The Best Manufacturing Cybersecurity Companies in 2026

Updated November 2026

Quick answer: The best manufacturing cybersecurity companies in 2026 include Asimily, Claroty, Nozomi Networks, Dragos, Armis, Forescout, TXOne Networks, Fortinet, and Palo Alto Networks. Asimily fits manufacturers that need to see the devices behind each PLC, rank exposures by exploitability, and simulate segmentation before enforcing it. Claroty and Nozomi Networks fit OT-led programs, Dragos fits teams that want OT incident response, and TXOne fits legacy endpoint protection.

A manufacturing security team must protect legacy equipment it did not buy and cannot patch on its own schedule, without causing operational downtime. PLCs, motion controllers, safety systems, robots, and building automation share networks with corporate IT, and the plant manager holds an effective veto over any change that could stop a line.

The right partner for that environment finds every device, including those behind controllers (serially connected or not), identifies which exposures are exploitable in your plant, and reduces the risk of an unplanned outage.

This guide covers the criteria that separate manufacturing-ready platforms from general security tools, a side-by-side view of the companies that appear most often in manufacturing evaluations, and where each one fits. Asimily publishes this guide. We include ourselves, and we describe every company based on its public positioning and how it approaches the problem from our research and conversations with market participants.

The Best Manufacturing Cybersecurity Companies at a Glance

Asimily appears first as the publisher; the order of the other companies is not a ranking.

Company	Primary Approach	Best Fit For
Asimily	Agentless visibility, ATT&CK-based exploitability analysis to separate risk from severity, and Segmentation Orchestration with Policy Simulation across IoT, IIoT, OT, and IT	Manufacturers that need to move from a unified asset inventory to enforced segmentation without disrupting production
Claroty	Cyber-physical systems protection: asset management, exposure management, network protection, secure access, and threat detection	Large industrial enterprises standardizing OT security across many sites that need secure remote access
Nozomi Networks	OT and IoT visibility, continuous monitoring, and threat and anomaly detection	Operations-led programs that value close ties to industrial automation vendors
Dragos	OT threat detection, industrial threat intelligence, and incident response services	ICS-heavy operators that prioritize threat intelligence and OT incident response via playbooks
Armis	Agentless asset intelligence and exposure management across IT, OT, IoT, and cloud	Enterprises standardized on ServiceNow workflows; cost-sensitive
Forescout	Device discovery, classification, and network access control across IT, OT, and IoT	Teams that want visibility and network access control from one vendor, not using their switch hardware vendor’s preferred platform
TXOne Networks	OT endpoint protection, industrial network defense, and portable inspection	Plants protecting legacy endpoints and scanning during maintenance windows
Fortinet	Firewalls and secure networking with OT protocol support	Manufacturers consolidating network and security on one vendor
Palo Alto Networks	Next-generation firewalls, OT security services, and XDR across IT and OT	Enterprises extending an existing Palo Alto deployment to the plant

What to Look for in a Manufacturing Cybersecurity Company

Manufacturing environments break assumptions that most security tools are built on: devices can’t take agents, maintenance windows are scheduled weeks out, and a blocked connection can stop a line. Use these six criteria to test whether a platform was built for the plant floor.

Visibility That Reaches Past the PLC

Many tools stop at the controller, which leaves the devices behind it invisible. Ask each vendor to show discovery of the child devices behind each controller, such as I/O modules, drives, and field instruments in the cell/area zone (Purdue Levels 0 to 2), in your own environment, captured agentlessly and safely against live production. Sometimes this takes clever analysis of network traffic, other times deep understanding of the vendor’s device and active, safe scanning. The inventory should also cover the IoT and IT assets that share the plant network, because those assets bridge the corporate network and the plant floor.

Prioritization by Exploitability Likelihood and Production Impact

A CVSS base score rates a vulnerability in general, without accounting for how the affected device is deployed in your plant. Look for analysis that determines whether a vulnerability is actually exploitable on a specific device in your topology, plus the ability to weight safety and downtime the way the plant values them. The output should be a short list of decisions, each with a documented reason for its ranking.

Enforcement You Can Prove Before You Deploy

Many manufacturers already own a NAC, such as Cisco ISE, or segmentation-capable firewalls, yet segmentation projects stall because no one can predict what a new policy will block. Look for a platform that generates policy in your NAC’s or firewall’s native format and previews its impact against real, observed traffic before anything is applied. It should then keep that policy current as devices are added, moved, or patched. That preview is what earns approval from the people responsible for uptime and delivers confidence.

Mitigation for Equipment You Can’t Patch

A controller that still runs the line does not get replaced because its vendor stopped issuing patches. Evaluate whether the platform recommends targeted mitigations, such as disallowing certain usage, segmentation, disabling unused services, or changing default credentials, that close the exposure and fit inside an existing maintenance window.

Continuous Monitoring and Forensic Evidence

Threat detection should understand industrial protocols such as Profinet, Modbus, CIP, BACnet, and many others and flag insecure configuration drift alongside anomalous behavior. Ask whether you can capture packets from a specific device during an incident, so containment starts with evidence rather than reconstruction.

Compliance Evidence on Demand

Defense suppliers answer to CMMC and NIST SP 800-171, EU manufacturers in covered sectors answer to NIS2, and many plants align to ISA/IEC 62443 and NIST SP 800-82. Each asks for the same proof: a current device inventory, a documented risk assessment, and a record of which controls are enforced where. The platform should produce that record continuously rather than at audit time.

The Best Manufacturing Cybersecurity Companies in 2026

1. Asimily

Asimily is the Proactive Cyber Asset Defense Platform for IoT, OT, IoMT, and IT. It unifies plant and corporate assets to quickly isolate high-risk devices.

Using agentless discovery, Asimily maps lower-level industrial assets and IoT/OT networks safely. Its ATT&CK Analysis estimates the likelihood that each device can be compromised, weighted by factors such as network segmentation, patching status, and operational context.

Asimily’s Segmentation Orchestration builds, simulates, and enforces network policies. Configuration Control detects drift and restores known good configurations, while native packet capture aids response. For unpatchable devices, Risk Simulator models the risk reduction of each mitigation before any change is made, and IoT Patching delivers firmware and password updates for supported device types. Deployment is cloud or on-premises.

One global manufacturer deployed a low-overhead collector to map deep assets previously hidden from passive tools.

Recognition: 2026 Merit Awards winner, and rated 4.9 out of 5 on Gartner Peer Insights (55 reviews, October 2026).*

*Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.

Best fit for: Manufacturers needing floor-wide visibility, risk-based prioritization, and pre-validated segmentation.

What to evaluate: Deep device discovery, risk prioritization, and policy simulation against live traffic.

2. Claroty

Claroty focuses on cyber-physical systems across industrial, healthcare, and commercial environments. Its platform covers asset management, exposure management, network protection, secure remote access, and threat detection, and the company reports deployments at more than 8,000 sites across 40 industries.

Best fit for: Large industrial enterprises that want a single OT security vendor and need secure remote access for third-party technicians.

What to evaluate: How deep discovery reaches below Purdue Level 2 in your plants, and how network protection recommendations become enforced policy on your existing NAC and firewalls.

3. Nozomi Networks

Nozomi Networks provides OT and IoT asset inventory, continuous monitoring, and threat and anomaly detection for production environments. Mitsubishi Electric completed its acquisition of Nozomi Networks in January 2026 (Business Wire), and the company lists ABB, GE Vernova, Schneider Electric, and Hitachi Energy among its partners.

Best fit for: Operations-led security programs that want monitoring closely aligned with industrial automation vendors.

What to evaluate: How findings are prioritized by exploitability on your specific devices, and what the platform does after an alert to reduce exposure.

4. Dragos

Dragos is an industrial cybersecurity specialist known for OT threat detection, threat intelligence on groups that target industrial environments, playbooks, and incident response services. Accenture’s majority investment in Dragos closed in September 2026 (SecurityWeek), and Dragos continues to operate under its own name.

Best fit for: ICS-heavy operators that prioritize threat intelligence and want an OT incident response partner to be there if needed.

What to evaluate: Coverage of the IoT and IT devices that share the plant network, and how risk reduction moves from detection to enforced controls.

5. Armis

Armis Centrix is an agentless asset intelligence and exposure management platform spanning IT, OT, IoT, medical devices, and cloud. ServiceNow completed its acquisition of Armis in April 2026 (Verdict), and Armis Centrix remains available as a standalone product.

Best fit for: Enterprises that run IT and security workflows in ServiceNow and want device risk inside those workflows.

What to evaluate: OT protocol depth on the plant floor, and whether segmentation policy can be created, simulated, and maintained from the same platform.

6. Forescout

Forescout discovers and classifies devices across IT, OT, and IoT and pairs that visibility with policy enforcement and automated response, building on its network access control heritage. Its platform was renamed Forescout Vistaro in June 2026 (Forescout).

Best fit for: Teams that want device visibility and access control from one vendor.

What to evaluate: How the platform previews the impact of an enforcement action on a production cell before it is applied.

7. TXOne Networks

TXOne Networks focuses exclusively on OT, with endpoint protection for industrial workstations, inline network defense appliances, and portable inspection tools for systems that cannot run software.

Best fit for: Plants protecting legacy Windows endpoints and scanning assets during scheduled maintenance.

What to evaluate: How its controls connect to a network-wide inventory and a single risk-prioritized queue.

8. Fortinet

Fortinet’s Security Fabric combines firewalls, secure networking, endpoint protection, and centralized management, with OT protocol support and ruggedized hardware for industrial sites.

Best fit for: Manufacturers consolidating networking and security on a single vendor.

What to evaluate: Where the device context and risk-prioritized policy that drive firewall rules will come from.

9. Palo Alto Networks

Palo Alto Networks extends its next-generation firewalls, segmentation, and Cortex XDR into OT environments to limit lateral movement between enterprise and production networks.

Best fit for: Enterprises extending an existing Palo Alto deployment from the data center to the plant.

What to evaluate: Visibility into unmanaged plant devices and how segmentation rules are validated against production traffic before rollout.

Other Companies Manufacturers Consider

Cisco, Tenable OT Security, Microsoft Defender for IoT, Darktrace, and CrowdStrike Falcon also appear in manufacturing evaluations, usually as extensions of an existing network or IT security investment. Teams that need staff augmentation more than a platform often pair one of the companies above with a managed security provider that has OT experience.

Choosing the Right Fit for Your Plants

Start with the constraint that has stalled your program. A team that can’t see behind its controllers should test discovery first. A team with findings but no enforcement should test whether the platform can generate, simulate, and maintain policy on the NAC and firewalls it already owns, while a team that needs an incident response partner should emphasize threat intelligence and services. Run every pilot against your own traffic, and involve the production owners who will approve any change.

[Related: OT Security: A Complete Guide to Protecting Operational Technology]

[Related: What the Mackay Sugar Shutdown Reveals About OT Segmentation Readiness]

[Related: The Best Critical Infrastructure Cybersecurity Companies in 2026]

Frequently Asked Questions About Manufacturing Cybersecurity Companies

What Is the Best Cybersecurity Company for Manufacturing?

The best fit depends on where your program is stuck. For manufacturers that need agentless visibility across IoT, OT, and IT, prioritization based on real exploitability, and segmentation that is simulated against observed traffic before it is enforced, Asimily covers all three in one platform. Claroty, Nozomi Networks, and Dragos are OT specialists, and Fortinet, Palo Alto Networks, and Cisco extend network security into the plant.

What Should Manufacturers Look for in an OT Security Vendor?

Look for agentless discovery that reaches every device, including those behind PLCs and serially connected devices, prioritization by exploitability and production impact, policy you can preview before it is enforced, mitigations for unpatchable equipment, protocol-aware monitoring, and continuous compliance evidence.

How Do Manufacturers Segment OT Networks Without Downtime?

They start with the highest-risk devices, validate each policy against real, observed traffic before it is applied, and roll changes out in stages, so production owners see exactly which devices and connections would be affected. Asimily’s Policy Simulation does this, and Continuous Segmentation keeps policies current as devices change. Many plants still time major network changes to planned downtime, but a long enough simulation lets production owners approve enforcement with confidence.

Which Regulations Apply to Manufacturing Cybersecurity?

Defense suppliers must meet CMMC requirements (DoD), and those that handle controlled unclassified information must implement NIST SP 800-171 (NIST). NIS2 covers manufacturers in several EU sectors, including machinery, electronics, electrical equipment, and motor vehicles (EUR-Lex). Many plants also align to the ISA/IEC 62443 series for industrial automation and control system security (ISA) (which defines zones and conduits), and use NIST SP 800-82 as OT security guidance (NIST).

How Is OT Security Different From IT Security in Manufacturing?

OT security puts availability and safety first. Many OT devices can’t run agents or accept routine patches, so protection depends on agentless visibility, compensating controls such as segmentation, and changes that are validated before they reach production. There’s a big difference in risk to human health between OT cyber-physical systems and a server in a rack in a data center.

See How Asimily Protects the Plant Floor

Asimily gives manufacturers a complete, agentless inventory across IoT, OT, and IT, a short list of the exposures that are actually exploitable, and segmentation policy proven against real traffic before it is enforced.

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