Company lists · Data refreshed September 2026

Top 25 Control system cybersecurity consultants worldwide

Name: Control system cybersecurity consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 9,679 companies tracked

RevenueBase identified 9,679 company matches for control system cybersecurity consultants worldwide as of September 2026 and tracks 111,956 professional contacts across them, including 31,839 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for control system cybersecurity consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026. Country and city lists for control system cybersecurity consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

9,679Companies

111,956Contacts tracked

31,839Verified emails

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The 25 largest control system cybersecurity consultants worldwide

Ranked by team size

Top 25 of 9,679 company matches for control system cybersecurity consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Private Sector	Exact match	United StatesHQ recorded Sep 27, 2026	n/a	12,771 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,222 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Sep 27, 2026	501-1,000	1,378 contacts →
	Exact match “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,232 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	S2grupo	Exact match	Valencia, SpainHQ recorded Sep 27, 2026	501-1,000	683 contacts →
	Exact match “We are a European company specialising in cybersecurity, cyberintelligence and cyberdefence, with more than 20 years of experience protecting critical infrastructures and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	I-Tracing	Exact match	Courbevoie, FranceHQ recorded Sep 27, 2026	1,001-5,000	639 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Secunet Security Networks AG	Exact match	Essen, GermanyHQ recorded Sep 27, 2026	1,001-5,000	623 contacts →
	Exact match “secunet – We are the Guardians of Europe's Digital Freedom.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Dragos, INC	Exact match	Hanover, MD, United StatesHQ recorded Sep 27, 2026	501-1,000	551 contacts →
	Exact match “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Paramount Computer Systems	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 27, 2026	201-500	525 contacts →
	Exact match “Protection is Paramount!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Ultraviolet Cyber	Exact match	Mclean, VA, United StatesHQ recorded Sep 27, 2026	501-1,000	523 contacts →
	Exact match “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	own.security	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	506 contacts →
	Exact match “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Securityhq	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	502 contacts →
	Exact match “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Sirar By STC	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 27, 2026	201-500	493 contacts →
	Exact match “World-class leading edge cyber capabilities to enable and protect economic and physical critical infrastructure and government services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Aujas Cybersecurity	Exact match	Cupertino, CA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	473 contacts →
	Exact match “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Palo Alto Networks Unit 42	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	441 contacts →
	Exact match “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Safeway	Exact match	Sao Paulo, BrazilHQ recorded Sep 27, 2026	201-500	399 contacts →
	Exact match “A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Acpl Systems	Exact match	Gurgaon, IndiaHQ recorded Sep 27, 2026	201-500	398 contacts →
	Exact match “ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Kudelski Security	Exact match	Cheseaux, United StatesHQ recorded Sep 27, 2026	201-500	392 contacts →
	Exact match “Kudelski Security is a premier cybersecurity solutions provider, working with the most security-conscious organizations in Europe and across the United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	PT Itsec Asia TBK	Exact match	Jakarta, IndonesiaHQ recorded Sep 27, 2026	201-500	388 contacts →
	Exact match “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Neverhack	Exact match	Paris, FranceHQ recorded Sep 27, 2026	1,001-5,000	382 contacts →
	Exact match “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Esec Forte Technologies	Exact match	Gurugram, IndiaHQ recorded Sep 27, 2026	201-500	363 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	T Security - Dach	Exact match	Bonn, GermanyHQ recorded Sep 27, 2026	1,001-5,000	363 contacts →
	Exact match “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	SK Shieldus	Exact match	경기도, South KoreaHQ recorded Sep 27, 2026	5,001-10,000	348 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Techdefence	Exact match	Ahmedabad, IndiaHQ recorded Sep 27, 2026	201-500	340 contacts →
	Exact match “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “control system cybersecurity consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,679 control system cybersecurity consultants worldwide

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Control system cybersecurity consultants worldwide at a glance

As of Sep 27, 2026

28.4%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

5,808

11-50

2,988

51-200

683

201-500

135

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for control system cybersecurity consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “control system cybersecurity consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 31,839 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Control system cybersecurity consultants by location

69 lists · largest first

Every Control system cybersecurity consultants 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “control system cybersecurity consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many control system cybersecurity consultants are there worldwide?

RevenueBase identified 9,679 company matches for control system cybersecurity consultants worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Private Sector tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most control system cybersecurity consultants?

The United States leads with 2,329 companies, followed by India (645) and the United Kingdom (639). Every control system cybersecurity consultants list by country and city is linked on this page.

Which city has the most control system cybersecurity consultants?

London leads with 243 company records, followed by Paris (133) and Sao Paulo (85).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 31,839 professional contacts with verified work emails tracked across these 9,679 companies; direct dials are available where recorded.

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 SmartSearch, 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.