Company lists · Data refreshed September 2026

Top 25 Industrial control system security based in France

Name: Industrial control system security based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 86 companies tracked

RevenueBase identified 86 industrial control system security headquartered in France as of September 2026 and tracks 1,541 professional contacts across them, including 298 with verified work emails and 39 with mobile numbers. Paris is the largest hub.

This list covers industrial control system security headquartered in France, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

86Companies

1,541Contacts tracked

298Verified emails

39Mobile numbers

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The 25 largest industrial control system security based in France

Ranked by team size

Top 25 of 86 industrial control system security based in France, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names industrial control system security: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ItrustIndirect evidence	Toulouse, FranceHQ checked Sep 3, 2026	51-200	126
	“Since January 2007, ITrust has been offering cybersecurity solutions and expertise in 6 different countries on the European market.” Source: company website · checked Sep 3, 2026
2	CS In CybersecurityIndirect evidence	Le Plessis-Robinson, FranceHQ checked Sep 3, 2026	51-200	75
	“Acteur majeur de la cybersécurité, CS Group s'appuie sur ses équipes sont composées d’experts pluridisciplinaires qui offrent à nos clients une vision claire et une capacité…” Source: company website · checked Sep 3, 2026
3	EshardIndirect evidence	Pessac, FranceHQ checked Sep 3, 2026	11-50	49
	“Expertise in cybersecurity testing takes years to build but can be lost in seconds.” Source: company website · checked Sep 3, 2026
4	CybermakerIndirect evidence	Saint Cloud, FranceHQ checked Sep 3, 2026	11-50	26
	“CyberMaker – Sécuriser les entreprises, former les experts CyberMaker est né d’un constat : la cybersécurité souffre d’une pénurie critique de talents.” Source: company website · checked Sep 3, 2026
5	Sec-ItIndirect evidence	Levallois-perret, FranceHQ checked Sep 3, 2026	11-50	26
	“SEC-IT, filiale du groupe MCA, est le partenaire de référence en cybersécurité, combinant expertise en audit conseil, sécurité opérationnelle et formation pour accompagner les…” Source: company website · checked Sep 3, 2026
6	Five NinesIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	26
	“Five Nines est née en 2019 d’un constat simple, celui d’un manque crucial de compétences et d’expérience dans la sécurisation de la transformation digitale des entreprises.” Source: company website · checked Sep 3, 2026
7	SeckiotStrong evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	24
	“Seckiot est un éditeur de logiciels français, spécialisé dans la cybersécurité dédié aux systèmes industriels.” Source: company website · checked Sep 3, 2026
8	SeclabPartial evidence	Perols, FranceHQ checked Sep 3, 2026	11-50	22
	“As France's leading provider of cyber protection for critical systems, Seclab secures exchanges by simplifying interconnection architectures and eliminating the risks associated…” Source: company website · checked Sep 3, 2026
9	Kyron Solutions InformatiquesIndirect evidence	Toulouse, FranceHQ checked Sep 3, 2026	11-50	22
	Source: company website · checked Sep 3, 2026
10	Ého.LinkIndirect evidence	FranceHQ checked Sep 3, 2026	11-50	16
	“ÉHO.LINK est une équipe de 25 personnes ancrée à Marseille.” Source: company website · checked Sep 3, 2026
11	SaycuritIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	13
	“SAYCURIT est une société d’intégration spécialisée dans le domaine de la sécurité.” Source: company website · checked Sep 3, 2026
12	DND AgencyIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	13
	“Are we legion?” Source: company website · checked Sep 3, 2026
13	IriguardPartial evidence	Puteaux, FranceHQ checked Sep 3, 2026	11-50	13
	“L'évolution constante des usages numériques et des actes malveillants en découlant ont engendré un besoin toujours plus important en matière de protection des systèmes…” Source: company website · checked Sep 3, 2026
14	Cyber-SsiPartial evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	11
	“Expert en sécurité et défense des systèmes numériques, nous accompagnons les entreprises et les organismes publics dans la protection de leurs infrastructures et de leurs produits…” Source: company website · checked Sep 3, 2026
15	CybershenIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	1-10	10
	“Cybershen permet de mettre en place et de piloter une cybersécurité globale et sans efforts.” Source: company website · checked Sep 3, 2026
16	Highjack Offensive CybersecurityIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	1-10	9
	“Chez High Jack, nous sommes bien plus que des accompagnateurs de digitalisation, nous sommes des catalyseurs de la transformation numérique de votre structure!” Source: company website · checked Sep 3, 2026
17	HexadusPartial evidence	Clermont-Ferrand, FranceHQ checked Sep 3, 2026	11-50	8
	“HEXADUS est un bureau d'études en automatisme, informatique industrielle et cybersécurité OT.” Source: company website · checked Sep 3, 2026
18	CyberleadIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	1-10	6
	“CyberLead est une société de conseil spécialisée en cybersécurité IT et OT, offrant une gamme complète de services, allant du conseil stratégique à l’intégration de solutions de…” Source: company website · checked Sep 3, 2026
19	AiotrustPartial evidence	Villeurbanne, FranceHQ checked Sep 3, 2026	1-10	5
	“AIoTrust – Cybersecurity for operational trust Founded in 2023, AIoTrust builds embedded systems designed to bring real-time visibility and cyber integrity to the heart of…” Source: company website · checked Sep 3, 2026
20	WELANPartial evidence	Paris, FranceHQ checked Sep 3, 2026	1-10	4
	“WELAN est une société de conseil en cybersécurité qui accompagne les entreprises de toutes tailles désireuses de se protéger contre les menaces numériques croissantes.” Source: company website · checked Sep 3, 2026
21	OxydianIndirect evidence	Labege, FranceHQ checked Sep 3, 2026	1-10	4
	“Oxydian est une société innovante de service en cybersécurité Nos experts en sécurité offensive réalisent des audits intrusifs et développent des solutions techniques novatrices…” Source: company website · checked Sep 3, 2026
22	Hozzeo CybersecurityIndirect evidence	Lyon, FranceHQ checked Sep 3, 2026	1-10	4
	“Pure Player de la cybersécurité opérationnelle défensive et offensive, Hozzeo Cybersecurity, entité de l'écosystème Hozzeo Group, accompagne les entreprises et collectivités dans…” Source: company website · checked Sep 3, 2026
23	AnguisIndirect evidence	Toulouse, FranceHQ checked Sep 3, 2026	1-10	4
	“Chez Anguis, nous sommes bien plus qu'une entreprise de sécurité informatique : nous sommes des architectes de la confiance numérique.” Source: company website · checked Sep 3, 2026
24	AkonisIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	4
	“AKONIS est un pure-player français du conseil, de l’intégration et de l’ingénierie en cybersécurité.” Source: company website · checked Sep 3, 2026
25	Fortress CybersecurityPartial evidence	Issy-Les-Moulineaux, FranceHQ checked Sep 3, 2026	1-10	4
	“Fortress Cybersecurity a vocation à couvrir l’ensemble des besoins en cybersécurité des entreprises qui disposent ou opèrent des installations industrielles.” Source: company website · checked Sep 3, 2026

Showing 25 of 86 industrial control system security based in France

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Industrial control system security based in France at a glance

As of Sep 3, 2026

1-10Median size (employees)

ParisLargest hub · 24 HQs

39Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Verified emails by last verification

0–30

31–60

61–90

168

90–180

107

180+

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, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “industrial control system security”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among industrial control system security, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
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 an evidence 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, 298 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 3, 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.

Frequently asked

How many industrial control system security are there based in France?

RevenueBase identified 86 industrial control system security headquartered in France 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?

Itrust, headquartered in Toulouse, tops this list with the largest team on record.

Which city has the most industrial control system security?

Paris leads with 24 headquartered companies, followed by Lyon (5) and Toulouse (3).

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 298 verified decision-maker contacts tracked across these 86 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 3, 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.