Company lists · Data refreshed September 2026

Top 25 Military cybersecurity companies based in France

Name: Military cybersecurity companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 139 companies tracked

RevenueBase identified 139 military cybersecurity companies headquartered in France as of September 2026 and tracks 7,048 professional contacts across them, including 3,034 with verified work emails and 114 with mobile numbers. Paris is the largest hub.

This list covers military cybersecurity companies 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 5, 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 5, 2026 86% judged on-target in blind review

139Companies

7,048Contacts tracked

3,034Verified emails

114Mobile numbers

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The 25 largest military cybersecurity companies based in France

Ranked by team size

Top 25 of 139 military cybersecurity companies based in France, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names military cybersecurity companies: 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	Orange CyberdefensePartial evidence	Nanterre, FranceHQ checked Sep 5, 2026	1,001-5,000	3,673
	“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: company website · checked Sep 5, 2026
2	own.securityPartial evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	506
	“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: company website · checked Sep 5, 2026
3	Airbus Defence And Space CyberIndirect evidence	Elancourt, FranceHQ checked Sep 5, 2026	501-1,000	225
	“The Cyber business of Airbus Defence and Space is a European specialist in cyber security for defence and aerospace systems and assets.” Source: company website · checked Sep 5, 2026
4	GatewatcherIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	138
	“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: company website · checked Sep 5, 2026
5	QuarkslabIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	95
	“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: company website · checked Sep 5, 2026
6	CS In CybersecurityIndirect evidence	Le Plessis-robinson, FranceHQ checked Sep 5, 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 5, 2026
7	SysdreamIndirect evidence	Levallois-perret, FranceHQ checked Sep 5, 2026	51-200	52
	“À propos de SYSDREAM : Fondée il y a plus de 20 ans, Sysdream, filiale Cybersécurité du Groupe Hub One, propose aux comptes publics et privés une offre globale de solutions…” Source: company website · checked Sep 5, 2026
8	Dcit ConseilIndirect evidence	Sene, FranceHQ checked Sep 5, 2026	n/a	47
	“DCIT Conseil, société de services de consultation spécialisée dans la cybersécurité et les technologies de l'information.” Source: company website · checked Sep 5, 2026
9	ERIUMIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	37
	“To be confident in your cyber defences, every person and technology must be confronted by reality.” Source: company website · checked Sep 5, 2026
10	RandorisecPartial evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	32
	“Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: company website · checked Sep 5, 2026
11	Sec-ItIndirect evidence	Levallois-perret, FranceHQ checked Sep 5, 2026	11-50	27
	“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 5, 2026
12	Five NinesIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	25
	“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 5, 2026
13	BecycureIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	23
	“Nous sommes une entreprise résolument orientée vers les services liés au domaine de la Cybersécurité.” Source: company website · checked Sep 5, 2026
14	SeclabIndirect evidence	Pérols, FranceHQ checked Sep 5, 2026	11-50	20
	“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 5, 2026
15	Ého.LinkIndirect evidence	Marseille, FranceHQ checked Sep 5, 2026	11-50	16
	“ÉHO.LINK est une équipe de 25 personnes ancrée à Marseille.” Source: company website · checked Sep 5, 2026
16	DiateamIndirect evidence	Brest, FranceHQ checked Sep 5, 2026	11-50	16
	“Founded in 2002, on the French MoD needs, DIATEAM is a R&D company specializing in computer security.” Source: company website · checked Sep 5, 2026
17	Nuances TechnologiesIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	16
	“Basée à Paris, Nuances Technologies est une société française qui développe des solutions d’avant-garde dans le domaine de la sécurité et du contrôle des communications sans fil…” Source: company website · checked Sep 5, 2026
18	IntuityIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	15
	“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: company website · checked Sep 5, 2026
19	u.neatIndirect evidence	Paris-lyon-aix/marseille, FranceHQ checked Sep 5, 2026	11-50	15
	“Nous veillons sur la sécurité de votre Système d’Information.” Source: company website · checked Sep 5, 2026
20	DND AgencyIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	13
	“Are we legion?” Source: company website · checked Sep 5, 2026
21	AKYLIndirect evidence	Pantin, FranceHQ checked Sep 5, 2026	1-10	11
	“LA CYBERSÉCURITÉ, VERSION AKYL Une approche aussi pragmatique que passionnée.” Source: company website · checked Sep 5, 2026
22	Cyber-SsiIndirect evidence	Paris, FranceHQ checked Sep 5, 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 5, 2026
23	Highjack Offensive CybersecurityIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	1-10	10
	“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 5, 2026
24	HifieldIndirect evidence	Sèvres, FranceHQ checked Sep 5, 2026	11-50	9
	“Né de la fusion des sociétés NetXP, LiveXP, Provadys et MAJJ, Hifield est la holding des sociétés Almond, Amossys et Board of Cyber.” Source: company website · checked Sep 5, 2026
25	SIKURIndirect evidence	Valbonne, FranceHQ checked Sep 5, 2026	11-50	9
	“More than a technological solution, we are a strategic decision for organizations.” Source: company website · checked Sep 5, 2026

Showing 25 of 139 military cybersecurity companies based in France

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Military cybersecurity companies based in France at a glance

As of Sep 5, 2026

1-10Median size (employees)

ParisLargest hub · 44 HQs

114Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

2,874

31–60

146

61–90

90–180

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 military cybersecurity companies, 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 “military cybersecurity companies”. 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 military cybersecurity companies, 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, 3,034 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 5, 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.

Military cybersecurity companies by metro

Military cybersecurity companies in Paris44

Frequently asked

How many military cybersecurity companies are there based in France?

RevenueBase identified 139 military cybersecurity companies 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?

Orange Cyberdefense, headquartered in Paris, tops this list with the largest team on record.

Which city has the most military cybersecurity companies?

Paris leads with 44 headquartered companies, followed by Toulouse (4) and Lille (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 3,034 verified decision-maker contacts tracked across these 139 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 5, 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.