Company lists · Data refreshed September 2026

Top 25 Cybersecurity audit services based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 435 companies tracked

RevenueBase identified 435 cybersecurity audit services headquartered in France as of September 2026 and tracks 5,122 professional contacts across them, including 1,613 with verified work emails. Paris is the largest hub.

This list covers cybersecurity audit services 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 21, 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 21, 2026 86% judged on-target in blind review

435Companies

5,122Contacts tracked

1,613Verified emails

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The 25 largest cybersecurity audit services based in France

Ranked by team size

Top 25 of 435 cybersecurity audit services based in France, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity audit services: 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, FranceHQ checked Sep 21, 2026	1,001-5,000	639 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 21, 2026
2	own.security	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	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 21, 2026
3	Neverhack	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	1,001-5,000	382 contacts →
	Partial evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 21, 2026
4	ADNOV	Indirect evidence	Venelles, FranceHQ checked Sep 21, 2026	201-500	139 contacts →
	Indirect evidence “ADNOV, filiale du groupe ADSN, acteur de renommée française à l'ancrage national, développe depuis plus de 40 ans une expertise reconnue dans la cybersécurité et la protection des…” Source: RevenueBase Database · checked Sep 21, 2026
5	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	117 contacts →
	Partial evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 21, 2026
6	XMCO	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	111 contacts →
	Partial evidence “Our services : Penetration tests and Security Audits, Gap Analysis and PCI DSS Certification, CERT-XMCO (vulnerability watch, Cyber Survellance/Threat Intelligence, Forensics).” Source: RevenueBase Database · checked Sep 21, 2026
7	Egerie	Partial evidence	Toulon, FranceHQ checked Sep 21, 2026	51-200	105 contacts →
	Partial evidence “At Egerie, we believe cybersecurity shouldn't be a constraint, it should be a true driver of sustainable performance.” Source: RevenueBase Database · checked Sep 21, 2026
8	Sekera	Partial evidence	Saint-quentin-en-yvelines, FranceHQ checked Sep 21, 2026	51-200	88 contacts →
	Partial 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 21, 2026
9	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 21, 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 21, 2026
10	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	56 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 21, 2026
11	Sysdream	Indirect evidence	Levallois-perret, FranceHQ checked Sep 21, 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 21, 2026
12	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 21, 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 21, 2026
13	digital.security	Indirect evidence	Bezons, FranceHQ checked Sep 21, 2026	201-500	44 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
14	Adenis	Indirect evidence	Bagnolet, FranceHQ checked Sep 21, 2026	51-200	42 contacts →
	Indirect evidence “Les entreprises qui domineront leur marché dans les dix prochaines années auront toutes un point commun : un système d'information devenu un avantage stratégique.” Source: RevenueBase Database · checked Sep 21, 2026
15	By The WAY	Indirect evidence	Vendeville, FranceHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence “Services aux entreprises dans différents domaines des infrastructures informatique.” Source: RevenueBase Database · checked Sep 21, 2026
16	Ornisec	Indirect evidence	Rennes, FranceHQ checked Sep 21, 2026	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 21, 2026
17	ZIWIT	Indirect evidence	Montpellier, FranceHQ checked Sep 21, 2026	51-200	38 contacts →
	Indirect evidence “Looking for services & solutions to secure your organization and your web applications?” Source: RevenueBase Database · checked Sep 21, 2026
18	Løvell	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 21, 2026
19	Digitemis	Indirect evidence	Rezé, FranceHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Digitemis est expert dans le conseil en cybersécurité et protection des données personnelles.” Source: RevenueBase Database · checked Sep 21, 2026
20	Excube	Indirect evidence	Lyon, FranceHQ checked Sep 21, 2026	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 21, 2026
21	ACG Cybersecurity	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	33 contacts →
	Strong evidence “ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: RevenueBase Database · checked Sep 21, 2026
22	Randorisec	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	32 contacts →
	Strong evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 21, 2026
23	Cogiceo	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	32 contacts →
	Partial evidence “COGICEO is a company founded in 2012, specializing in IT security audits and penetration testing (pentest).” Source: RevenueBase Database · checked Sep 21, 2026
24	ACE Service	Indirect evidence	Rouen, FranceHQ checked Sep 21, 2026	11-50	30 contacts →
	Indirect evidence “Fondée en 2001, ACE Service concentre son activité sur son savoir-faire : la sécurité des systèmes d'information.” Source: RevenueBase Database · checked Sep 21, 2026
25	Extern IT	Partial evidence	Wambrechies, FranceHQ checked Sep 21, 2026	11-50	27 contacts →
	Partial evidence “Nos offres de service - Audit et Conseils informatiques (gouvernance, sécurité & infrastructure)- Pilotage et Gestion de Système d'informations (DSI à temps partagé.)-…” Source: RevenueBase Database · checked Sep 21, 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 audit services. 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 audit services.
Partial evidence: Its own public description names part of cybersecurity audit services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity audit services. 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 435 cybersecurity audit services based in France

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Cybersecurity audit services based in France at a glance

As of Sep 21, 2026

31.5%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

28.0%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

317

11-50

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 435 companies.

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 audit services, 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 audit services”. 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 audit services), 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 audit services, 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, 1,613 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 21, 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 audit services by metro

Cybersecurity audit services in Paris122

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 audit services, 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 audit services are there based in France?

RevenueBase identified 435 cybersecurity audit services 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 audit services?

Paris leads with 122 headquartered companies, followed by Lyon (14) and Lille (10).

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 1,613 verified decision-maker contacts tracked across these 435 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 21, 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.