Company lists · Data refreshed September 2026

Top 25 Data center security consulting companies based in France

Name: Data center security consulting companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 532 companies tracked

RevenueBase identified 532 data center security consulting companies headquartered in France as of September 2026 and tracks 7,802 professional contacts across them, including 2,023 with verified work emails. Paris is the largest hub.

This list covers data center security consulting 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 28, 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 28, 2026 86% judged on-target in blind review

532Companies

7,802Contacts tracked

2,023Verified emails

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The 25 largest data center security consulting companies based in France

Ranked by team size

Top 25 of 532 data center security consulting companies based in France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to data center security consulting 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	Onet Sécurité	Indirect evidence	Marseille, FranceHQ checked Sep 28, 2026	10001+	1,007 contacts →
	Indirect evidence “La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…” Source: RevenueBase Database · checked Sep 28, 2026
2	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 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 28, 2026
3	Byblos Group	Indirect evidence	Lissieu, FranceHQ checked Sep 28, 2026	1,001-5,000	538 contacts →
	Indirect evidence “Byblos Group est un groupe indépendant spécialisé dans la protection des personnes, des biens et des données, avec une approche sur mesure, fondée sur l’excellence opérationnelle…” Source: RevenueBase Database · checked Sep 28, 2026
4	Neverhack	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
5	APL Data Center	Strong evidence	Montrouge, FranceHQ checked Sep 28, 2026	201-500	231 contacts →
	Strong evidence “Founded in 1983, APL is a Group specialised in the consultancy, engineering, construction and operation of data centers.” Source: RevenueBase Database · checked Sep 28, 2026
6	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	117 contacts →
	Partial evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 28, 2026
7	XMCO	Partial evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
8	Novadis	Indirect evidence	Levallois Perret, FranceHQ checked Sep 28, 2026	11-50	79 contacts →
	Indirect evidence “Fort de 10 années d’expérience et d’innovation dans le domaine de la sûreté, Novadis vous accompagne dans l’élaboration de solutions convergentes et interopérables.” Source: RevenueBase Database · checked Sep 28, 2026
9	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 28, 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 28, 2026
10	Aduneo	Indirect evidence	Malakoff, FranceHQ checked Sep 28, 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 28, 2026
11	Login Sécurité	Indirect evidence	Saint-cloud, FranceHQ checked Sep 28, 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 28, 2026
12	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	56 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
13	Navigacom	Indirect evidence	Puteaux, FranceHQ checked Sep 28, 2026	11-50	52 contacts →
	Indirect evidence “Navigacom, cabinet de conseil indépendant, expert dans les Infrastructures IT & Cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
14	Stephya	Partial evidence	Montmorency, FranceHQ checked Sep 28, 2026	51-200	47 contacts →
	Partial evidence “STEPHYA est centre de services en DATACENTER, présent en France.” Source: RevenueBase Database · checked Sep 28, 2026
15	Redopus	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
16	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 28, 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 28, 2026
17	IDNA	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “Cabinet de conseil à taille humaine spécialisé dans les infrastructures Datacenters, réseaux et sécurité.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ornisec	Indirect evidence	Rennes, FranceHQ checked Sep 28, 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 28, 2026
19	Løvell	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 28, 2026
20	Digitemis	Indirect evidence	Rezé, FranceHQ checked Sep 28, 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 28, 2026
21	Critical Building	Strong evidence	Fontenay-aux-roses, FranceHQ checked Sep 28, 2026	11-50	36 contacts →
	Strong evidence “CRITICAL BUILDING is an engineering company specialized in consulting, studies, audit, design, construction and commissioning of data centers.” Source: RevenueBase Database · checked Sep 28, 2026
22	Ipsip Group	Strong evidence	Vendargues, FranceHQ checked Sep 28, 2026	51-200	36 contacts →
	Strong evidence “IPSIP offers modular data center solutions that meet energy and security constraints IPSIP is also the added value service, we propose a global offer including + Products…” Source: RevenueBase Database · checked Sep 28, 2026
23	Atlantis	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	n/a	36 contacts →
	Partial evidence “Atlantis is an IT consulting company based in Paris, France.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kytl Security	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	35 contacts →
	Indirect evidence “KYTL \| Spécialiste de la protection des données et des environnements critiques; Fondée par des experts en cybersécurité cumulant plus de 15 ans d’expérience, KYTL accompagne les…” Source: RevenueBase Database · checked Sep 28, 2026
25	Excube	Indirect evidence	Lyon, FranceHQ checked Sep 28, 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 28, 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: data center security consulting 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 data center security consulting companies.
Partial evidence: Its own public description names part of data center security consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data center security consulting 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 532 data center security consulting companies based in France

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Data center security consulting companies based in France at a glance

As of Sep 28, 2026

25.9%Verified-email coverage

14.7Average contacts per company

1-10Median size (employees)

26.3%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

362

11-50

129

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 532 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 data center security consulting 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 “data center security consulting 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 data center security consulting 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 data center security consulting 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, 2,023 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 28, 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.

Data center security consulting companies by metro

Data center security consulting companies in Paris140

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 data center security consulting 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 data center security consulting companies are there based in France?

RevenueBase identified 532 data center security consulting 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?

Onet Sécurité, headquartered in France, tops this list with the largest team on record.

Which city has the most data center security consulting companies?

Paris leads with 140 headquartered companies, followed by Lyon (16) and Boulogne-Billancourt (9).

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 2,023 verified decision-maker contacts tracked across these 532 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 28, 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.