The Best IoT Security Software in 2026
We researched IoT security software using vendors’ official websites, including pricing pages, plan tables, and product documentation. Rankings focus on the category’s core job, value for money, and verified features for discovering connected devices and detecting, segmenting, and responding to threats. Compare platforms for enterprise IoT and industrial environments.
Our top picks
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Top ranked
Microsoft Defender for IoT#1 of 569.3/10Agentless OT monitoring and threat response for organizations using Microsoft security tools.
Pricing on request
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Runner-up
Tenable One OT Exposure#2 of 569.2/10OT asset discovery, threat detection, and vulnerability management with flexible deployment options.
Pricing on request
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#3 ranked
CrowdStrike Falcon for XIoT#3 of 569.1/10A cloud-based OT security offering for unified asset visibility, risk prioritization and threat protection.
Pricing on request · 15-day trial
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 56 tools, best first · page 1 of 2
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Best forOrganizations standardizing OT security on Microsoft
Agentless OT monitoring and threat response for organizations using Microsoft security tools.
- Incident response
- Industrial OT coverage
- Threat detection
9.3/10★★★★★Visit Microsoft -
Best forTeams prioritizing OT exposure and vulnerability risk
OT asset discovery, threat detection, and vulnerability management with flexible deployment options.
- IoT asset discovery
9.2/10★★★★★Visit Tenable -
Best forMid-market and enterprise IT/OT teams
A cloud-based OT security offering for unified asset visibility, risk prioritization and threat protection.
- Device segmentation
- Incident response
- Industrial OT coverage
Pricing on request · 15-day trial Our CrowdStrike Falcon for XIoT verdict → Contact CrowdStrikeFor vendors Sponsor this spot · #3 · $79/mo →9.1/10★★★★★Contact CrowdStrike -
Best forOn-premises teams needing broad industrial protocol coverage
Broad industrial protocol monitoring and endpoint protection for on-premises OT environments.
- IoT asset discovery
9.0/10★★★★☆Contact Kaspersky -
Best forMid-market and enterprise OT security teams
Passive OT monitoring pairs asset visibility with threat-informed detection and response workflows.
- IoT asset discovery
8.9/10★★★★☆Visit Dragos -
Best forMid-market and enterprise OT/IoT security teams
Broad OT/IoT monitoring and integrations, sold through quote-based pricing.
- IoT asset discovery
8.8/10★★★★☆Visit site -
Best forIoT teams needing device controls and runtime protection
Combines IoT discovery, zero-trust controls, network defenses, and supported-device runtime protection.
- Device segmentation
- Industrial OT coverage
- Threat detection
8.7/10★★★★☆Contact Check Point -
Best forOrganizations using Fortinet for OT protection
A Fortinet portfolio for OT visibility, segmentation, threat detection, and response.
- Device segmentation
- Incident response
- Industrial OT coverage
8.6/10★★★★☆Contact Fortinet -
Best forCloud-first teams managing OT and CPS exposure
Passive OT monitoring, asset discovery, exposure management, and threat detection in a cloud platform.
- IoT asset discovery
8.5/10★★★★☆Visit Claroty -
Best forTeams needing device segmentation and response workflows
Agentless device visibility paired with segmentation policies and incident response.
- Device segmentation
- Incident response
- Industrial OT coverage
8.4/10★★★★☆Visit Ordr -
Best forHoneywell sites seeking agentless OT monitoring
A self-hosted OT security tool for asset discovery, threat detection and vulnerability tracking.
- IoT asset discovery
8.3/10★★★★☆Contact Honeywell -
Best forMid-market and enterprise OT security teams
Self-hosted OT monitoring combines asset discovery, network zoning, and threat alerts.
- Device segmentation
- Incident response
- Industrial OT coverage
8.1/10★★★★☆Visit Claroty -
Best forAWS IoT Core users focused on device security audits
A focused AWS IoT security audit service, with Detect unavailable to new customers.
- Device segmentation
- Incident response
- Threat detection
7.9/10★★★★☆Visit AWS IoT -
Best forEnterprise teams inventorying industrial assets
A focused industrial asset inventory tool, not a full threat-detection suite.
- Incident response
- Industrial OT coverage
- IoT asset discovery
7.9/10★★★★☆Contact ABB -
Best forEnterprise OT teams focused on change and compliance
OT security coverage spanning asset inventory, change monitoring, threat detection and compliance.
- Incident response
- Industrial OT coverage
- Threat detection
7.9/10★★★★☆Visit site -
Best forOT teams needing broad protocol analysis and response
Broad OT monitoring and response, with pricing handled through sales.
- Device segmentation
- Incident response
- Industrial OT coverage
7.9/10★★★★☆Request a demo -
Best forEnterprise teams pairing IoT security with networking
IoT and OT discovery, risk controls, and network security within Versa’s platform.
- Device segmentation
- Incident response
- Industrial OT coverage
7.9/10★★★★☆Visit Versa Networks -
Best forCloud teams prioritizing IoT segmentation and access
IoT/OT discovery, segmentation, and governed remote access for cloud-focused teams.
- Device segmentation
- Incident response
- Industrial OT coverage
7.8/10★★★★☆Contact Zscaler -
Best forOn-premises teams needing OT discovery and alerting
On-premises OT discovery, network visibility, threat monitoring, and ICS risk assessment.
- Device segmentation
- Industrial OT coverage
- Threat detection
7.7/10★★★★☆Contact OPSWAT -
Best forIndustrial teams needing OT threat response
OT security platform combining asset discovery, threat detection and incident response.
- Incident response
- Industrial OT coverage
- Threat detection
7.6/10★★★★☆Visit site -
Best forTeams managing IoT, OT, and medical devices together
A device-security platform combining asset discovery, risk prioritization, and segmentation workflows.
- Device segmentation
- Incident response
- Industrial OT coverage
7.5/10★★★★☆Visit Asimily -
Best forHealthcare and enterprise teams needing device context
Agentless IoT discovery, risk context, and segmentation for healthcare and enterprise teams.
- Device segmentation
- Incident response
- Industrial OT coverage
7.4/10★★★★☆Visit Cylera -
Best forAir-gapped sites seeking passive OT detection
A passive OT security platform with asset discovery, protocol inspection and air-gapped sensor support.
- IoT asset discovery
7.3/10★★★★☆Contact OTDefend -
Best forOT teams seeking attack-path analysis and containment
A broad industrial security toolkit centered on passive discovery and attack-path analysis.
- Device segmentation
- Incident response
- Industrial OT coverage
7.2/10★★★★☆Visit AetherGuard -
Best forBudget-conscious teams assessing IoT and OT exposure
Maps IoT and OT exposure and supports validation and network enforcement.
- Device segmentation
- Incident response
- Industrial OT coverage
7.1/10★★★★☆Visit IoT Secure -
Best forTeams needing device identity and network microsegmentation
Device discovery, identity, risk scoring, and segmentation for mid-market and enterprise teams.
- Device segmentation
- Incident response
- Industrial OT coverage
6.9/10★★★☆☆Visit Netskope -
Best forTeams managing mixed IT, IoT, OT, and cloud assets
Broad asset visibility and risk analysis for teams managing mixed environments.
6.7/10★★★☆☆Visit Armis -
Best forEnterprises managing unmanaged connected devices
Cloud-delivered device discovery, firewall controls, and segmentation for enterprise IoT/OT.
- Device segmentation
- Industrial OT coverage
- Threat detection
6.6/10★★★☆☆Visit Cato Networks -
Best forManufacturers securing Azure Sphere device fleets
A security-focused OS and update service for Azure Sphere certified microcontrollers.
6.4/10★★★☆☆Visit Microsoft -
Best forTeams managing device credentials and firmware
Device discovery and lifecycle controls for IoT and OT security teams.
- Incident response
- Industrial OT coverage
- Threat detection
6.3/10★★★☆☆Request a demo -
Best forEnterprise teams automating IoT and OT device upkeep
An agentless platform for discovering, securing, and maintaining enterprise OT and IoT devices.
- Incident response
- Industrial OT coverage
- Threat detection
6.2/10★★★☆☆Visit Viakoo -
Best forTeams investigating threats across OT networks
Valkyrie pairs industrial protocol inspection with packet capture and OT threat investigation.
- Incident response
- Industrial OT coverage
- Threat detection
6.1/10★★★☆☆Visit Insane Cyber -
Best forTeams prioritizing OT visibility and compliance reporting
OT-focused visibility, risk prioritization, and ISA/IEC 62443 reporting in a cloud platform.
- Device segmentation
- Incident response
- Industrial OT coverage
6.0/10★★★☆☆Visit Omny -
Best forSites focused on wireless IoT and OT threat detection
Wireless IoT and OT threat visibility, location mapping, and response integrations.
- Incident response
- Industrial OT coverage
- Threat detection
5.9/10★★★☆☆Request a demo -
Best forOT teams needing asset and vulnerability visibility
A centralized console for OT asset visibility, vulnerability detection, and policy management.
- IoT asset discovery
5.8/10★★★☆☆Visit TXOne Networks -
Best forTeams wanting broad, low-cost asset discovery
Broad IT, OT, IoT, and cloud discovery, with paid capacity set by contract.
5.7/10★★★☆☆Visit runZero -
Best forIndustrial operators needing an on-premises IoT gateway
Connect OT equipment to enterprise and cloud systems with protocol-aware gateway controls.
- Incident response
- Industrial OT coverage
- Threat detection
5.6/10★★★☆☆Contact Kaspersky -
Best forEnterprises extending network detection to IoT devices
A broad network security platform that can extend detection to IoT devices.
5.5/10★★★☆☆Visit ExtraHop -
Best forOT teams monitoring industrial networks on premises
On-premises OT monitoring for teams that need protocol inspection and anomaly detection.
- Incident response
- Industrial OT coverage
- Threat detection
5.4/10★★★☆☆Contact NAONWORKS -
Best forTeams managing device identity and credentials
Device identity controls for connected products, infrastructure, and edge environments.
- Device segmentation
- Incident response
- Industrial OT coverage
5.3/10★★★☆☆Visit site -
Best forOT teams seeking passive monitoring and SOC triage
Passive OT monitoring with asset, vulnerability and SOC triage context.
- Incident response
- Industrial OT coverage
- Threat detection
5.2/10★★★☆☆Book a demo -
Best forOT teams planning risk-based mitigation investments
Digital-twin simulations and risk-based mitigation planning for industrial OT teams.
- Industrial OT coverage
- Threat detection
- IoT asset discovery
5.1/10★★★☆☆Contact Radiflow -
Best forOT teams focused on passive threat detection
Passive industrial monitoring pairs asset discovery with layered threat detection.
- Industrial OT coverage
- Threat detection
- IoT asset discovery
5.0/10★★☆☆☆Request a demo -
Best forSmaller OT teams needing passive asset visibility
Passive OT monitoring pairs asset discovery and topology maps with contextual threat alerts.
- Industrial OT coverage
- Threat detection
- IoT asset discovery
4.9/10★★☆☆☆Visit Tabor Security -
Best forOT teams seeking priced, hybrid security tooling
Broad OT security coverage with cloud or self-hosted deployment, starting at $980/month.
- Device segmentation
- Incident response
- Industrial OT coverage
4.8/10★★☆☆☆Visit CyberDragon.ai -
Best forTeams needing free IoT/OT risk visibility
A cloud service for assessing device risk, with a limited free tier and paid bulk analysis.
- Industrial OT coverage
- Threat detection
- IoT asset discovery
4.7/10★★☆☆☆Visit DeviceTotal -
Best forIoT device makers needing embedded runtime protection
Embedded device protection combines runtime integrity checks, fleet telemetry, and threat detection.
- Incident response
- Threat detection
- IoT asset discovery
4.5/10★★☆☆☆Visit Sternum -
Best forTeams focused on external attack-surface exposure
A cloud exposure-management platform for external assets, not dedicated IoT device protection.
4.4/10★★☆☆☆Contact CyCognito -
Best forManufacturers securing connected devices and OT
Lifecycle security for manufacturers, with device protection and OT monitoring in one platform.
- Incident response
- Industrial OT coverage
- Threat detection
4.3/10★★☆☆☆Visit Zerynth -
Best forSmall businesses needing endpoint protection alongside IoT
Broad endpoint protection for small businesses, though not a dedicated IoT security tool.
4.2/10★★☆☆☆Visit Microsoft
No tools match those filters.
Compare at a glance
Head-to-head All 22 comparisons →
- Microsoft Defender for IoT vs Tenable One OT Exposure
- Microsoft Defender for IoT vs CrowdStrike Falcon for XIoT
- Microsoft Defender for IoT vs Kaspersky Industrial CyberSecurity Platform
- Microsoft Defender for IoT vs Dragos Platform
- Microsoft Defender for IoT vs Nozomi Networks Platform
- Microsoft Defender for IoT vs Check Point IoT Protect
- Microsoft Defender for IoT vs Fortinet OT Security Platform
- Tenable One OT Exposure vs CrowdStrike Falcon for XIoT
- Tenable One OT Exposure vs Check Point IoT Protect
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How we rank IoT security software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update