Firmware/software/configuration identification
6. Vulnerability-to-asset correlation
7. Configuration baseline creation
8. Detection of unauthorized configuration changes
9. Transient/removable-device detection
10. CIP-007 security-event monitoring
11. CIP-015 internal network monitoring
12. Anomaly investigation and evidence retention
13. SIEM integration
14. Evidence export for an actual NERC audit request
15. Reporting showing which requirement, which asset, which event, when, and what evidence proves compliance

I'd make #14–15 a gating criterion. A beautiful OT dashboard isn't particularly useful if your compliance team still has to manually assemble spreadsheets and screenshots to demonstrate compliance.

Bottom line

If I had to pick one to evaluate first for a utility where NERC-CIP compliance monitoring is the central requirement: Nozomi Networks.

If the primary concern is sophisticated adversaries and protecting critical electric-grid OT: Dragos.

If you want the broadest OT/CPS platform, including remote access and heterogeneous connected assets: Claroty.

I'd actually put all three through the same NERC-CIP POC, because the differences become much clearer when you make them demonstrate your CIP evidence workflow rather than their marketing demo.www.ciopages.com

If you tell me roughly how many substations/sites, whether you're transmission/generation/distribution, and whether you already use Splunk, Microsoft Sentinel, QRadar, ServiceNow, etc., I can build you a detailed Nozomi vs. Dragos vs. Claroty NERC-CIP scorecard, including CIP-002 through CIP-015, deployment architecture, SIEM/GRC integration, evidence collection, and estimated TCO considerations.

For a utility operating power-generation, transmission, or other Bulk Electric System (BES) assets, I’d focus on OT-native security monitoring platforms that explicitly support NERC CIP compliance, particularly CIP-015-1 Internal Network Security Monitoring (INSM).

Three vendors worth putting on your shortlist are Dragos, Nozomi Networks, and Claroty. All offer OT/ICS visibility and security capabilities, but you should evaluate how their specific products map to your applicable NERC CIP requirements and produce evidence for audits.www.dragos.com+2

Shortlist: OT/ICS security monitoring tools

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1. Dragos Platform

OT-native monitoring and threat detection

Offers passive asset discovery, ICS-aware threat detection, vulnerability management, investigation workflows, and compliance dashboards. Dragos also offers OT Watch managed monitoring services. Its documentation explicitly maps platform capabilities to CIP-002 through CIP-015.www.dragos.com+1

Evaluate it if: You need deep OT threat visibility, utility-focused threat intelligence, and optional expert monitoring.

NERC CIP capabilities ·Request a demo

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2. Nozomi Networks Platform

Explicit CIP-015-1 compliance focus

Nozomi describes INSM capabilities for anomaly detection, reporting, evidence generation, investigation-data retention, and integrity protection. It supports deployments ranging from individual sensors to multi-tier architectures.www.nozominetworks.com+1

Evaluate it if: Your immediate priority is preparing for CIP-015-1, especially across many substations and geographically distributed sites.

CIP-015-1 solution details ·Request a demo

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3. Claroty Continuous Threat Detection (CTD) and xDome

Asset visibility and exposure management

Claroty's portfolio supports asset discovery, configuration visibility, network threat detection, and several NERC CIP workflows. Its published compliance guide maps product capabilities to individual standards. Confirm the specific coverage and evidence outputs for your intended deployment.www.dragos.com+2

Evaluate it if: You need broad visibility across mixed industrial environments, with exposure management and secure remote access as additional considerations.

NERC CIP solution guide ·Claroty website

What matters most for NERC CIP

CIP compliance is broader than simply installing a monitoring product. Your utility must establish the applicable requirements, operating procedures, and evidence for its specific BES Cyber Systems. NERC's standards listing identifies CIP-015-1 as a standard subject to future enforcement.www.nerc.com+1

One especially important consideration is CIP-015-1:

CIP-015-1 readiness

October 1, 2028

First deadline for specified high- and medium-impact BES Cyber Systems at Control Centers and backup Control Centers with external routable connectivity.

October 1, 2030

Deadline for other BES Cyber Systems with external routable connectivity covered by the standard.

Confirm applicability and implementation details against the official standard and your compliance authority.www.nerc.com+2

During vendor evaluations, require a demonstration of these capabilities:

• Passive, operationally safe monitoring of internal OT communications.
• Detection and investigation of anomalous or unauthorized activity.
• Retention of monitoring data and investigation records.
• Integrity and access controls for monitoring evidence.
• Exportable audit evidence and integration with your SIEM, where needed.
• A written mapping of capabilities to each applicable CIP requirement, identifying what remains a procedural or manual responsibility.

Let's narrow this down to your utility

I can compare the three vendors against your operating environment and compliance priorities. The most useful starting point is:

1. What does your utility operate?

Power generation

Transmission and distribution / substations

Control centers / SCADA

Multiple environments

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2. What is your main compliance priority?

CIP-015-1 internal network security monitoring

Broad NERC CIP support across multiple standards

Threat detection and incident response

Audit evidence and reporting

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3. What deployment model is acceptable?

On-premises only

Hybrid (on-premises plus cloud management)

Cloud-managed

Undecided

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4. Who will monitor the alerts?

In-house security team

Managed monitoring service

Combination of in-house and managed service

[Compare vendors for my utility]