Company lists · Data refreshed September 2026

Top 25 Cybersecurity engineers based in France

Name: Cybersecurity engineers based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 502 companies tracked

RevenueBase identified 502 cybersecurity engineers headquartered in France as of September 2026 and tracks 7,441 professional contacts across them, including 2,387 with verified work emails and 162 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity engineers 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

502Companies

7,441Contacts tracked

2,387Verified emails

162Mobile numbers

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The 25 largest cybersecurity engineers based in France

Ranked by team size

Top 25 of 502 cybersecurity engineers based in France, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity engineers: 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	I-Tracing	Partial evidence	Courbevoie, France	1,001-5,000	643 contacts →
	Partial 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 1, 2026
2	own.security	Partial evidence	Rennes, France	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 1, 2026
3	Metsys	Indirect evidence	Lille, France	501-1,000	408 contacts →
	Indirect evidence “Metsys est un intégrateur de solutions de cybersécurité, d’infrastructure et de cloud.” Source: RevenueBase Database · checked Sep 1, 2026
4	Devoteam Cyber Trust	Partial evidence	Levallois-Perret, France	10001+	342 contacts →
	Partial evidence “Devoteam Cyber Trust is the cybersecurity specialist arm of the Devoteam Group.” Source: RevenueBase Database · checked Sep 1, 2026
5	Airbus Defence And Space Cyber	Indirect evidence	Elancourt, France	501-1,000	223 contacts →
	Indirect evidence “The Cyber business of Airbus Defence and Space is a European specialist in cyber security for defence and aerospace systems and assets.” Source: RevenueBase Database · checked Sep 1, 2026
6	Synacktiv	Indirect evidence	Toulouse, France	51-200	170 contacts →
	Indirect evidence “Synacktiv is an offensive security company founded in 2012 by several security experts.” Source: RevenueBase Database · checked Sep 1, 2026
7	Itrust	Partial evidence	Toulouse, France	51-200	126 contacts →
	Partial evidence “Since January 2007, ITrust has been offering cybersecurity solutions and expertise in 6 different countries on the European market.” Source: RevenueBase Database · checked Sep 1, 2026
8	Quarkslab	Indirect evidence	Paris, France	51-200	94 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 1, 2026
9	CS In Cybersecurity	Indirect evidence	Le Plessis-Robinson, France	51-200	75 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026
10	Aduneo	Indirect evidence	Malakoff, France	51-200	73 contacts →
	Indirect evidence “Aduneo vous accompagne à chaque étape pour protéger vos identités, sécuriser vos données et simplifier votre quotidien.” Source: RevenueBase Database · checked Sep 1, 2026
11	LEXFO	Indirect evidence	Paris, France	51-200	65 contacts →
	Indirect evidence “LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.” Source: RevenueBase Database · checked Sep 1, 2026
12	OLFEO	Partial evidence	Massy, France	51-200	60 contacts →
	Partial evidence “Olfeo is a French company with over two decades of experience in securing internet access and a strong focus on cybersecurity and digital sovereignty.” Source: RevenueBase Database · checked Sep 1, 2026
13	Scassi	Indirect evidence	France	51-200	57 contacts →
	Indirect evidence “Nos collaborateurs, experts dans les domaines de la security et la safety, interviennent depuis la réalisation des analyses de risque jusqu'à la recette sécurité du projet confié…” Source: RevenueBase Database · checked Sep 1, 2026
14	Cyberlift	Indirect evidence	Paris, France	51-200	55 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 1, 2026
15	Techso Group	Indirect evidence	Paris, France	51-200	54 contacts →
	Indirect evidence “TECHSO GROUP est un cabinet international spécialisé en cybersécurité, intervenant auprès d’institutions financières, d’organisations publiques et d’opérateurs d’infrastructures…” Source: RevenueBase Database · checked Sep 1, 2026
16	Sealsq	Indirect evidence	Meyreuil, France	51-200	53 contacts →
	Indirect evidence “SEALSQ develops sovereign semiconductor security technologies designed to protect connected devices, communications, and digital infrastructure in the AI and quantum era.” Source: RevenueBase Database · checked Sep 1, 2026
17	AISI	Indirect evidence	Montpellier, France	51-200	50 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 1, 2026
18	Adenis	Indirect evidence	Bagnolet, France	51-200	43 contacts →
	Indirect evidence “La cybersécurité ne doit pas être qu’une mesure défensive; elle est aussi un avantage secret pour booster votre chiffre d'affaires.” Source: RevenueBase Database · checked Sep 1, 2026
19	Ornisec	Indirect evidence	Rennes, France	11-50	40 contacts →
	Indirect evidence “ORNISEC est un cabinet d’expertise à la pointe de la cybersécurité, qualifié PASSI RGS, PACS et PASSI LPM par l'ANSSI.” Source: RevenueBase Database · checked Sep 1, 2026
20	CYSEC	Partial evidence	Toulouse, France	11-50	39 contacts →
	Partial evidence “CYSEC is a European cybersecurity company based in Luxembourg with additional locations in Switzerland and France.” Source: RevenueBase Database · checked Sep 1, 2026
21	Løvell	Indirect evidence	Paris, France	11-50	38 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 1, 2026
22	ERIUM	Indirect evidence	France	51-200	38 contacts →
	Indirect evidence “To be confident in your cyber defences, every person and technology must be confronted by reality.” Source: RevenueBase Database · checked Sep 1, 2026
23	MGM Solutions	Indirect evidence	Bron, France	11-50	35 contacts →
	Indirect evidence “En cas d’urgence cyber, contactez le CERT by M.G.M: M.G.M.” Source: RevenueBase Database · checked Sep 1, 2026
24	Kytl Security	Indirect evidence	Paris, France	11-50	34 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 1, 2026
25	Excube	Indirect evidence	Lyon, France	11-50	33 contacts →
	Indirect evidence “Notre positionnement Fondé en 2018, EXCUBE, cabinet-conseil spécialisé en Cybersécurité, délivre ses prestations en s’appuyant sur la connaissance du métier de ses clients…” Source: RevenueBase Database · checked Sep 1, 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 engineers. 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 engineers.
Partial evidence: Its own public description names part of cybersecurity engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity engineers. 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 502 cybersecurity engineers based in France

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Cybersecurity engineers based in France at a glance

As of Sep 1, 2026

32.1%Verified-email coverage

2.2%Mobile-number coverage

14.8Average contacts per company

1-10Median size (employees)

31.7%Largest-city concentration · Paris

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

330

11-50

124

51-200

201-500

501-1,000

1,001-5,000

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 cybersecurity engineers, 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 France whose own description of what they do matches “cybersecurity engineers”. 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 engineers), 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 engineers, 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 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, 2,387 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 1, 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.

Cybersecurity engineers by metro

Cybersecurity engineers in Paris159

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 engineers, 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 engineers are there based in France?

RevenueBase identified 502 cybersecurity engineers 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?

I-Tracing, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most cybersecurity engineers?

Paris leads with 159 headquartered companies, followed by Lyon (18) and Toulouse (11).

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 2,387 verified decision-maker contacts tracked across these 502 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 1, 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.