Tenable vs. other OT security vendors

Fortify your OT security posture

Don’t let fragmented security solutions from multiple vendors weaken your cyber defenses. Tenable’s integrated approach to exposure management combines comprehensive visibility with industry-leading vulnerability management capabilities to help break down silos and simplify security across IT, OT and IoT for a complete picture of risk.

Why Tenable

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Simulate Success

Why customers choose Tenable over other OT security vendors

Coverage

Coverage and accuracy

Tenable leads in CVE coverage, zero-day research and vulnerability management. Our solutions are powered by extensive vulnerability coverage and intelligence, with regular updates and rapid response to high-profile issues.

Explore Tenable vulnerability coverage and zero-day research at tenable.com/plugins.

#1 in CVE coverage

#1 in zero-day research 1

#1 in vulnerability management

120K K

Vulnerabilities assessed with 328,000+ plugins

783

Vulnerabilities disclosed by Tenable Research

< 24 hrs

Median time for coverage of high profile issues

Visibility

Unmatched OT/IT/IoT visibility

Tenable’s patented hybrid discovery combines active and passive scanning to deliver full visibility of your attack surface and proactively close risk exposure.

  • Active querying: Get in-depth vulnerability insights and reduce false positives by safely querying OT systems using native protocols to check for misconfigurations, outdated firmware and more.

  • Passive monitoring: Continuously analyze network traffic with passive monitoring capabilities for real-time updates on new devices, applications and vulnerabilities.

This unique combination helps uncover hidden assets and vulnerabilities that passive monitoring often misses, including IoT devices using application-based scanning capabilities to discover asset details and communication paths.

Other OT vendors rely on SNMP-based crawlers and supported query protocols (one-size-fits-all approach) and lack extensive interlocks and overrides to safely query OT devices.

“Tenable’s track record in high-risk environments was a big factor, especially active query. Everyone else can do passive, but we weren’t looking at passive, because otherwise, we could continue with the solution we had in place.”

North American railroad company

Exposure

Exposure management from identity to on-prem to OT

The Tenable One Exposure Management Platform provides unified visibility across cloud, identities, on-prem and OT/IoT systems in a single solution. It offers granular vulnerability intelligence, tracks vulnerability history and enables risk remediation tracking with a risk-based approach.

An extensive library of dashboards and reports help facilitate communication with stakeholders such as senior leaders, IT and security teams, auditors, insurance providers and board members.

“When it comes to operational technology …that's where Tenable wins.”

Vulnerability management architect, German manufacturing company

Many vendors focus on OT security alone and lack an integrated exposure management platform for comprehensive visibility into risk across your attack surface, leaving your organization with disparate tools and without a single source of truth.

Siloed OT point solutions do not consider enterprise-wide context, such as asset criticality on your network, internal and peer benchmarking, assessment or remediation maturity.

Many OT vendors lack integrated support for Active Directory and Entra ID, which limits identity and access control.

Vulnerability

Vulnerability analytics

Tenable solutions consider 150+ factors to provide accurate risk assessments and actionable insights into cyber risk for converged OT/IT environments. Tenable Research, combined with more than 50 trillion data points, fuels our Vulnerability Intelligence. This powerful combination gives you the context you need around business urgency and risk, helping teams clearly identify risks and prioritize remediation efforts.

Many vendors lack advanced, time-tested vulnerability priority ratings (VPR), resulting in inaccurate and missing results. They can’t match the extensive research capabilities Tenable has developed over decades.

Lack of configurable dashboards and less advanced reporting capabilities.

$ 153 M

invested in research and development.

150 +

factors to determine a vulnerability’s risk level and identify those with the highest chance of exploitation.

VPR

extended prioritization capabilities from cloud to traditional on-premises assets.

Scalable

Scalable licensing and deployment model

With Tenable's asset-based licensing model, only pay for what you need—no surprises, just clarity and control. Our licensing model scales with your operations, making it easy to manage your security investments as your business grows. Whether you’re adding new plant sites, expanding production lines or opening new data centers, Tenable One OT Exposure ensures your cybersecurity investments align with your evolving needs.

And, because no two organizations are the same, Tenable offers flexible deployment options — on-prem or virtual — ensuring your OT security fits seamlessly into your existing infrastructure.

Complex procurement processes make budgeting and scaling difficult.

“The way Tenable licenses [its solutions] is better compared to Nozomi. . . Nozomi was also more confusing and Tenable was clear, so that was a differentiator.”

North American energy company

Compare Tenable to other OT security vendors

Tenable
Other OT security vendors
Tenable
Integrated: Replaces siloed tools with a single platform for streamlined security operations.
Unified platform
Other OT security vendors
Siloed: Point products lead to complexity, increased costs and limited data sharing.
Tenable
Hybrid: Patented approach combines passive scanning and Active Query for complete, safe and reliable asset discovery.
Scanning technologies
Other OT security vendors
Narrow: Primarily passive-only or rely heavily on agents with limited active query results.
Tenable
Industry-leading: 340K+ CVEs, extensive protocol support and mature Active Query capabilities ensure accurate and comprehensive vulnerability intelligence across endpoints, network devices, OT, identities, cloud, web apps, containers and more.
Accuracy and coverage
Other OT security vendors
Incomplete: Less mature discovery tools are limited to endpoints and basic SNMP-based capabilities, resulting in incomplete data and more false positives.
Tenable
Context-aware: Combines VPR with asset criticality and considers attack vectors for accurate risk prioritization.
Prioritization
Other OT security vendors
Limited: Doesn’t adequately consider broader business context, leading to inaccurate and incomplete risk assessments.
Tenable
Granular: Provides visibility into changes on specific device components, such as ladder logic segments and tag tables, allowing security teams to identify the root cause of anomalies and recover from incidents.
Configuration change tracking
Other OT security vendors
Challenging: Limited tools for tracking configuration changes make it difficult to pinpoint the exact cause of anomalies, leading to longer investigation times, increased downtime and risk exposure.
Tenable
Responsive: Evaluate and track compliance with emerging standards and frameworks, including IEC62443, ISO27001, NIS2 and more. Perform password and end-of-life audits for OT devices across your network.
Compliance and audit
Other OT security vendors
Lacking: Minimal or non-existent compliance tracking capabilities and dashboards.
Tenable
Advanced: Highlights critical attack paths from IT to OT with AI-powered insight and remediation guidance.
Attack path analysis
Other OT security vendors
Minimal: Unable to identify and analyze attack paths where attackers can traverse from IT to OT environments.
Tenable
World-class: Fueled by Tenable Research, 50 trillion data points, and a 100+ person research team.
Vulnerability research and intelligence
Other OT security vendors
Limited: Primarily malware-focused, lacking in-depth vulnerability context.
Tenable
Mature: More than 125 partners worldwide with 300+ unique integrations.
Technology partner ecosystem
Other OT security vendors
Developing: Many newer, smaller companies with limited partner ecosystems narrowly focused on OT.
Tenable
Multi-modal deployment via SaaS, on-prem, or agent-based.
Operational flexibility and time-to-value
Other OT security vendors
Primarily SaaS-only, often perceived as “heavy-lifts” requiring dedicated hardware sensors or complex configurations.
Tenable
Comprehensive: 24/7 global support, professional services and customer onboarding.
Support and logistics
Other OT security vendors
Novice: Fewer resources and smaller company sizes may limit support capabilities.
Tenable
Start with foundational OT visibility [link] (embedded directly inside our core VM solutions); scale to full OT Security as your maturity grows.
Entry point
Other OT security vendors
Typically require a full platform purchase and hard-to-deploy proprietary hardware/sensors on day one.
Q4 2025 Analyst Report

Tenable is a Leader in the 2025 Gartner® Magic Quadrant™ for Exposure Assessment Platforms

Q3 2025 Analyst Report

Tenable named a leader in the IDC MarketScape Worldwide Exposure Management 2025 Vendor Assessment

Q3 2025 Analyst Report

Tenable named a leader in The Forrester Wave™: Unified Vulnerability Management Solutions, Q3 2025

Related resources

Check out all resources
Analyst Research
Tenable named a Challenger in the 2026 Gartner® Magic Quadrant™ for CPS Protection Platforms

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