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, its RevenueBase Smart Search rating, 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 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 6, 2026 86% judged on-target in blind review

713Companies

11,079Contacts tracked

4,541Verified emails

225Mobile numbers

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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. RevenueBase Smart Search rates how each company's information relates to secure software development companies: 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	Orange Cyberdefense	Indirect evidence	Nanterre, FranceHQ checked Sep 6, 2026	1,001-5,000	3,673 contacts →
	Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 6, 2026
2	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 6, 2026	1,001-5,000	639 contacts →
	Indirect 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 6, 2026
3	Neverhack	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	1,001-5,000	382 contacts →
	Indirect evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 6, 2026
4	Devoteam Cyber Trust	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	10001+	338 contacts →
	Indirect evidence “Devoteam Cyber Trust is the cybersecurity specialist arm of the Devoteam Group.” Source: RevenueBase Database · checked Sep 6, 2026
5	Ouidou	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	252 contacts →
	Indirect evidence “Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: RevenueBase Database · checked Sep 6, 2026
6	Avisto	Strong evidence	Valbonne, FranceHQ checked Sep 6, 2026	201-500	226 contacts →
	Strong evidence “The software development: your passion, our profession.” Source: RevenueBase Database · checked Sep 6, 2026
7	Stanley Security France	Partial evidence	Ivry-sur-seine, FranceHQ checked Sep 6, 2026	1,001-5,000	191 contacts →
	Partial evidence “STANLEY Security est devenu Securitas Technology en 2022.” Source: RevenueBase Database · checked Sep 6, 2026
8	Evabssi	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	117 contacts →
	Indirect evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 6, 2026
9	Quarkslab	Indirect evidence	Paris, FranceHQ checked Sep 6, 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 6, 2026
10	Sekera	Indirect evidence	Saint-quentin-en-yvelines, FranceHQ checked Sep 6, 2026	51-200	88 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
11	KNS	Indirect evidence	Lyon, FranceHQ checked Sep 6, 2026	11-50	82 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
12	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 6, 2026	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 6, 2026
13	Aduneo	Indirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	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 6, 2026
14	OLIPS	Indirect evidence	Arcueil, FranceHQ checked Sep 6, 2026	51-200	73 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
15	Login Sécurité	Indirect evidence	Saint-cloud, FranceHQ checked Sep 6, 2026	51-200	59 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
16	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	56 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 6, 2026
17	Scassi	Partial evidence	Paris / Toulouse / Madrid, FranceHQ checked Sep 6, 2026	51-200	53 contacts →
	Partial 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 6, 2026
18	AISI	Indirect evidence	Saint-mandé, FranceHQ checked Sep 6, 2026	51-200	52 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 6, 2026
19	Navigacom	Indirect evidence	Puteaux, FranceHQ checked Sep 6, 2026	11-50	52 contacts →
	Indirect evidence “Navigacom, cabinet de conseil indépendant, expert dans les Infrastructures IT & Cybersécurité.” Source: RevenueBase Database · checked Sep 6, 2026
20	Sysdream	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	51-200	52 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
21	IT Systemes	Indirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	11-50	52 contacts →
	Indirect evidence “Votre logiciel métier devrait vous appartenir.” Source: RevenueBase Database · checked Sep 6, 2026
22	CONIX	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	49 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
23	Redopus	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	11-50	47 contacts →
	Indirect evidence “Créé en 2017, REDOPUS est spécialisée en sécurité, réseaux des systèmes d'informations.” Source: RevenueBase Database · checked Sep 6, 2026
24	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 6, 2026	n/a	47 contacts →
	Indirect evidence “DCIT Conseil, société de services de consultation spécialisée dans la cybersécurité et les technologies de l'information.” Source: RevenueBase Database · checked Sep 6, 2026
25	Groupefbo	Indirect evidence	La Roche-sur-yon, FranceHQ checked Sep 6, 2026	11-50	42 contacts →
	Indirect evidence “Le GroupeFBO est l'un des leaders du développement informatique en Vendée.” Source: RevenueBase Database · checked Sep 6, 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: secure software development companies. 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 secure software development companies.
Partial evidence: Its own public description names part of secure software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name secure software development companies. 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 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

41.0%Verified-email coverage

2.0%Mobile-number coverage

15.5Average contacts per company

1-10Median size (employees)

29.0%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

485

11-50

178

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4,2570–30

25631–60

361–90

390–180

22180+

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 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 “secure software development companies”. 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 secure software development companies), 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 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 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, 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

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 secure software development companies, 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 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 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.