# OT Security Platforms for Industry

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# OT Security Platforms for Industry

Operational technology (OT) systems — the PLCs, RTUs, HMIs and industrial networks that run factories, utilities and critical infrastructure — require purpose-built security. OT security is not IT security rebranded: it demands passive visibility, protocol-aware detection, safe vulnerability assessment, and expert response workflows that respect uptime and safety constraints.

This article compares five market-leading OT security platforms in 2026, explains how they differ, and helps you choose the right solution for your industrial environment. The vendors covered are Nozomi Networks, Claroty, Dragos, Tenable.ot, and Cisco Cyber Vision. You’ll get practical buying guidance, realistic pricing ranges, and a short FAQ to address common procurement questions.

Why this matters now
– Industrial environments continue to be targeted by nation-state and financially motivated attackers.
– OT environments are increasingly connected to IT and cloud systems, expanding the attack surface.
– Regulatory bodies and customers expect demonstrable OT risk management and detection capabilities.

Below are the vendors to consider and what sets each apart.

## Vendor overviews (what they do and who they fit)

### Nozomi Networks
Nozomi Networks focuses on large-scale passive monitoring and real-time visualization of industrial networks. The platform excels at asset discovery, protocol decoding (Modbus, DNP3, IEC 61850, OPC UA, and many others), anomaly detection, and integration with SOC tooling.

Key strengths:
– Best-in-class passive visibility with high-fidelity asset inventories.
– Fast anomaly detection tuned for OT behavior.
– Scales to multi-site, utility-scale deployments.
– Strong integrations with SIEMs, IT ticketing, and industrial control systems.

Realistic 2026 pricing (estimate): Typical small-site subscription deployments start at roughly $40,000–$60,000 per year; enterprise, multi-site licensing ranges $75,000–$250,000/year depending on appliances and features. Contact Nozomi for exact quotes.

Differentiator: Rapid deployment and clarity for complex, distributed environments — often chosen by utilities and manufacturers with many sites.

### Claroty
Claroty provides a platform oriented around continuous threat detection, secure remote access, and vulnerability management for OT. Claroty’s strengths include deep protocol inspection, prioritized vulnerability and risk scoring, and a secure remote access product that replaces ad hoc VPNs.

Key strengths:
– Strong risk and vulnerability prioritization tailored to industrial assets.
– Secure remote access module that reduces ad hoc VPN/credential risks.
– Tight integration between asset inventory, CTD (continuous threat detection), and remediation workflows.

Realistic 2026 pricing (estimate): Entry-level subscriptions for Claroty Continuous Threat Detection start around $35,000/year for a single site; bundled enterprise deployments with secure remote access and vulnerability management typically range $60,000–$200,000/year.

Differentiator: Focus on reducing attack surface through combined visibility, vulnerability management and secure access.

### Dragos
Dragos is known for its industrial threat detection, deep threat intelligence, and incident response (IR) services. The Dragos Platform is frequently chosen by organizations that want both a technology solution and operational threat-hunting / IR expertise.

Key strengths:
– Industrial-specific threat intelligence and adversary behavior models.
– Response-focused service offerings and IR retainers.
– Strong for organizations expecting to conduct threat hunting, tabletop exercises, or require fast IR.

Realistic 2026 pricing (estimate): Platform licensing commonly begins around $45,000–$70,000/year; packaged with managed detection or IR retainer services, total engagements often start at $100,000+/year depending on scope.

Differentiator: Deep operational threat intelligence and incident response as an integrated capability.

### Tenable.ot
Tenable.ot (from Tenable) extends Tenable’s vulnerability management approach into OT environments. It emphasizes asset discovery, vulnerability prioritization (informed by Nessus data), and collaboration between IT and OT teams.

Key strengths:
– Vulnerability assessment and prioritized risk scoring tied to known CVEs.
– Good fit for organizations already invested in Tenable products (Nessus, Tenable.io).
– Cost-effective entry point for prioritized OT vulnerability management.

Realistic 2026 pricing (estimate): Small deployments start around $20,000–$30,000/year; larger or enterprise deployments with broader scanning and integration needs typically range $40,000–$120,000/year.

Differentiator: Tight linkage to Tenable’s vulnerability ecosystem and lower-cost entry for vulnerability-first programs.

### Cisco Cyber Vision
Cisco Cyber Vision integrates industrial asset visibility with Cisco’s broader networking and security portfolio. It provides protocol-aware monitoring, asset identification, and can natively integrate with Cisco industrial switches and Talos threat intelligence.

Key strengths:
– Native integration with Cisco industrial networking hardware and NAC.
– Runs well where Cisco is already the standard for networking.
– Actionable visibility plus Cisco security stack synergies (firewalls, SIEM).

Realistic 2026 pricing (estimate): Cisco sells via partners and pricing varies heavily; typical industrial site deployments start around $15,000–$35,000/year for licensing and basic support, with broader enterprise network integrations costing more.

Differentiator: Network-native approach for organizations already standardized on Cisco infrastructure.

## Comparison table

Product	Best for	Key features	Price	Link text
Nozomi Networks	Utilities, large manufacturers	Passive asset discovery, protocol-aware anomaly detection, visualization, SIEM integration	~$40k–$250k/yr (estimate)	[View Nozomi Networks details](https://tekpulse.org/recommends/ot-security-platforms-industry-nozomi)
Claroty	Organizations needing vulnerability + secure remote access	Continuous threat detection, vulnerability prioritization, secure remote access, remediation workflows	~$35k–$200k/yr (estimate)	[Explore Claroty platform capabilities](https://tekpulse.org/recommends/ot-security-platforms-industry-claroty)
Dragos	Teams focused on IR, threat hunting, intelligence	Industrial threat intelligence, detection rules, IR services and retainers, hunting	~$45k–$100k+/yr (estimate)	[See Dragos industrial security](https://tekpulse.org/recommends/ot-security-platforms-industry-dragos)
Tenable.ot	Vulnerability-first programs, Tenable customers	Asset discovery, vulnerability scoring, Nessus integration, prioritized remediation	~$20k–$120k/yr (estimate)	[Review Tenable.ot vulnerability approach](https://tekpulse.org/recommends/ot-security-platforms-industry-tenable-ot)
Cisco Cyber Vision	Cisco-centric networks, integrated networking	Protocol inspection, asset inventory, Talos intel integration, NAC integration	~$15k–$35k+/yr (estimate)	[Check Cisco Cyber Vision details](https://tekpulse.org/recommends/ot-security-platforms-industry-cisco-cybervision)

**See latest pricing** [See latest pricing for Nozomi Networks](https://tekpulse.org/recommends/ot-security-platforms-industry-nozomi)

Note on pricing: These are realistic 2026 estimates. Vendors use site/asset/appliance tiers and sometimes one-time appliance fees plus subscription support. Always request a tailored quote and confirm included modules and professional services.

## How to choose: quick buying guide

Selecting an OT security platform is as much about matching operational constraints as feature lists. Use this checklist during procurement.

1. Define objectives and constraints
– What are your top priorities? (visibility, detection, vulnerability management, secure remote access, IR)
– Which sites are highest priority? (single process cell vs. distributed substations)
– Are there regulatory or safety constraints that limit active scanning?

2. Visibility and discovery
– Prefer passive asset discovery where uptime and safety are concerns.
– Confirm protocol coverage (Modbus, OPC UA, IEC 104/61850, DNP3, proprietary protocols).

3. Detection and analytics
– Look for behavior-based anomaly detection tuned to OT patterns.
– Ensure false positive rates are manageable and that the system supports tuning by OT engineers.

4. Vulnerability management and prioritization
– If vulnerability remediation is a priority, choose a platform that provides prioritized, contextual risk scores (Tenable.ot, Claroty).

5. Incident response and services
– If you lack internal OT IR expertise, prioritize vendors with IR services or managed detection offerings (Dragos, Nozomi).

6. Integration and operational fit
– Ask about integrations with your SIEM, ticketing systems, and industrial control system vendors.
– If your estate uses Cisco or Tenable already, favor platforms that integrate tightly to reduce friction.

7. Deployment model and total cost
– Decide between on-prem appliances, SaaS, or hybrid. Factor in professional services for baselines and tuning.
– Confirm license metrics: per asset, per site, or per appliance — and understand data retention costs.

8. Proof-of-value (PoV)
– Run a limited PoV on a low-risk segment. A 4–6 week passive proof showing inventory and anomalies is usually sufficient to validate a vendor.

9. Vendor maturity and roadmap
– Evaluate vendor support, update cadence for detection rules, and long-term roadmap for OT/IT convergence features.

10. Safety and risk tolerance
– Ensure any active scanning or blocking features are safety-reviewed and supported by OT engineering; never allow intrusive scans on live control loops without proper testing.

## Deployment considerations (operational tips)

– Start passive. Most OT teams prefer passive monitoring to avoid interfering with control traffic.
– Validate asset baselines with OT operators — they often know device behaviors that tools will flag as anomalies.
– Prioritize high-risk sites and assets for initial deployment: remote substations, production-critical lines, or third-party access points.
– Plan for staffing: OT detections often require an OT-aware analyst or a tight IT/OT playbook for escalation.
– Formalize secure remote access before onboarding vendor engineers or remote maintenance personnel.

## Use case recommendations

– Utilities with distributed substations: Nozomi or Cisco Cyber Vision (for Cisco-centric networks) for scalable visibility.
– Manufacturers with strong internal patching programs: Claroty for integrated vulnerability prioritization and secure remote access.
– Organizations lacking IR expertise: Dragos for platform plus retainers and threat hunting.
– Enterprises with mature vulnerability programs wanting a lower-cost entry: Tenable.ot paired with Nessus scans.

**Try Claroty free** [Request a Claroty trial or PoV](https://tekpulse.org/recommends/ot-security-platforms-industry-claroty)

## Frequently asked questions (FAQ)

Q: What’s the difference between OT security and IT security?
A: OT security prioritizes safety, availability, and physical process integrity. Tools emphasize passive visibility, industrial protocol awareness, and non-disruptive detection rather than aggressive active scanning or automatic endpoint isolation typical in IT.

Q: Can OT security platforms run without impacting operations?
A: Yes. Most modern OT security platforms are designed for passive deployment (sensor taps, mirrored ports) and only use active queries for limited, scheduled vulnerability scans where safe. Always validate any active testing with OT engineering.

Q: How should I budget for an OT security program?
A: Expect initial PoV costs for sensors and professional services, then annual subscription fees that scale with number of sites/assets and included modules. A minimum viable deployment for a mid-sized site often falls in the $20k–$60k/year range; enterprise programs are higher. Factor in training, integration, and potential IR retainers.

Q: Do I need both an OT detection platform and network segmentation?
A: Yes — detection platforms provide visibility and alerting; segmentation reduces the blast radius. Use both: segmentation to limit exposure, and OT security tools to detect when controls fail or attackers adapt.

Q: How long until I see value from a PoV?
A: A passive PoV often produces useful inventory and initial alerts within 2–6 weeks. Full tuning and operational maturity typically take several months as detections are investigated and baselines refined.

## Final considerations and next steps

OT security is an investment in operational resilience. The right platform will provide clarity into what’s on your industrial network, surface high-priority risks, and improve your ability to detect and respond to incidents without jeopardizing uptime.

To recap:
– Nozomi Networks: choose for broad passive visibility and large, distributed environments.
– Claroty: choose for vulnerability management plus secure remote access.
– Dragos: choose for threat intelligence and IR-led programs.
– Tenable.ot: choose for vulnerability-first, cost-effective entry and Tenable integration.
– Cisco Cyber Vision: choose if you want network-native integration with Cisco infrastructure.

Procure smart:
– Define objectives, run a short PoV, and demand tailored pricing that clearly lists included modules and professional services.
– Insist on a joint test plan with OT operations to avoid interruptions.
– Measure success by actionable inventory accuracy, reduction in blind spots, and the ability to detect real anomalies without overwhelming staff with false positives.

**Get the deal** [Compare Claroty and Nozomi pricing and request quotes](https://tekpulse.org/recommends/ot-security-platforms-industry-claroty)

If you’d like, tell me about your environment (number of sites, average assets per site, current networking stack) and I’ll recommend a prioritized shortlist and a PoV plan tailored to your risk profile.

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