Company lists · Data refreshed September 2026

Top 25 Operational technology security companies worldwide

Name: Operational technology security companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 2,408 companies tracked

RevenueBase identified 2,408 operational technology security companies worldwide as of September 2026 and tracks 45,720 professional contacts across them, including 13,650 with verified work emails and 3,008 with mobile numbers. India is the largest market and Dubai the largest hub.

This list covers operational technology security 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 5, 2026. Country and city lists for operational technology security 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

2,408Companies

45,720Contacts tracked

13,650Verified emails

3,008Mobile numbers

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The 25 largest operational technology security companies worldwide

Ranked by team size

Top 25 of 2,408 operational technology security companies worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to operational technology security companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	EOH	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 5, 2026	1,001-5,000	2,093 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
2	PAS	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	1,231 contacts →
	Indirect 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 5, 2026
3	SISA	Partial evidence	Bengaluru, IndiaHQ checked Sep 5, 2026	201-500	743 contacts →
	Partial evidence “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Source: RevenueBase Database · checked Sep 5, 2026
4	S2grupo	Indirect evidence	Valencia, SpainHQ checked Sep 5, 2026	501-1,000	683 contacts →
	Indirect evidence “We are a European company specialising in cybersecurity, cyberintelligence and cyberdefence, with more than 20 years of experience protecting critical infrastructures and…” Source: RevenueBase Database · checked Sep 5, 2026
5	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 5, 2026	1,001-5,000	639 contacts →
	Indirect evidence “I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Source: RevenueBase Database · checked Sep 5, 2026
6	Everfox	Indirect evidence	Herndon, United StatesHQ checked Sep 5, 2026	1,001-5,000	636 contacts →
	Indirect evidence “Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.” Source: RevenueBase Database · checked Sep 5, 2026
7	Secunet Security Networks AG	Indirect evidence	Essen, GermanyHQ checked Sep 5, 2026	1,001-5,000	623 contacts →
	Indirect evidence “secunet – We are the Guardians of Europe's Digital Freedom.” Source: RevenueBase Database · checked Sep 5, 2026
8	Omegapoint	Indirect evidence	Stockholm, SwedenHQ checked Sep 5, 2026	501-1,000	619 contacts →
	Indirect evidence “Omegapoint hjälper dig att utveckla och cybersäkra din digitala verksamhet.” Source: RevenueBase Database · checked Sep 5, 2026
9	Dragos, INC	Partial evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	501-1,000	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 5, 2026
10	Paramount Computer Systems	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 5, 2026	201-500	525 contacts →
	Indirect evidence “Protection is Paramount!” Source: RevenueBase Database · checked Sep 5, 2026
11	Sirar By STC	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 5, 2026	201-500	493 contacts →
	Indirect evidence “World-class leading edge cyber capabilities to enable and protect economic and physical critical infrastructure and government services.” Source: RevenueBase Database · checked Sep 5, 2026
12	Acpl Systems	Partial evidence	Gurgaon, IndiaHQ checked Sep 5, 2026	201-500	398 contacts →
	Partial evidence “ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Source: RevenueBase Database · checked Sep 5, 2026
13	PT Itsec Asia TBK	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 5, 2026	201-500	388 contacts →
	Indirect evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 5, 2026
14	Esec Forte Technologies	Strong evidence	Gurugram, IndiaHQ checked Sep 5, 2026	201-500	363 contacts →
	Strong evidence “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Source: RevenueBase Database · checked Sep 5, 2026
15	T Security - Dach	Indirect evidence	Bonn, GermanyHQ checked Sep 5, 2026	1,001-5,000	363 contacts →
	Indirect evidence “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Source: RevenueBase Database · checked Sep 5, 2026
16	Kritilabs Technologies	Partial evidence	Chennai, IndiaHQ checked Sep 5, 2026	201-500	355 contacts →
	Partial evidence “KritiLabs helps companies across verticals to effectively manage their remote assets on a real-time basis through its IoT security platform, ALS.” Source: RevenueBase Database · checked Sep 5, 2026
17	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 5, 2026	201-500	340 contacts →
	Indirect evidence “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Source: RevenueBase Database · checked Sep 5, 2026
18	Truesec	Indirect evidence	SwedenHQ checked Sep 5, 2026	201-500	332 contacts →
	Indirect evidence “Prevent Breach & Minimize Impact” Source: RevenueBase Database · checked Sep 5, 2026
19	Nviso Security	Partial evidence	Brussels, BelgiumHQ checked Sep 5, 2026	201-500	315 contacts →
	Partial evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 5, 2026
20	Infopercept	Partial evidence	Ahmedabad, IndiaHQ checked Sep 5, 2026	201-500	304 contacts →
	Partial evidence “Infopercept is a global cybersecurity company dedicated to transforming how organizations perceive and implement security.” Source: RevenueBase Database · checked Sep 5, 2026
21	Bridewell	Partial evidence	Reading, United KingdomHQ checked Sep 5, 2026	201-500	303 contacts →
	Partial evidence “Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…” Source: RevenueBase Database · checked Sep 5, 2026
22	Secureyes	Indirect evidence	Bangalore, IndiaHQ checked Sep 5, 2026	201-500	270 contacts →
	Indirect evidence “SecurEyes is a global cybersecurity specialist firm offering advisory plus consulting services and reg-tech products solving for cybersecurity challenges so that business leaders…” Source: RevenueBase Database · checked Sep 5, 2026
23	Cyberani By Aramco Digital	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 5, 2026	201-500	241 contacts →
	Indirect evidence “Cyberani is an Aramco Digital company that is dedicated to safeguarding the digital frontiers of industry leaders and government agencies.” Source: RevenueBase Database · checked Sep 5, 2026
24	Essen Vision Software	Partial evidence	Mumbai, IndiaHQ checked Sep 5, 2026	201-500	229 contacts →
	Partial evidence “We are Essen Vision, ‘Digital Security Specialists’ whose sole focus for more than 28 years has been to provide digital protection that unlocks the true value of your security…” Source: RevenueBase Database · checked Sep 5, 2026
25	Cybergate Defense	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 5, 2026	51-200	217 contacts →
	Partial evidence “CyberGate is an Emirati establishment founded to provide Cybersecurity services that would improve the overarching security posture of governments and organizations.” Source: RevenueBase Database · checked Sep 5, 2026

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: operational technology security 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 operational technology security companies.
Partial evidence: Its own public description names part of operational technology security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name operational technology security 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 2,408 operational technology security companies worldwide

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Operational technology security companies worldwide at a glance

As of Sep 5, 2026

29.9%Verified-email coverage

6.6%Mobile-number coverage

19.0Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Dubai

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

1,049

11-50

986

51-200

276

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 operational technology security 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: 27 countries, largest first: India, the United States, the United Arab Emirates, the United Kingdom, Mexico, Türkiye, Germany, Australia, South Africa, Canada and 17 more. Country and city lists for operational technology security companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “operational technology security 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 operational technology security 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 operational technology security 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, 13,650 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 between September 5, 2026 and September 14, 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.

Operational technology security companies by location

35 lists · largest first

Every Operational technology security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 operational technology security 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 operational technology security companies are there worldwide?

RevenueBase identified 2,408 operational technology security 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?

EOH, headquartered in Johannesburg, tops this list with the largest team on record.

Which country has the most operational technology security companies?

India leads with 602 companies, followed by the United States (368) and the United Arab Emirates (152). Every operational technology security companies list by country and city is linked on this page.

Which city has the most operational technology security companies?

Dubai leads with 84 headquartered companies, followed by Hyderabad (50) and London (47).

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 13,650 verified decision-maker contacts tracked across these 2,408 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 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.