Company lists · Data refreshed September 2026

Top 25 Cybersecurity companies for industrial control systems based in Paris, France

Name: Cybersecurity companies for industrial control systems based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 119 companies tracked

RevenueBase identified 119 cybersecurity companies for industrial control systems headquartered in Paris, France as of September 2026 and tracks 6,551 professional contacts across them, including 3,096 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers cybersecurity companies for industrial control systems headquartered in Paris, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

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 28, 2026 86% judged on-target in blind review

119Companies

6,551Contacts tracked

3,096Verified emails

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The 25 largest cybersecurity companies for industrial control systems based in Paris, France

Ranked by team size

Top 25 of 119 cybersecurity companies for industrial control systems based in Paris, France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity companies for industrial control systems: 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	own.security	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	506 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
2	Neverhack	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1,001-5,000	382 contacts →
	Partial evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
3	Gatewatcher	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	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 28, 2026
4	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	117 contacts →
	Partial evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 28, 2026
5	Quarkslab	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	95 contacts →
	Indirect evidence “Fondée en 2011 par Fred Raynal, Quarkslab est une entreprise française spécialisée dans la cybersécurité et plus spécifiquement dans la protection et l'analyse des logiciels.” Source: RevenueBase Database · checked Sep 28, 2026
6	Magellan Sécurité	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	75 contacts →
	Indirect evidence “Magellan Sécurité, an entity of the Magellan Partners Group, offers integrated solutions to protect against internal threats and cyber attacks.” Source: RevenueBase Database · checked Sep 28, 2026
7	Strangebee	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	68 contacts →
	Partial evidence “StrangeBee is a cybersecurity software company based in Paris.” Source: RevenueBase Database · checked Sep 28, 2026
8	ERIUM	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	37 contacts →
	Indirect evidence “To be confident in your cyber defences, every person and technology must be confronted by reality.” Source: RevenueBase Database · checked Sep 28, 2026
9	Kytl Security	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	35 contacts →
	Indirect evidence “KYTL \| Spécialiste de la protection des données et des environnements critiques; Fondée par des experts en cybersécurité cumulant plus de 15 ans d’expérience, KYTL accompagne les…” Source: RevenueBase Database · checked Sep 28, 2026
10	ACG Cybersecurity	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
11	Abakus Sécurité	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Expertise en cybersécurité - Abakus Sécurité vous accompagne sur l'ensemble du cycle de vie de vos projets en cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
12	Randorisec	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 28, 2026
13	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
14	Seckiot	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Seckiot est un éditeur de logiciels français, spécialisé dans la cybersécurité dédié aux systèmes industriels.” Source: RevenueBase Database · checked Sep 28, 2026
15	WLF	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Sep 28, 2026
16	Harmonie Technologie Site	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	21 contacts →
	Partial evidence “As the main independent provider of cybersecurity and risk management consulting and technical expertise, Harmonie Technologie partners with key accounts (mainly from CAC40 and…” Source: RevenueBase Database · checked Sep 28, 2026
17	Nomios France	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	15 contacts →
	Indirect evidence “Nomios est un intégrateur en cybersécurité depuis 2004, né à partir du constat que la sécurité dans les entreprises était un métier de spécialiste.” Source: RevenueBase Database · checked Sep 28, 2026
18	Intuity	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Nous aidons les entreprises à sécuriser leurs actifs, tels que leurs applications web et leurs systèmes d'information, tout en renforçant la sécurité globale des organisations.” Source: RevenueBase Database · checked Sep 28, 2026
19	Alfabet Group	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Alfabet Group est une entreprise qui propose des services managés de la surveillance des évènements en cybersécurité et accompagne les Grand comptes et les entreprises de taille…” Source: RevenueBase Database · checked Sep 28, 2026
20	Saycurit	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “SAYCURIT est une société d’intégration spécialisée dans le domaine de la sécurité.” Source: RevenueBase Database · checked Sep 28, 2026
21	Moka Works	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Moka Works est spécialisée en cybersécurité et gestion d'infrastructures IT, offrant des solutions techniques avancées adaptées aux besoins de chaque entreprise.” Source: RevenueBase Database · checked Sep 28, 2026
22	DND Agency	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Are we legion?” Source: RevenueBase Database · checked Sep 28, 2026
23	STEEF	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Cabinet de Conseils, Créatif et Authentique construit autour d’une communauté composée d’Experts en Cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
24	Resiliant	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Cabinet d'expertise en CYBERSECURITE tourné vers l'avenir CONSULTING La gouvernance et la gestion des risques sont les bases de la sécurité de l’information au sein d’une…” Source: RevenueBase Database · checked Sep 28, 2026
25	Cybershen	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Cybershen permet de mettre en place et de piloter une cybersécurité globale et sans efforts.” Source: RevenueBase Database · checked Sep 28, 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: cybersecurity companies for industrial control systems. 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 cybersecurity companies for industrial control systems.
Partial evidence: Its own public description names part of cybersecurity companies for industrial control systems, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity companies for industrial control systems. 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 119 cybersecurity companies for industrial control systems based in Paris, France

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Cybersecurity companies for industrial control systems based in Paris, France at a glance

As of Sep 28, 2026

47.3%Verified-email coverage

55.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole France list rather than for Paris, so it is reported there. Company counts and contact totals on this page are exact for Paris, over 119 companies.

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 cybersecurity companies for industrial control systems, 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.
What qualifies: Companies headquartered in Paris, France whose own description of what they do matches “cybersecurity companies for industrial control systems”. 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 cybersecurity companies for industrial control systems), 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 cybersecurity companies for industrial control systems, and records with no verified work email. Companies headquartered outside Paris 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 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, 3,096 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 28, 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

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 cybersecurity companies for industrial control systems, 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 cybersecurity companies for industrial control systems are there based in Paris, France?

RevenueBase identified 119 cybersecurity companies for industrial control systems headquartered in Paris, 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?

own.security, headquartered in Paris, tops this list with the largest team on record.

Which city in France has the most cybersecurity companies for industrial control systems?

Paris leads France with 119 headquartered companies, followed by Lyon (12) and Boulogne-Billancourt (7).

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 3,096 verified decision-maker contacts tracked across these 119 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 28, 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.