Company lists · Data refreshed September 2026

Top 25 Software security consulting firms based in France

Name: Software security consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 493 companies tracked

RevenueBase identified 493 software security consulting firms headquartered in France as of September 2026 and tracks 6,667 professional contacts across them, including 2,726 with verified work emails and 143 with mobile numbers. Paris is the largest hub.

This list covers software security consulting firms 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

493Companies

6,667Contacts tracked

2,726Verified emails

143Mobile numbers

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The 25 largest software security consulting firms based in France

Ranked by team size

Top 25 of 493 software security consulting firms 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 software security consulting firms: 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	Airbus Protect	Indirect evidence	Blagnac, FranceHQ checked Sep 6, 2026	1,001-5,000	1,431 contacts →
	“Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: company website · checked Sep 6, 2026
2	SQUAD	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	803 contacts →
	“The growing threat of cyber risks, the expansion of cloud computing and the emergence of the DevOps movement are reshaping IT practices, enlighting the relevance of our vision for…” Source: company website · checked Sep 6, 2026
3	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 6, 2026	1,001-5,000	639 contacts →
	“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
4	Synacktiv	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	171 contacts →
	“Synacktiv is an offensive security company founded in 2012 by several security experts.” Source: company website · checked Sep 6, 2026
5	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	117 contacts →
	“EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: company website · checked Sep 6, 2026
6	Quarkslab	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	95 contacts →
	“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
7	Sekera	Indirect evidence	Saint-quentin-en-yvelines, FranceHQ checked Sep 6, 2026	51-200	88 contacts →
	“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
8	Isitix	Indirect evidence	FranceHQ checked Sep 6, 2026	n/a	83 contacts →
	“Depuis 20 ans, Isitix accompagne vos projets informatiques et numériques.” Source: company website · checked Sep 6, 2026
9	KNS	Indirect evidence	Lyon, FranceHQ checked Sep 6, 2026	11-50	82 contacts →
	“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
10	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 6, 2026	51-200	75 contacts →
	“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
11	Aduneo	Indirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	51-200	73 contacts →
	“Aduneo vous accompagne à chaque étape pour protéger vos identités, sécuriser vos données et simplifier votre quotidien.” Source: company website · checked Sep 6, 2026
12	LEXFO	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	66 contacts →
	“LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.” Source: company website · checked Sep 6, 2026
13	Login Sécurité	Indirect evidence	Saint-cloud, FranceHQ checked Sep 6, 2026	51-200	59 contacts →
	“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
14	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	56 contacts →
	“Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: company website · checked Sep 6, 2026
15	Scassi	Partial evidence	Paris / Toulouse / Madrid, FranceHQ checked Sep 6, 2026	51-200	53 contacts →
	“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
16	CONIX	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	49 contacts →
	“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
17	Redopus	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	11-50	47 contacts →
	“Créé en 2017, REDOPUS est spécialisée en sécurité, réseaux des systèmes d'informations.” Source: company website · checked Sep 6, 2026
18	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 6, 2026	n/a	47 contacts →
	“DCIT Conseil, société de services de consultation spécialisée dans la cybersécurité et les technologies de l'information.” Source: company website · checked Sep 6, 2026
19	digital.security	Partial evidence	Bezons, FranceHQ checked Sep 6, 2026	201-500	44 contacts →
	“Founded in 2015 by a group of IT security experts with the support of the Econocom Group, digital.security (~ 230 experts) aims to offer companies and government organisations…” Source: company website · checked Sep 6, 2026
20	Ornisec	Indirect evidence	Rennes, FranceHQ checked Sep 6, 2026	11-50	40 contacts →
	“ORNISEC est un cabinet d’expertise à la pointe de la cybersécurité, qualifié PASSI RGS, PACS et PASSI LPM par l'ANSSI.” Source: company website · checked Sep 6, 2026
21	Løvell	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	11-50	37 contacts →
	“Qui sommes-nous?” Source: company website · checked Sep 6, 2026
22	Digitemis	Indirect evidence	Rezé, FranceHQ checked Sep 6, 2026	11-50	37 contacts →
	“Digitemis est expert dans le conseil en cybersécurité et protection des données personnelles.” Source: company website · checked Sep 6, 2026
23	Atlantis	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	n/a	36 contacts →
	“Atlantis is an IT consulting company based in Paris, France.” Source: company website · checked Sep 6, 2026
24	Excube	Indirect evidence	Lyon, FranceHQ checked Sep 6, 2026	11-50	33 contacts →
	“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: company website · checked Sep 6, 2026
25	ACG Cybersecurity	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	11-50	33 contacts →
	“ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: company website · 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: software security consulting firms. 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 software security consulting firms.
Partial evidence: Its own public description names part of software security consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software security consulting firms. 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 493 software security consulting firms based in France

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Software security consulting firms based in France at a glance

As of Sep 6, 2026

40.9%Verified-email coverage

2.1%Mobile-number coverage

13.5Average contacts per company

1-10Median size (employees)

29.2%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

350

11-50

110

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

2,5630–30

15131–60

261–90

390–180

7180+

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 software security consulting firms, 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 “software security consulting firms”. 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 software security consulting firms), 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 software security consulting firms, 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, 2,726 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.

Software security consulting firms by metro

Software security consulting firms in Paris144

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 software security consulting firms, 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 software security consulting firms are there based in France?

RevenueBase identified 493 software security consulting firms 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?

Airbus Protect, headquartered in Blagnac, tops this list with the largest team on record.

Which city has the most software security consulting firms?

Paris leads with 144 headquartered companies, followed by Lyon (21) 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 2,726 verified decision-maker contacts tracked across these 493 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.