Company lists · Data refreshed September 2026
Top 25 Industrial control system security software companies worldwide
RevenueBase identified 1,332 industrial control system security software companies worldwide as of September 2026 and tracks 30,027 professional contacts across them, including 10,052 with verified work emails. The United States is the largest market and London the largest hub.
This list covers industrial control system security software companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for industrial control system security software companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest industrial control system security software companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,447 contacts → | ||||
Partial evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,719 contacts → | ||||
Indirect evidence “When technology enables progress, ESET is here to protect it.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,231 contacts → | ||||
Partial evidence “PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,119 contacts → | ||||
Indirect evidence “OPSWAT protects critical infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,010 contacts → | ||||
Strong evidence “Founded in 1982, Green Hills Software is the worldwide leader in embedded safety and security.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 725 contacts → | ||||
Partial evidence “Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 627 contacts → | ||||
Strong evidence “nVent HOFFMAN leading designer and manufacturer of systems that safely and reliably protect the electronic controls and mission critical electrical systems in industrial, data…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 593 contacts → | ||||
Partial evidence “We are a European cybersecurity company that helps businesses secure critical data and communications between systems, automated applications, and people with defensive…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 581 contacts → | ||||
Indirect evidence “Founded in 1995, AhnLab, Inc, the global cybersecurity company, delivers comprehensive protection for endpoints, networks, transactions, and essential services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 551 contacts → | ||||
Partial evidence “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 386 contacts → | ||||
Partial evidence “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 375 contacts → | ||||
Indirect evidence “We protect the world’s critical infrastructure from cyber threats.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 304 contacts → | ||||
Partial evidence “Infopercept is a global cybersecurity company dedicated to transforming how organizations perceive and implement security.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 282 contacts → | ||||
Partial evidence “Under the Red Lion brand, HMS offers secure, scalable data access and control from edge to cloud.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 276 contacts → | ||||
Indirect evidence “In the ever-growing world of Cloud Computing, Big Data and the Internet of Things, NIKSUN® is the industry leader in making the unknown known.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 269 contacts → | ||||
Partial evidence “As a leading IT security enterprise, the SITS Group stands for end-to-end security.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 262 contacts → | ||||
Indirect evidence “MNC Automation Pvt.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 188 contacts → | ||||
Strong evidence “NextGen Security is a security systems integrator that offers industrial companies best in class industry knowledge, engineering design, implementation, management and on-going…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 175 contacts → | ||||
Strong evidence “Vertech is an industrial control systems integration firm providing a complete range of engineering and technical services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 165 contacts → | ||||
Partial evidence “Ovarro's technology is used throughout the world to monitor, control and manage critical and national infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 158 contacts → | ||||
Partial evidence “Securico Electronics India Limited**, a trusted name in electronic security and automation solutions with over **Four Decades of experience**.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 151 contacts → | ||||
Strong evidence “Tridium, a global software and technology company, is the developer of the Niagara Framework®, a software platform that enables the integration of disparate systems and devices -…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 150 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 138 contacts → | ||||
Indirect evidence “European leader in intrusion detection and advanced threat detection, Gatewatcher has been protecting the critical networks of large companies as well as public institutions since…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 138 contacts → | ||||
Partial evidence “Netsecurity is a dedicated cyber security company that helps companies before, during and after an attack.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: industrial control system security software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names industrial control system security software companies.
- Partial evidence
- Its own public description names part of industrial control system security software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name industrial control system security software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,332 industrial control system security software companies worldwide
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Industrial control system security software companies worldwide at a glance
As of Sep 27, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among industrial control system security software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for industrial control system security software companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “industrial control system security software companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names industrial control system security software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among industrial control system security software companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 10,052 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Industrial control system security software companies by location
12 lists · largest firstEvery Industrial control system security software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Industrial control system security software companies based in the United States281
- Industrial control system security software companies based in India84
- Industrial control system security software companies based in the United Kingdom77
- Industrial control system security software companies based in Italy49
- Industrial control system security software companies based in Canada43
- Industrial control system security software companies based in Brazil36
- Industrial control system security software companies based in France34
- Industrial control system security software companies based in Germany31
- Industrial control system security software companies based in Australia28
- Industrial control system security software companies based in Türkiye27
- Industrial control system security software companies based in the Netherlands27
- Industrial control system security software companies based in Israel26
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names industrial control system security software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many industrial control system security software companies are there worldwide?
RevenueBase identified 1,332 industrial control system security software companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Trellix, headquartered in Plano, tops this list with the largest team on record.
Which country has the most industrial control system security software companies?
The United States leads with 281 companies, followed by India (84) and the United Kingdom (77). Every industrial control system security software companies list by country and city is linked on this page.
Which city has the most industrial control system security software companies?
London leads with 20 headquartered companies, followed by Houston (16) and Austin (10).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 10,052 verified decision-maker contacts tracked across these 1,332 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.