Company lists · Data refreshed September 2026

Top 25 Secure software development companies based in France

Name: Secure software development companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 713 companies tracked

RevenueBase identified 713 secure software development companies headquartered in France as of September 2026 and tracks 11,079 professional contacts across them, including 4,541 with verified work emails and 225 with mobile numbers. Paris is the largest hub.

This list covers secure software development 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 6, 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 6, 2026 86% judged on-target in blind review

713Companies

11,079Contacts tracked

4,541Verified emails

225Mobile numbers

Explore all 713 companies → Free signup · no credit card · 500 free credits

The 25 largest secure software development companies based in France

Ranked by team size

Top 25 of 713 secure software development companies based in France, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names secure software development 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 CyberdefenseIndirect evidence	Nanterre, FranceHQ checked Sep 6, 2026	1,001-5,000	3,673
	“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: company website · checked Sep 6, 2026
2	I-TracingIndirect evidence	Courbevoie, FranceHQ checked Sep 6, 2026	1,001-5,000	639
	“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: company website · checked Sep 6, 2026
3	NeverhackIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	1,001-5,000	382
	“NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: company website · checked Sep 6, 2026
4	Devoteam Cyber TrustIndirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	10001+	338
	“Devoteam Cyber Trust is the cybersecurity specialist arm of the Devoteam Group.” Source: company website · checked Sep 6, 2026
5	OuidouIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	252
	“Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: company website · checked Sep 6, 2026
6	AvistoStrong evidence	Valbonne, FranceHQ checked Sep 6, 2026	201-500	226
	“The software development: your passion, our profession.” Source: company website · checked Sep 6, 2026
7	Stanley Security FrancePartial evidence	Ivry-sur-seine, FranceHQ checked Sep 6, 2026	1,001-5,000	191
	“STANLEY Security est devenu Securitas Technology en 2022.” Source: company website · checked Sep 6, 2026
8	EvabssiIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	117
	“EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: company website · checked Sep 6, 2026
9	QuarkslabIndirect evidence	Paris, FranceHQ checked Sep 6, 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 6, 2026
10	SekeraIndirect evidence	Saint-quentin-en-yvelines, FranceHQ checked Sep 6, 2026	51-200	88
	“Sekera Services est un cabinet de conseil homologué par la DGSSI comme prestataire d’audit de sécurité SI (PASSI) répondant aux exigences en termes de démarche et qualifications…” Source: company website · checked Sep 6, 2026
11	KNSIndirect evidence	Lyon, FranceHQ checked Sep 6, 2026	11-50	82
	“Fondée à Lyon en 2002, KNS est une Entreprise de Service du Numérique qui intervient à tous les niveaux de la sécurisation des Systèmes d'Information en France et à l'étranger.” Source: company website · checked Sep 6, 2026
12	CS In CybersecurityIndirect evidence	Le Plessis-robinson, FranceHQ checked Sep 6, 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 6, 2026
13	AduneoIndirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	51-200	73
	“Aduneo vous accompagne à chaque étape pour protéger vos identités, sécuriser vos données et simplifier votre quotidien.” Source: company website · checked Sep 6, 2026
14	OLIPSIndirect evidence	Arcueil, FranceHQ checked Sep 6, 2026	51-200	73
	“Créée en avril 2005 à Antony, dans les Hauts de Seine, Notre croissance s’effectue aussi bien dans les domaines de la Grande Distribution, du spectacle vivant ou des collectivités…” Source: company website · checked Sep 6, 2026
15	Login SécuritéIndirect evidence	Saint-cloud, FranceHQ checked Sep 6, 2026	51-200	59
	“LA SÉCURITÉ CRÉATRICE DE VALEUR POUR LES CLIENTS Login Sécurité accompagne les DSI dans la définition et la mise en œuvre de leur stratégie de Confiance Numérique.” Source: company website · checked Sep 6, 2026
16	CyberliftIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	56
	“Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: company website · checked Sep 6, 2026
17	ScassiPartial evidence	Paris / Toulouse / Madrid, FranceHQ checked Sep 6, 2026	51-200	53
	“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: company website · checked Sep 6, 2026
18	AISIIndirect evidence	Saint-mandé, FranceHQ checked Sep 6, 2026	51-200	52
	“Qui sommes-nous?” Source: company website · checked Sep 6, 2026
19	NavigacomIndirect evidence	Puteaux, FranceHQ checked Sep 6, 2026	11-50	52
	“Navigacom, cabinet de conseil indépendant, expert dans les Infrastructures IT & Cybersécurité.” Source: company website · checked Sep 6, 2026
20	SysdreamIndirect evidence	Levallois-perret, FranceHQ checked Sep 6, 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 6, 2026
21	IT SystemesIndirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	11-50	52
	“Votre logiciel métier devrait vous appartenir.” Source: company website · checked Sep 6, 2026
22	CONIXIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	49
	“Conix Technologies et Services est une ESN, filiale de Conix Services créée en 1997, dédiée à la réalisation et à la sécurisation du Système d’Information de l’entreprise étendue.” Source: company website · checked Sep 6, 2026
23	RedopusIndirect evidence	Paris, FranceHQ checked Sep 6, 2026	11-50	47
	“Créé en 2017, REDOPUS est spécialisée en sécurité, réseaux des systèmes d'informations.” Source: company website · checked Sep 6, 2026
24	Dcit ConseilIndirect evidence	Sene, FranceHQ checked Sep 6, 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 6, 2026
25	GroupefboIndirect evidence	La Roche-sur-yon, FranceHQ checked Sep 6, 2026	11-50	42
	“Le GroupeFBO est l'un des leaders du développement informatique en Vendée.” Source: company website · checked Sep 6, 2026

Showing 25 of 713 secure software development companies based in France

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Secure software development companies based in France at a glance

As of Sep 6, 2026

1-10Median size (employees)

ParisLargest hub · 207 HQs

225Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

485

11-50

178

51-200

201-500

1,001-5,000

10001+

Verified emails by last verification

0–30

4,257

31–60

256

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 secure software development 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 “secure software development 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 secure software development 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, 4,541 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 6, 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.

Secure software development companies by metro

Secure software development companies in Paris207

Frequently asked

How many secure software development companies are there based in France?

RevenueBase identified 713 secure software development 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 secure software development companies?

Paris leads with 207 headquartered companies, followed by Lyon (22) and Toulouse (14).

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 4,541 verified decision-maker contacts tracked across these 713 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 6, 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.