C. Tools, platforms & product lists (30)
Background: why OT security needs a different playbook
OT and ICS environments are not just “another branch of IT.” They are built around uptime, physical safety, legacy controllers, proprietary protocols, tightly controlled change windows, and often air-gapped or high-latency sites. That is why modern industrial security programs increasingly lean on passive discovery, risk-based vulnerability management, behavioral threat detection, segmentation, and secure remote access instead of traditional IT-first controls.
Another clear shift in 2025–2026 is the move toward cloud-native OT security and AI-assisted analysis. Vendors are packaging richer analytics, multi-site visibility, and faster prioritization into their platforms, while also adding secure remote access and IT/OT convergence features that fit real industrial workflows.
For readers evaluating tools, the biggest question is not “Which product has the most features?” It is: can this platform see every asset, protect operations without disruption, prioritize what matters, and help teams act fast when patching is not immediately possible?
30 tools, platforms, and product lines worth knowing
1) Microsoft Defender for IoT
Microsoft Defender for IoT is positioned for OT and industrial infrastructure with real-time asset discovery, vulnerability management, and cyberthreat protection. Microsoft also highlights context-aware visibility, risk-based posture management, and behavioral analytics for ICS/OT and enterprise IoT environments.
2) Microsoft Defender for IoT in the Defender portal
Microsoft’s newer Defender portal experience extends OT visibility into the broader Defender ecosystem, giving security teams a more unified view of incidents, risks, and device context. It is especially relevant for organizations that want OT monitoring to sit closer to their wider Microsoft security stack.
3) Dragos Platform
The Dragos Platform remains one of the most recognized OT-native security platforms, combining asset visibility, vulnerability management, threat detection, and investigation support. Dragos emphasizes OT-safe discovery, “Now, Next, Never” prioritization, and response workflows that are tuned for industrial environments.
4) Dragos Asset Visibility
Dragos’s asset visibility capability is built for accurate OT inventory without operational disruption. The platform is designed to discover and classify OT, IT, IoT, and IIoT assets, while adding protocol depth that helps defenders understand what is really happening on the network.
5) Dragos Vulnerability Management
Dragos uses OT-specific context to separate the vulnerabilities that matter from the long tail that does not. Its guidance is designed for industrial realities where patching is not always immediate or even safe, which is why segmentation and other compensating controls are part of the story.
6) Dragos Threat Detection
Dragos threat detection is built around industrial behavior, adversary intelligence, and contextual alerts rather than generic IT noise. The platform ties detections to OT threat research and response guidance, which helps teams move from “alert flood” to actionable investigation.
7) Claroty xDome for Industrial Environments
Claroty xDome is a SaaS-powered industrial cybersecurity platform built for cyber-physical systems. Claroty positions it around asset discovery, exposure management, network protection, and threat detection, with a strong emphasis on scalability and business-context prioritization.
8) Claroty xDome Secure Access
Claroty xDome Secure Access is designed for frictionless, highly secure remote access to OT environments. It is a strong fit for teams that need granular, auditable access for internal staff, contractors, and third parties without relying on broad VPN-style entry.
9) Nozomi Vantage
Nozomi Vantage centralizes OT and IoT security management in the cloud and is built to support scale across multi-site environments. It focuses on asset risk scoring, threat intelligence cards, and AI-driven analytics to simplify large industrial operations.
10) Nozomi Vantage IQ
Nozomi Vantage IQ is the company’s private AI assistant for OT/IoT teams. The goal is straightforward: speed up analysis, improve decision-making, and help defenders turn raw OT security data into board-ready context and practical guidance.
11) Cisco Cyber Vision
Cisco Cyber Vision stands out because security is embedded into the industrial network itself. Cisco positions it around OT visibility, adaptive segmentation, and secure remote access, with integration into Cisco networking and security products for larger industrial environments.
12) Cisco Secure Equipment Access
Cisco Secure Equipment Access is the remote-access layer tied to Cyber Vision’s OT workflows. It is designed for least-privilege access, auditability, and safer contractor or engineer connectivity into industrial assets.
13) Tenable OT Security
Tenable OT Security is aimed at converged OT/IT environments where security teams need one view of assets, exposures, and control points. Tenable highlights automated discovery, threat and anomaly detection, risk-based vulnerability prioritization, and configuration change tracking.
14) Tenable One
Tenable One is Tenable’s broader exposure management platform, and OT is part of that bigger picture. For large organizations, that matters because OT risk rarely exists in isolation; it sits alongside identity, cloud, and IT exposure.
15) Forescout 4D Platform
Forescout’s 4D Platform is built around discover, assess, control, and govern. The company positions it as a continuous visibility and policy platform for IT, OT, IoT, and IoMT, which is useful where asset sprawl and unmanaged devices are constant challenges.
16) Forescout eyeInspect
eyeInspect is Forescout’s industrial cybersecurity product for CPS environments. It emphasizes broad protocol coverage, multiple discovery methods, and real-time asset intelligence, making it relevant for organizations that need deep visibility at scale.
17) Forescout eyeSight
eyeSight focuses on device visibility across the extended enterprise, with passive profiling and agentless discovery at its core. That makes it useful where uptime is sacred and installing agents on sensitive systems is either impossible or undesirable.
18) Forescout eyeFocus
eyeFocus is built to help teams quantify and prioritize cybersecurity risk and compliance. It adds persistent asset intelligence and a risk-based view of exposure, which is important when executives want a clearer answer than “we have a lot of devices.”
19) Armis Centrix
Armis Centrix is Armis’s cyber exposure management platform, and it covers IT, OT, IoT, and IoMT across complex environments. Armis stresses continuous discovery, risk scoring, vulnerability detection, and remediation workflows built to reduce exposure at scale.
20) Armis Centrix for OT/IoT Security
Armis also offers a dedicated OT/IoT security line that focuses on industrial visibility and security without disruption. The platform is positioned for both cloud and on-premises use cases, which matters for air-gapped or heavily regulated environments.
21) Armis VIPR
VIPR, short for Vulnerability Prioritization and Remediation, is one of Armis’s modular solutions. It is designed to help teams reduce the time from discovery to remediation by linking risk context, workflows, and prioritization into the broader Centrix ecosystem.
22) Armis Secure Remote Access
Armis Secure Remote Access is built to replace risky remote-entry patterns with more controlled access. Armis emphasizes policy-driven approvals, session recording, audit trails, and tighter access to OT zones and assets.
23) Fortinet OT Security Platform
Fortinet’s OT Security Platform has expanded in recent years beyond visibility into deeper threat visibility, ruggedized segmentation, and automated response capabilities. Fortinet ties the platform to the broader Security Fabric, which is useful for organizations trying to unify IT and OT security operations.
24) FortiGuard OT Security Service
FortiGuard’s OT Security Service adds OT-focused IPS, application control signatures, and virtual patching for industrial environments. That makes it especially relevant when patch windows are tight and network-level protection becomes the next best control.
25) FortiSwitch Rugged 424F
Fortinet’s rugged industrial switching portfolio includes the FortiSwitch Rugged 424F, designed for utility and harsh OT environments. The value here is not just connectivity; it is security-aware networking that supports the OT segmentation story.
26) FortiExtender Vehicle 211F
FortiExtender Vehicle 211F shows how OT security is expanding into mobile and field environments. For operations that depend on remote assets, fleet connectivity, or distributed industrial locations, that kind of ruggedized edge support matters.
27) Siemens SINEC Security Guard
Siemens SINEC Security Guard is built to help industrial operators track OT threats and vulnerabilities while keeping the environment manageable for teams that may not have deep cybersecurity specialization. Siemens positions it as part of a broader industrial cybersecurity approach aligned with IEC 62443.
28) Siemens Industrial Next Generation Firewall
Siemens Industrial Next Generation Firewall is a perimeter protection option for industrial automation networks. Its focus is clear: support secure IT/OT segmentation and provide deep inspection for industrial traffic where classic IT firewalls are often not enough.
29) TXOne Stellar
TXOne Stellar is purpose-built endpoint protection for OT, supporting legacy Windows systems as well as modern versions. TXOne’s messaging is centered on low-footprint protection, automatic recognition of OT applications, and preventing unauthorized changes without interrupting production.
30) TXOne Portable Inspector
TXOne Portable Inspector is a USB-based, agentless scanning and asset-discovery tool for endpoints that cannot take a traditional security install. It is especially useful in air-gapped or isolated environments because it can scan, inspect, and verify systems without software installation or system modification.
What stands out across the market
The strongest OT security platforms in 2026 are no longer just “visibility tools.” They are moving toward complete workflows that combine discovery, exposure management, segmentation, remote access, response, and executive reporting in one operational model. That is the real direction of the market across Microsoft, Dragos, Claroty, Cisco, Tenable, Forescout, Armis, Fortinet, Siemens, Nozomi, and TXOne.
For industrial defenders, the practical takeaway is simple: pick tools that fit the plant, not tools that force the plant to behave like an office network. In OT, safety and uptime are the starting point, and security only works when it respects both.