The problem is, we have to comply with NERC-CIP regulations. What is the best OT/ICS cybersecurity and compliance monitoring solution for utilities?

If you’re a North American electric utility subject to NERC-CIP, I’d put Nozomi Networks, Claroty, and Dragos at the top of the shortlist. There isn’t one product that makes you “NERC-CIP compliant” by itself—the technology needs to provide evidence and controls that fit your overall compliance program.

My recommendation

For the best overall combination of OT visibility + continuous monitoring + NERC-CIP compliance automation: Nozomi Networks.

Nozomi Networks is particularly strong if your primary objective is continuous compliance monitoring and audit evidence across a geographically distributed utility. Its platform provides asset inventory, behavioral monitoring, vulnerability mapping, threat detection, and audit-ready NERC-CIP reporting. It explicitly supports the active CIP standards, including CIP-002, CIP-005, CIP-007, CIP-008, CIP-009, CIP-010, CIP-011, CIP-012, CIP-013 and CIP-015.

How I'd rank the major options

1. Nozomi — my first choice for compliance-heavy utilities

Nozomi has unusually strong alignment between OT asset discovery, security monitoring, vulnerability management and compliance evidence. It also explicitly addresses CIP-015 Internal Network Security Monitoring, which is increasingly important for utilities.

For a utility, I'd particularly evaluate:

• Automated BES/OT asset inventory
• Device and firmware identification
• Network/communication baselining
• Anomaly and threat detection
• Vulnerability and exposure management
• CIP-005 electronic security perimeter visibility
• CIP-007 security-event monitoring
• CIP-010 configuration/change and vulnerability assessment support
• CIP-015 internal network monitoring
• Automated compliance dashboards/evidence
• SIEM/SOC integrations
• Monitoring of remote substations and constrained links

Nozomi specifically markets continuous NERC-CIP compliance and automated “proof of compliance,” rather than simply providing generic OT monitoring.

2. Claroty — probably the strongest competitor

Claroty would be my #2 and could easily become #1 depending on your architecture.

Claroty has particularly broad CPS capabilities: asset discovery, vulnerability/exposure management, network monitoring, segmentation, secure remote access and compliance reporting. Its NERC-CIP mapping covers requirements including CIP-005, CIP-007, CIP-008, CIP-010, CIP-012 and CIP-013.

Its xDome SaaS platform and CTD on-premises platform give you deployment flexibility, which matters for environments where some BES networks cannot reasonably send operational telemetry to the cloud.

I'd lean toward Claroty over Nozomi if your bigger problem is:

“We need to understand and reduce our entire cyber-physical attack surface, control third-party access, segment environments, and manage vulnerabilities.” I'd lean toward Nozomi if the dominant requirement is:

“We need continuous OT monitoring and a defensible, automated NERC-CIP compliance/evidence program.”

3. Dragos — strongest security/ICS threat specialist

Dragos is the one I'd put in front of the security team if their question is:

“How do we detect an actual ICS attacker before they disrupt the grid?” Dragos has exceptionally deep ICS/OT specialization and threat intelligence. Its platform uses passive monitoring and deep packet inspection, with 600+ industrial and IT protocol parsers, and specifically supports CIP-015 through internal traffic monitoring, detection and evidence retention.

Dragos also offers managed OT threat hunting through OT Watch, which can be attractive if your SOC doesn't have substantial OT expertise.

The tradeoff is that I would view Dragos primarily as an OT security/threat-detection platform that supports your NERC-CIP program, whereas Nozomi/Claroty can be particularly compelling when compliance workflow and asset/exposure management are central requirements.

One important caveat: don't buy a “NERC-CIP compliance product”

I'd structure the procurement around controls and evidence, not marketing claims.

For example:

CIP-002 → Do we have an authoritative inventory and categorization of BES Cyber Systems?

CIP-005 → Can we continuously demonstrate ESP boundaries and communications?

CIP-007 → Can we monitor security events, ports/services, malicious activity and relevant system changes?

CIP-010 → Can we establish configuration baselines, identify changes and support vulnerability assessments?

CIP-013 → Can we connect technical asset/vulnerability information to supply-chain risk processes?

CIP-015 → Can we continuously monitor internal network traffic, detect anomalous activity, retain the necessary evidence and demonstrate that monitoring is actually operating?

That last point is especially important. CIP-015 is fundamentally about internal network security monitoring (INSM), not merely having an asset inventory. Dragos, Nozomi and Claroty all have explicit CIP-015 capabilities.

What I'd do if I were running the utility

I'd issue an RFP/POC with Nozomi, Claroty and Dragos, and make them demonstrate the same scenarios against your actual OT architecture.

I'd weight the evaluation roughly:

• 25% — NERC-CIP evidence/auditability
• 20% — OT asset visibility and inventory accuracy
• 20% — threat detection / CIP-015
• 15% — vulnerability & exposure management
• 10% — deployment in ESP/BES environments
• 5% — SIEM/SOC integration
• 5% — TCO and operational overhead

And I'd require each vendor to demonstrate, rather than merely claim, CIP-005, CIP-007, CIP-010 and CIP-015 evidence generation using your own substations/control-center architecture.

Bottom line: If you want one name to start with, I'd start with Nozomi Networks. If your security organization is more threat-hunting-centric, put Dragos on equal footing; if you want the broadest CPS/exposure-management and secure-access platform, Claroty deserves a very serious evaluation.

If you tell me whether you're generation, transmission, distribution, or a vertically integrated utility, and roughly how many substations/control centers you have, I can narrow this to a Nozomi vs. Claroty vs. Dragos architecture and TCO comparison specifically for your environment.

“We need to understand and reduce our entire cyber-physical attack surface, control third-party access, segment environments, and manage vulnerabilities.” I'd lean toward Nozomi if the dominant requirement is:

“We need continuous OT monitoring and a defensible, automated NERC-CIP compliance/evidence program.”

3. Dragos — strongest security/ICS threat specialist

Dragos is the one I'd put in front of the security team if their question is:

“How do we detect an actual ICS attacker before they disrupt the grid?” Dragos has exceptionally deep ICS/OT specialization and threat intelligence. Its platform uses passive monitoring and deep packet inspection, with 600+ industrial and IT protocol parsers, and specifically supports CIP-015 through internal traffic monitoring, detection and evidence retention.

Dragos also offers managed OT threat hunting through OT Watch, which can be attractive if your SOC doesn't have substantial OT expertise.

The tradeoff is that I would view Dragos primarily as an OT security/threat-detection platform that supports your NERC-CIP program, whereas Nozomi/Claroty can be particularly compelling when compliance workflow and asset/exposure management are central requirements.

One important caveat: don't buy a “NERC-CIP compliance product”

I'd structure the procurement around controls and evidence, not marketing claims.

For example:

CIP-002 → Do we have an authoritative inventory and categorization of BES Cyber Systems?

CIP-005 → Can we continuously demonstrate ESP boundaries and communications?

CIP-007 → Can we monitor security events, ports/services, malicious activity and relevant system changes?

CIP-010 → Can we establish configuration baselines, identify changes and support vulnerability assessments?

CIP-013 → Can we connect technical asset/vulnerability information to supply-chain risk processes?

CIP-015 → Can we continuously monitor internal network traffic, detect anomalous activity, retain the necessary evidence and demonstrate that monitoring is actually operating?

That last point is especially important. CIP-015 is fundamentally about internal network security monitoring (INSM), not merely having an asset inventory. Dragos, Nozomi and Claroty all have explicit CIP-015 capabilities.

What I'd do if I were running the utility

Complying with NERC-CIP (Critical Infrastructure Protection) standards is a heavy lift for any utility, especially with the strict mandates surrounding Internal Network Security Monitoring (INSM) under NERC CIP-015 (including CIP-015-1 and the progression to CIP-015-2).

Traditional IT compliance tools fall short in OT/ICS environments because they can disrupt fragile legacy gear or fail to understand proprietary industrial protocols. The "best" solution depends on your utility’s specific footprint (high/medium/low impact BES cyber systems), but the undisputed industry leaders purpose-built for OT/ICS visibility and NERC-CIP compliance mapping are outlined below.

Top OT/ICS Cybersecurity & NERC-CIP Compliance Solutions

• Nozomi Networks
  • Best for: Broad protocol support and automated continuous network mapping.
  • NERC-CIP Alignment: The Nozomi Networks NERC CIP Compliance Guide maps directly to standards CIP-002 through CIP-009, as well as the newer INSM requirements in CIP-015. It provides deep packet inspection (DPI) to identify anomalies, unauthorized assets, and lateral movement within electronic security perimeters (ESPs).
• Dragos Platform
  • Best for: Threat intelligence, incident response, and rigorous industrial-focused forensics.
  • NERC-CIP Alignment: Dragos offers tailored asset visibility, vulnerability management, and audit-ready reporting mapped from CIP-002 to CIP-015. Review their breakdown on Dragos NERC CIP Compliance for specialized tooling designed to meet the strict logging and internal monitoring expectations enforced by recent FERC orders.
• Claroty (xDome / Continuous Threat Detection - CTD)
  • Best for: Flexible hybrid/air-gapped deployments and secure remote access governance.
  • NERC-CIP Alignment: Claroty excels at automated asset discovery and continuous exposure management. Its integrated Secure Access module helps lock down and log vendor remote access—a common pain point during NERC audits under CIP-005. You can evaluate architecture choices via the TakePoint Research Claroty Vendor Profile.
• Tenable OT Security
  • Best for: Bridging IT-OT visibility gaps and tracking vulnerability baselines.
  • NERC-CIP Alignment: Tenable provides continuous asset mapping, configuration tracking, and an audit trail of all ICS control commands required for compliance. Explore their approach via the Tenable Guide to NERC CIP Compliance , which also highlights handling low-impact BES cyber system updates.

How to Choose the Right One for Your Utility

To help narrow down which platform fits your environment best, could you share:

• Your utility's BES impact levels (High, Medium, or Low impact systems)
• Whether you prefer an on-premises vs. cloud-hybrid architecture

Yes. If you are a NERC-CIP-regulated electric utility, I would not choose a product solely because it says “NERC CIP compliant.” NERC CIP is a collection of requirements, and the current standards span asset categorization, electronic security perimeters, system security, incident response, configuration/change management, information protection, supply-chain risk, and—importantly—the newer internal network security monitoring requirements.

My shortlist

A recent 2026 industry comparison similarly puts Dragos, Claroty and Nozomi among the leading OT-native choices, while distinguishing them from broader XIoT and IT-security platforms.

If I had to pick one

I'd start with Dragos for a serious NERC-CIP electric utility.

Dragos is particularly strong where you need passive OT monitoring, ICS protocol awareness, asset inventory, vulnerability intelligence, threat detection, incident response, and NERC-CIP evidence. Its current NERC-CIP material specifically maps capabilities across CIP-002 through CIP-015, including CIP-010 configuration/vulnerability management and CIP-015 internal network security monitoring.

Its network monitoring is also specifically designed around passive, OT-safe collection rather than conventional IT vulnerability scanning, with deep inspection of industrial protocols.

That matters because “don't break the grid while monitoring the grid” is one of the fundamental differences between OT and IT security.

But there's an important catch

I would not expect one OT platform to be your entire NERC-CIP compliance system.

Think of the architecture as:

OT security platform → asset/configuration/network evidence → SIEM/SOC → GRC/compliance system → auditor

The OT platform should continuously answer questions such as:

• What BES Cyber Systems and associated assets are actually present?
• What is communicating with what?
• Are communications crossing an Electronic Security Perimeter unexpectedly?
• Did a device's configuration change?
• Did a new device appear?
• Are there unauthorized remote connections?
• What vulnerabilities exist on OT assets?
• Which vulnerabilities actually matter operationally?
• Are there anomalous east-west communications?
• What evidence can we retain for an audit?

Then your GRC/compliance layer handles the requirement → control → evidence → exception → remediation → audit trail workflow.

That's especially important as NERC continues developing the CIP standards. The official NERC standards page currently lists CIP-015-1 and CIP-015-2, Internal Network Security Monitoring, alongside the existing mandatory standards.

Dragos vs. Claroty vs. Nozomi

1. Dragos — my first choice for a utility

I'd put it first if you're primarily concerned with protecting the BES, rather than simply building an OT asset inventory.

Strengths:

• Very strong electric-utility/ICS specialization
• Excellent OT threat detection
• Deep ICS protocol visibility
• OT-specific vulnerability intelligence
• Strong threat intelligence
• Incident response expertise
• Passive monitoring
• CIP-010 support
• CIP-015 monitoring capabilities
• Strong integration with a security operations program

Dragos explicitly describes its CIP-015 approach as continuous passive monitoring inside trusted zones, baseline analysis, and detection of anomalous east-west traffic.

Best scenario: transmission operator, generation company, large utility, or organization where sophisticated ICS threats are a major concern.

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2. Claroty — potentially the better choice for enterprise-wide OT

I'd put Claroty very close to Dragos.

Claroty is particularly compelling if your environment includes not just traditional grid OT but a large amount of IT/OT convergence, remote access, IoT/CPS, building systems, medical/industrial devices, etc.

Its utility offering emphasizes asset visibility, risk/exposure management and NERC-CIP support, with both on-premises and cloud-based options.

Best scenario: large utility wanting one platform to provide broad CPS/OT visibility and exposure management across many types of operational environments.

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3. Nozomi Networks — excellent for distributed utilities

Nozomi is especially attractive if you have hundreds of geographically dispersed substations/sites and need consistent monitoring across them.

It is an OT-native platform with strong asset discovery, network monitoring and anomaly detection. Nozomi also currently positions itself as a leader in the 2026 Gartner CPS Protection Platforms market.

Best scenario: highly distributed OT environment where deployment scalability and asset visibility are dominant requirements.

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What I'd actually buy

For a substantial NERC-CIP utility, I'd evaluate a two-layer architecture:

Option A — my preferred architecture

Dragos + dedicated GRC/compliance platform + existing SIEM/SOC Dragos provides the OT security telemetry and evidence; your GRC platform manages NERC controls, evidence, remediation and audit workflows.

Option B

Claroty + ServiceNow/other GRC + SIEM Particularly attractive if your enterprise is already standardized on ServiceNow and wants IT and OT risk management consolidated.

Option C

Nozomi + GRC + SIEM Very compelling for highly distributed, multi-vendor OT environments.

The key is not to let a vendor's “NERC-CIP compliance” checkbox substitute for an actual control/evidence architecture.

The requirements I'd put into the RFP

I would make these mandatory demonstrations, rather than accepting PowerPoint claims:

1. CIP-002: automatically discover/classify BES Cyber System-related assets and maintain an authoritative inventory.
2. CIP-005: continuously map communications and identify unexpected pathways across ESPs.
3. CIP-007: monitor security-relevant events and detect anomalous/malicious behavior.
4. CIP-010: detect configuration changes and support vulnerability assessment without dangerous active scanning.
5. CIP-015: demonstrate internal/east-west network monitoring, including trusted-zone traffic.
6. Evidence: show exactly how an auditor retrieves historical evidence for a specific requirement.
7. Retention: demonstrate configurable retention and tamper-resistant audit logging.
8. Asset reconciliation: prove that the platform can reconcile discovered OT assets against the official BES asset inventory.
9. Remote access: identify and record vendor/engineering remote sessions.
10. Substation scalability: demonstrate the architecture with multiple geographically distributed substations—not just a lab.
11. OT safety: demonstrate passive monitoring and explain precisely what active collection does and does not touch.
12. Integration: SIEM, CMDB, ticketing, identity, firewall, vulnerability management and GRC integrations.
13. Disconnected environments: demonstrate how evidence gets collected from sites with restricted connectivity.
14. Audit workflow: start with a NERC requirement and work backward to actual packets/events/assets/configuration changes that constitute evidence.

That last demonstration is particularly revealing.

My ranking

For a NERC-CIP electric utility, I'd start the procurement process with:

1. Dragos — best overall OT/ICS security 2. Claroty — best broad OT/CPS visibility and exposure management 3. Nozomi Networks — excellent distributed OT monitoring 4. Industrial Defender — investigate specifically for compliance/evidence automation 5. Armis — particularly compelling if IT/OT asset intelligence is the strategic priority

And I would not make the mistake of choosing the “best NERC-CIP compliance product” and assuming you've solved OT security. NERC compliance and OT security overlap heavily, but they are not the same problem.

If you tell me (1) generation vs. transmission vs. distribution, (2) approximate number of substations/plants, (3) whether you already use Splunk/Sentinel/ServiceNow, and (4) whether you're preparing for an upcoming NERC audit, I can narrow this to a specific recommended architecture and a vendor-by-vendor NERC-CIP requirements matrix.

3. Nozomi Networks — excellent for distributed utilities

Nozomi is especially attractive if you have hundreds of geographically dispersed substations/sites and need consistent monitoring across them.

It is an OT-native platform with strong asset discovery, network monitoring and anomaly detection. Nozomi also currently positions itself as a leader in the 2026 Gartner CPS Protection Platforms market.

Best scenario: highly distributed OT environment where deployment scalability and asset visibility are dominant requirements.

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What I'd actually buy

For a substantial NERC-CIP utility, I'd evaluate a two-layer architecture:

Option A — my preferred architecture

Dragos + dedicated GRC/compliance platform + existing SIEM/SOC Dragos provides the OT security telemetry and evidence; your GRC platform manages NERC controls, evidence, remediation and audit workflows.

Option B

Claroty + ServiceNow/other GRC + SIEM Particularly attractive if your enterprise is already standardized on ServiceNow and wants IT and OT risk management consolidated.

Option C

Nozomi + GRC + SIEM Very compelling for highly distributed, multi-vendor OT environments.

The key is not to let a vendor's “NERC-CIP compliance” checkbox substitute for an actual control/evidence architecture.

The requirements I'd put into the RFP

I would make these mandatory demonstrations, rather than accepting PowerPoint claims:

1. CIP-002: automatically discover/classify BES Cyber System-related assets and maintain an authoritative inventory.
2. CIP-005: continuously map communications and identify unexpected pathways across ESPs.
3. CIP-007: monitor security-relevant events and detect anomalous/malicious behavior.
4. CIP-010: detect configuration changes and support vulnerability assessment without dangerous active scanning.
5. CIP-015: demonstrate internal/east-west network monitoring, including trusted-zone traffic.
6. Evidence: show exactly how an auditor retrieves historical evidence for a specific requirement.
7. Retention: demonstrate configurable retention and tamper-resistant audit logging.
8. Asset reconciliation: prove that the platform can reconcile discovered OT assets against the official BES asset inventory.
9. Remote access: identify and record vendor/engineering remote sessions.
10. Substation scalability: demonstrate the architecture with multiple geographically distributed substations—not just a lab.
11. OT safety: demonstrate passive monitoring and explain precisely what active collection does and does not touch.
12. Integration: SIEM, CMDB, ticketing, identity, firewall, vulnerability management and GRC integrations.
13. Disconnected environments: demonstrate how evidence gets collected from sites with restricted connectivity.
14. Audit workflow: start with a NERC requirement and work backward to actual packets/events/assets/configuration changes that constitute evidence.

That last demonstration is particularly revealing.

My ranking

For a NERC-CIP electric utility, I'd start the procurement process with:

1. Dragos — best overall OT/ICS security 2. Claroty — best broad OT/CPS visibility and exposure management 3. Nozomi Networks — excellent distributed OT monitoring 4. Industrial Defender — investigate specifically for compliance/evidence automation 5. Armis — particularly compelling if IT/OT asset intelligence is the strategic priority

And I would not make the mistake of choosing the “best NERC-CIP compliance product” and assuming you've solved OT security. NERC compliance and OT security overlap heavily, but they are not the same problem.

If you tell me (1) generation vs. transmission vs. distribution, (2) approximate number of substations/plants, (3) whether you already use Splunk/Sentinel/ServiceNow, and (4) whether you're preparing for an upcoming NERC audit, I can narrow this to a specific recommended architecture and a vendor-by-vendor NERC-CIP requirements matrix.

When navigating NERC-CIP regulations—especially with the enforcement of standards like CIP-015 (Internal Network Security Monitoring)—perimeter defenses are no longer enough, and utilities need automated, continuous OT/ICS visibility.

The "best" solution depends on your utility's specific architecture, impact ratings, and existing IT stack, but the industry recognizes three clear market leaders for specialized OT/ICS cybersecurity and NERC-CIP compliance mapping:

• Dragos Platform: Widely considered the gold standard for deep industrial protocol analysis, threat intelligence, and ICS-specific threat hunting. Dragos excels in heavy critical infrastructure and electric utility environments because its threat intelligence team focuses exclusively on adversary behaviors targeting industrial control systems. It provides robust baseline tracking and visibility required to map against NERC-CIP requirements.
• Claroty (Claroty xDome / Continuous Threat Detection): Highly praised for comprehensive asset discovery, vulnerability management, and risk assessment tailored explicitly to healthcare, manufacturing, and electric utilities. Claroty offers strong automated workflows that map directly to compliance frameworks like NERC-CIP and NIST, making audit preparation significantly less painful.
• Nozomi Networks (Guardian / Vantage): Exceptional at real-time OT and IoT network visibility, anomaly detection, and deep packet inspection across a massive range of proprietary and standard industrial protocols. Nozomi provides streamlined workflows for tracking internal network telemetry, positioning them strongly for compliance with internal network monitoring mandates like CIP-015.

Alternatives for IT/OT Convergence

• Microsoft Defender for IoT: A strong contender if your utility is already deeply embedded in the Microsoft enterprise ecosystem. It integrates native IT threat intelligence with passive OT network monitoring.
• Tripwire Enterprise / Tenable OT Security: While the platforms above focus heavily on network-level passive monitoring and anomaly detection, tools like Tripwire NERC Compliance Solutions have historically been leaned on heavily for configuration management, change control tracking, and hard audit trail generation required by NERC-CIP.

To help narrow down which platform fits your environment best, could you share:

• What is the scale/impact rating of your Bulk Electric System (BES) cyber systems (High, Medium, Low)?
• Are you looking for a solution focused strictly on passive network monitoring/anomaly detection or broader configuration and change management audit trails?
• Do you have an existing preference for your IT/security vendor ecosystem (e.g., Microsoft, Tenable)?

For electric utilities juggling reliability and the heavy hand of NERC-CIP compliance (including the critical shift toward internal network security monitoring under NERC CIP-015-1 ), there is no single "magic bullet" vendor. Instead, the industry consensus points to a two-layered approach: combining an OT-native continuous visibility/threat detection platform with a specialized compliance/configuration management tool.

The leading platforms utilized by major power and utility providers are organized below by their primary strengths:

1. The Compliance & Configuration Heavyweights (Audit-Ready Evidence)

If your primary pain point is passing audits, generating Reliable Subject Matter Expert (SME) Audit Worksheets (RSAWs), and tracking configuration baselines (CIP-010, CIP-007), these solutions lead the utility space:

• Industrial Defender : Long considered a utility sector staple specifically built for NERC CIP compliance. It excels at host-level configuration management, change intelligence, and automated evidence collection across multi-decade utility lifecycles without disrupting legacy substation assets.
• Tripwire Enterprise for NERC CIP : A heavily deployed suite focused on file integrity monitoring, change tracking, and policy compliance mapping across both IT and OT layers.

2. The OT Network Visibility & Anomaly Detection Leaders (INSM & Threat Hunting)

To satisfy deep packet inspection (DPI) and the internal network visibility demands of modern mandates like CIP-015 , passive monitoring platforms are essential:

• Nozomi Networks : Highly scalable for sprawling, distributed substation and transmission grids. It provides robust asset discovery, behavioral baselining via AI/ML, and pre-built NERC CIP reporting dashboards that drastically reduce audit preparation workloads.
• Claroty : Offers massive platform breadth for Cyber Physical Systems (CPS), combining passive monitoring with active querying and vulnerability mapping tailored explicitly to IEC 62443 and NERC CIP frameworks.
• Dragos : Recognized as a gold standard for ICS/OT threat intelligence and incident response. While less focused on native automated compliance checkboxes, its threat group tracking and protocol analysis for the energy sector provide unmatched operational defense.

3. Privileged Access & Vendor Governance (CIP-003, CIP-005)

• ConsoleWorks : Widely implemented in critical infrastructure to handle interactive remote access governance, credential management, and automated audit trails for third-party OEM/vendor access—turning compliance evidence into an automated byproduct of daily operations.

To help narrow down the ideal stack for your organization, let me know:

• What are your impact ratings (Low, Medium, or High impact BES Cyber Systems)?
• Are you looking for a pure compliance evidence tool or a threat detection / INSM solution to meet CIP-015?

If NERC-CIP compliance is the primary requirement, I would not choose a product simply because it is a strong OT IDS. You want a platform that can turn OT telemetry into audit evidence, asset inventory, vulnerability/configuration records, monitoring records, and incident evidence.

My shortlist

The current NERC standards landscape is particularly relevant here: CIP-005, CIP-007, CIP-010, CIP-012, CIP-013 and the forthcoming CIP-015 Internal Network Security Monitoring requirements all create different evidence and monitoring needs. NERC currently lists CIP-015-1 as subject to future enforcement, while CIP-010-4 is already mandatory.

🥇 My first choice: Dragos

For a serious electric utility with BES Cyber Systems and meaningful nation-state/ICS threat exposure, I'd put Dragos at the top of the evaluation.

Dragos is unusually strong because it combines:

• Passive OT/ICS network monitoring
• Detailed asset inventory
• ICS-specific threat detection
• Vulnerability/exposure management
• ICS threat intelligence
• Incident investigation and response
• Managed OT monitoring through OT Watch
• Specific NERC-CIP support, including CIP-002 through CIP-015

Dragos explicitly maps its platform and services to NERC-CIP requirements, including CIP-015 internal network security monitoring, and provides services around sensor placement, threat hunting and compliance maturity.

The important distinction: Dragos is strongest if your question is "How do we detect and respond to an adversary attacking our electric OT?" rather than merely "How do we produce compliance reports?"

🥈 Nozomi Networks — potentially the best overall compliance platform

I'd put Nozomi Networks extremely close to Dragos, and potentially #1 if your primary pain is NERC-CIP compliance across a large, geographically distributed environment.

Nozomi specifically advertises:

• Automated asset inventory
• Behavioral baselining
• Vulnerability mapping
• Threat/anomaly detection
• Risk scoring
• Forensic data capture
• Automated remediation workflows
• Audit-ready NERC-CIP evidence
• Custom NERC-CIP queries
• SIEM/OT integrations

For a utility with hundreds of substations and geographically dispersed OT, I'd seriously consider Nozomi as the leading candidate.

🥉 Claroty — best for broad asset/exposure management

Claroty is particularly attractive if your environment isn't just classic SCADA.

For example, if you're dealing with:

• substations
• SCADA
• PLCs/RTUs
• engineering workstations
• IoT
• building systems
• medical/other XIoT
• remote access
• IT/OT convergence

Claroty's broader cyber-physical/XIoT approach can be advantageous. It offers passive OT visibility plus exposure/vulnerability management and multiple deployment models.

Where Microsoft fits

If you're already heavily invested in Microsoft Sentinel, Defender and Azure, Microsoft Defender for IoT deserves a serious evaluation.

Microsoft supports passive OT monitoring, including hybrid/air-gapped deployments, and explicitly positions Defender for IoT for energy/utilities and NERC-CIP environments.

The tradeoff is that I'd generally favor Dragos/Nozomi/Claroty when OT security is the core mission, and Microsoft when integrating OT into an existing Microsoft SOC is the dominant consideration.

What I'd actually recommend

If I were running the procurement, I'd make the shortlist:

1. Dragos — threat detection + critical-infrastructure expertise 2. Nozomi Networks — compliance automation + distributed utility visibility 3. Claroty — broad CPS/XIoT exposure management 4. Microsoft Defender for IoT — if you're a Microsoft/Sentinel shop 5. Tenable OT Security — particularly if Tenable already owns your vulnerability-management program

A 2026 industry comparison similarly places Claroty, Nozomi and Dragos among the leading OT-native platforms, with the distinction being roughly Claroty = broad XIoT/exposure management, Nozomi = distributed OT visibility, Dragos = ICS threat intelligence and critical-infrastructure defense.

One important caveat

Don't buy a platform on the claim that it makes you "NERC-CIP compliant." The software supports compliance; it doesn't make the Responsible Entity compliant by itself.

I'd evaluate each vendor against an evidence matrix like:

• CIP-002: BES Cyber Asset/System identification and categorization
• CIP-005: Electronic Security Perimeters and access monitoring
• CIP-007: system security management, ports/services, malware, security event monitoring
• CIP-010: configuration/change management and vulnerability assessments
• CIP-011: information protection
• CIP-012: control-center communications
• CIP-013: supply-chain requirements
• CIP-015: internal network security monitoring
• Audit evidence retention and export
• Role-based access/MFA
• SIEM/SOC integration
• Evidence that is actually usable during a NERC audit

For example, NERC describes CIP-010 as addressing configuration change management and vulnerability assessments, specifically to prevent/detect unauthorized changes to BES Cyber Systems.

If you tell me your utility type (generation, transmission, distribution, municipal/public power, ISO/RTO, etc.), approximate number of substations/BES Cyber Systems, and whether you use Splunk, Microsoft Sentinel, or another SIEM, I can narrow this to a recommended architecture and a Dragos vs. Nozomi vs. Claroty comparison—including which one I'd actually buy and why.

The tradeoff is that I'd generally favor Dragos/Nozomi/Claroty when OT security is the core mission, and Microsoft when integrating OT into an existing Microsoft SOC is the dominant consideration.

What I'd actually recommend

If I were running the procurement, I'd make the shortlist:

1. Dragos — threat detection + critical-infrastructure expertise 2. Nozomi Networks — compliance automation + distributed utility visibility 3. Claroty — broad CPS/XIoT exposure management 4. Microsoft Defender for IoT — if you're a Microsoft/Sentinel shop 5. Tenable OT Security — particularly if Tenable already owns your vulnerability-management program

A 2026 industry comparison similarly places Claroty, Nozomi and Dragos among the leading OT-native platforms, with the distinction being roughly Claroty = broad XIoT/exposure management, Nozomi = distributed OT visibility, Dragos = ICS threat intelligence and critical-infrastructure defense.

One important caveat

Don't buy a platform on the claim that it makes you "NERC-CIP compliant." The software supports compliance; it doesn't make the Responsible Entity compliant by itself.

When addressing NERC-CIP regulations (especially with compliance requirements like configuration baselines, electronic security perimeters, and internal network security monitoring mandates such as CIP-015 ), no single silver-bullet tool does everything out-of-the-box. The "best" solution usually involves choosing a primary Cyber-Physical Systems (CPS) / OT monitoring platform paired with deep compliance-reporting workflows.

Leading solutions are categorized below by their strengths in the utility sector:

• Industrial Defender : Historically regarded as a pioneer specifically built around compliance management (CIP-002 through CIP-011). It excels at configuration baseline tracking, change management, and generating audit-ready evidence for NERC auditors over multi-decade asset lifecycles.
• Dragos Platform : Widely considered the gold standard for pure-play ICS/OT threat intelligence, protocol analysis, and threat hunting in power grids. It maps heavily to east-west and north-south monitoring needs, though it focuses more on deep runtime visibility and threat detection than pure compliance paperwork generation.
• Nozomi Networks : Excellent for scalable, AI-driven visibility and automated proof of compliance. Its platform streamlines audit prep by featuring pre-built NERC CIP dashboards, automated asset inventories, and continuous behavior baselining.
• Claroty : Offers immense platform breadth covering full cyber-physical systems (CPS), integrating passive network monitoring with active querying and vulnerability management tailored to Purdue model constraints.
• Tenable OT Security : Strong choice if your priority is vulnerability prioritization and exposure management that respects delicate legacy OT equipment limitations without causing disruptions.

If you share your utility's impact level (Low, Medium, or High) under CIP-002 and whether you need a tool heavier on audit evidence generation or real-time anomaly detection , I can narrow down the ideal vendor mix for your architecture.

Yes. If NERC-CIP compliance is a primary requirement, I would not choose a generic IT vulnerability scanner or SIEM as the core platform. You want an OT-native visibility + threat detection + compliance evidence platform that can operate safely in BES/ICS networks.

My shortlist

1. My first choice: Nozomi Networks

For the specific question "What solution gives us the strongest combination of OT/ICS security and NERC-CIP compliance monitoring?", I'd put Nozomi Networks at the top.

Nozomi specifically maps its platform to the NERC-CIP requirements, including asset inventory, vulnerability management, behavioral monitoring, threat detection and audit-ready compliance evidence. It also supports the newer CIP-015-1 Internal Network Security Monitoring (INSM) requirements.

That last point is particularly important. CIP-015-1 was approved by FERC in June 2025 and introduces internal network monitoring rather than relying solely on perimeter defenses.

Nozomi's compliance-oriented capabilities include:

• Passive OT/ICS asset discovery and inventory
• Vulnerability and risk identification
• Network behavioral baselining
• Anomaly/threat detection
• Investigation and forensic information
• NERC-CIP dashboards and reporting
• Audit evidence generation
• Support for CIP-015-1 INSM
• Deployment architectures suitable for ESP/BES environments

That makes it particularly attractive if your security team and compliance team need to use the same source of truth.

2. Claroty is probably the strongest alternative

Claroty would be my other top choice.

Claroty has a particularly broad platform: CTD for on-prem OT monitoring, xDome for cloud-based CPS security, and xDome Secure Access for controlled remote/vendor access. Its NERC-CIP documentation maps capabilities across CIP-005, CIP-007, CIP-008, CIP-009, CIP-010, CIP-012 and CIP-013, among others.

I'd lean Claroty over Nozomi if your bigger problem is:

"We need one strategic platform for OT asset inventory, exposure management, threat detection, remote access and broader cyber-physical security."

I'd lean Nozomi if the priority is:

"We need continuous OT monitoring and a clean path to producing NERC-CIP compliance evidence."

3. Dragos is the security-operations heavyweight

Dragos is extremely compelling if you have a mature SOC and your biggest concern is detecting and responding to sophisticated attacks against generation/transmission/distribution environments.

Dragos supports NERC-CIP from asset visibility and vulnerability management through threat detection, investigation and response, and specifically describes support for CIP-015 through continuous passive monitoring inside trusted zones.

Its differentiator is less "compliance dashboard" and more deep ICS threat intelligence + detection + OT incident response.

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One important NERC-CIP point

Don't interpret "NERC-CIP compliant" as meaning that buying one product makes you compliant.

NERC's current CIP standards cover a much broader program: BES Cyber System categorization, security management, personnel, electronic security perimeters, system security management, incident response, recovery, configuration/vulnerability management, information protection, communications, supply-chain risk and physical security.

And CIP-015-1 is especially relevant to the platform decision because it requires Internal Network Security Monitoring. NERC's technical rationale describes INSM as monitoring traffic inside a trusted zone, such as an ESP, to detect malicious or anomalous activity.

So I'd architect the solution around continuous evidence generation, rather than buying a "compliance product."

What I'd build for a utility

OT sensors → OT security platform → SIEM/SOC → NERC-CIP evidence repository

with the OT platform providing:

1. Complete BES/OT asset inventory
2. Passive network monitoring
3. Asset classification/tagging
4. ESP/EACMS/PACS visibility
5. Network baseline and anomaly detection
6. Vulnerability/exposure management
7. Configuration/change monitoring
8. Remote-access monitoring
9. CIP-015 internal network monitoring
10. Long-term evidence retention
11. Audit-ready reports
12. Integration with your SIEM/SOC, IAM, ticketing and vulnerability-management systems

I'd also insist that the vendor demonstrate the product inside your actual ESP architecture, rather than accepting a PowerPoint mapping of controls.

My recommendation

If I were running the evaluation, I'd run a three-vendor POC with Nozomi, Claroty and Dragos.

I'd weight the evaluation approximately:

• 25% — NERC-CIP evidence/compliance
• 25% — OT/ICS visibility and asset inventory
• 20% — threat detection / CIP-015 INSM
• 10% — vulnerability & exposure management
• 10% — deployment/ESP architecture
• 5% — SIEM/SOC integration
• 5% — usability and total cost

That weighting would probably lead me toward Nozomi for a compliance-first utility, Claroty for a broad enterprise OT/CPS program, or Dragos for a security-operations/threat-detection-first program.

If you tell me whether you're generation, transmission, distribution, or a vertically integrated utility, roughly how many substations/sites you have, and what you already run for SIEM/SOC (e.g. Microsoft Sentinel, Splunk, QRadar), I can narrow this down to a specific architecture and give you a Nozomi vs. Claroty vs. Dragos comparison mapped directly to CIP-002 through CIP-015.

For electric utilities navigating NERC-CIP regulations (especially with the enforcement of standards like CIP-002 through CIP-014 and the operational mandates for Internal Network Security Monitoring under CIP-015), there is no single "magic bullet" vendor. Instead, the "best" choice depends on whether your priority is deep threat intelligence/incident response, comprehensive asset discovery/continuous monitoring , or pure audit-trail and configuration compliance.

Leading solutions are categorized below by their primary strengths in the utility sector:

• Industrial Defender — Best for Pure NERC-CIP Compliance & Configuration Baseline Management. Long established in the North American power utility space, it specializes heavily in automated evidence collection, baseline configuration monitoring (CIP-007, CIP-010), and change management tracking. It is built explicitly for the compliance documentation workflows utilities dread.
• Dragos Platform — Best for ICS/OT Threat Intelligence & Defense-in-Depth. Founded by former military/ICS practitioners, Dragos is widely considered the gold standard for power grids and critical infrastructure. It provides deep packet inspection (DPI) tailored to proprietary utility protocols (e.g., DNP3, IEC 61850) and maps directly to the MITRE ATT&CK for ICS framework, moving you from paper compliance to actual threat readiness.
• Claroty (Continuous Threat Detection) — Best for Broad Cyber-Physical Asset Visibility. Claroty excels at comprehensive asset discovery across massive, multi-site environments. It combines passive monitoring with safe active queries and project file analysis to map out complex Purdue Model hierarchies with minimal operational disruption.
• Nozomi Networks (Guardian & Vantage) — Best for Scalable, Real-Time Network Monitoring. Highly regarded for its intuitive UI and rapid deployment, Nozomi offers AI-powered anomaly detection across distributed substation and generation assets, tying deep network visibility directly into compliance tracking.
• Tripwire Enterprise for NERC CIP — Best for File Integrity Monitoring (FIM) & Hardening. While less of an active OT protocol analyzer and more of an established integrity/change management suite, Tripwire is deeply entrenched in utility control rooms for satisfying rigid configuration control audits.

To help narrow down which platform fits your environment, could you share:

• What is your current asset mix (legacy serial/RTUs vs. modern IP-based substations)?
• Are you looking primarily to automate audit evidence collection or to build a 24/7 OT Security Operations Center (SOC)?

Yes. If NERC-CIP compliance is a primary requirement, I would not choose a generic IT vulnerability/compliance platform. You want an OT-native platform that can continuously inventory BES assets, monitor OT traffic, detect anomalies, manage vulnerabilities/configuration exposure, and produce defensible audit evidence.

My shortlist

1. My overall pick: Claroty

For a utility that wants one strategic OT cybersecurity platform spanning NERC-CIP compliance, asset inventory, vulnerability/exposure management, network monitoring, remote access, and audit preparation, Claroty would be my first evaluation.

Its platform covers both on-premises CTD and cloud-based xDome, with xDome Secure Access for controlled internal/vendor OT access. Claroty specifically maps capabilities to CIP-005, CIP-006, CIP-007, CIP-010, CIP-012 and CIP-013, among others.

A particularly important capability is that it isn't treating compliance as a static checklist. It can continuously discover OT assets, identify communications and configurations, detect deviations, and turn that information into compliance evidence.

2. Very close second: Nozomi Networks

I'd put Nozomi extremely high on the list if your primary problem is continuous OT/ICS visibility across a large number of substations, generation facilities and geographically dispersed sites.

Nozomi specifically emphasizes automated asset inventory, behavioral baselining, vulnerability mapping, threat/anomaly detection, risk scoring and audit-ready NERC-CIP evidence.

That's particularly relevant as NERC's CIP requirements increasingly emphasize monitoring rather than merely documenting controls.

3. Dragos if security operations are the priority

Dragos is the one I'd look at particularly hard if your question is:

"Can we actually detect and investigate an adversary inside our substations/control systems?"

rather than simply:

"Can we demonstrate compliance?"

Dragos combines OT asset/network visibility with OT-specific threat intelligence, vulnerability management, detection, investigation and response. It also offers OT Watch managed threat hunting.

Its recent NERC-CIP material specifically connects operational monitoring to compliance evidence and discusses CIP-007, CIP-010 and other requirements.

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The important issue: CIP-015

This is one reason I'd be especially careful about selecting a platform in 2026.

NERC's current standards page lists CIP-015-1 — Internal Network Security Monitoring — as "Subject to Future Enforcement," while CIP-015-2 is filed/pending regulatory approval.

The approved CIP-015-1 requires processes for monitoring network activity, detecting anomalous activity, and evaluating that activity. The evidence can include network-feed documentation, detection events, monitoring configuration, communication baselines and response/escalation documentation.

And NERC is already working on the next revision. The current proposed CIP-015-2 expands the monitoring scope to include associated EACMS, PACS and Protected Cyber Assets, among other changes.

That changes my buying criteria considerably.

I would not buy a platform merely because its sales team gives you a "NERC CIP mapping." I'd require a demonstration showing how it actually produces evidence for:

• CIP-002 — BES Cyber System categorization
• CIP-005 — ESP/EACMS monitoring and electronic access
• CIP-007 — system security/event monitoring
• CIP-008 — incident detection/response evidence
• CIP-010 — configuration/change and vulnerability assessment
• CIP-013 — supply-chain risk
• CIP-015 — internal network security monitoring
• and, importantly, the forthcoming CIP-015 revisions

NERC's own standards page distinguishes currently mandatory standards from standards subject to future enforcement, so your compliance roadmap should account for both.

What I'd actually buy

For a medium/large electric utility, my evaluation would look like:

Primary OT platform: Claroty or Nozomi
↓
OT threat intelligence / advanced detection: Dragos, if the security operation warrants it
↓
SIEM/SOC: your existing enterprise platform (Splunk, Microsoft Sentinel, QRadar, etc.)
↓
GRC: your existing compliance/GRC system
↓
NERC-CIP evidence: automated feeds from OT platform + SIEM + GRC

In other words, I wouldn't expect one product to "make you NERC-CIP compliant." NERC-CIP compliance is an organizational control/evidence program, and the technology supplies evidence and enforcement capabilities.

My ranking

If I had to select three vendors to put through an RFP tomorrow:

1. 🥇 Claroty — best overall combination of OT security + exposure management + remote access + compliance
2. 🥈 Nozomi Networks — outstanding OT visibility, monitoring and compliance automation, particularly attractive for distributed utilities
3. 🥉 Dragos — strongest choice when sophisticated OT threat detection, threat intelligence and hunting are the dominant requirements

For a utility with hundreds of substations, I would probably put Claroty and Nozomi head-to-head, with Dragos evaluated as either the primary security platform or a complementary threat-detection capability.

If you tell me whether you're a generation, transmission, distribution, municipal/public power, or vertically integrated utility, and roughly how many substations/control centers you have, I can give you a much more specific Claroty vs. Nozomi vs. Dragos comparison, including which CIP requirements each handles best and what I would put in the RFP scoring matrix.