Company lists · Data refreshed September 2026

Top 25 Network security consulting companies based in France

Name: Network 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 5, 2026 541 companies tracked

RevenueBase identified 541 network security consulting companies headquartered in France as of September 2026 and tracks 5,997 professional contacts across them, including 1,860 with verified work emails and 134 with mobile numbers. Paris is the largest hub.

This list covers network 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 5, 2026 86% judged on-target in blind review

541Companies

5,997Contacts tracked

1,860Verified emails

134Mobile numbers

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The 25 largest network security consulting companies based in France

Ranked by team size

Top 25 of 541 network security consulting companies based in France, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names network security consulting 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	I-TracingIndirect evidence	Courbevoie, FranceHQ checked Sep 5, 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 5, 2026
2	own.securityIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	506
	“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: company website · checked Sep 5, 2026
3	NeverhackIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	1,001-5,000	382
	“NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: company website · checked Sep 5, 2026
4	SynacktivPartial evidence	Paris, FranceHQ checked Sep 5, 2026	201-500	171
	“Synacktiv is an offensive security company founded in 2012 by several security experts.” Source: company website · checked Sep 5, 2026
5	Services Network SecurityStrong evidence	Montpellier, FranceHQ checked Sep 5, 2026	201-500	144
	“Créée en Juin 2002, Services Network Security est spécialisée dans la sécurisation des passerelles internet et dans les interconnexions VPN.” Source: company website · checked Sep 5, 2026
6	EvabssiPartial evidence	Paris, FranceHQ checked Sep 5, 2026	201-500	117
	“EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: company website · checked Sep 5, 2026
7	IsitixIndirect evidence	FranceHQ checked Sep 5, 2026	n/a	83
	“Depuis 20 ans, Isitix accompagne vos projets informatiques et numériques.” Source: company website · checked Sep 5, 2026
8	CS In CybersecurityIndirect evidence	Le Plessis-robinson, FranceHQ checked Sep 5, 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 5, 2026
9	AduneoIndirect evidence	Malakoff, FranceHQ checked Sep 5, 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 5, 2026
10	AMD BlueIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	68
	“La société AMD BLUE est née de l’intention de son président, Michel Delouya, de fonder une ESN (anciennement SSII) dans laquelle la qualité et l’accompagnement assidus du service…” Source: company website · checked Sep 5, 2026
11	AlgosecureIndirect evidence	Villeurbanne, FranceHQ checked Sep 5, 2026	11-50	60
	“Société française fondée par une équipe spécialisée dans le domaine des réseaux et de la sécurité des systèmes d'information, AlgoSecure a pour ambition de vous accompagner dans…” Source: company website · checked Sep 5, 2026
12	Login SécuritéIndirect evidence	Saint-cloud, FranceHQ checked Sep 5, 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 5, 2026
13	CyberliftIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	51-200	56
	“Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: company website · checked Sep 5, 2026
14	NavigacomIndirect evidence	Puteaux, FranceHQ checked Sep 5, 2026	11-50	52
	“Navigacom, cabinet de conseil indépendant, expert dans les Infrastructures IT & Cybersécurité.” Source: company website · checked Sep 5, 2026
15	SysdreamIndirect evidence	Levallois-perret, FranceHQ checked Sep 5, 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 5, 2026
16	RedopusIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	47
	“Créé en 2017, REDOPUS est spécialisée en sécurité, réseaux des systèmes d'informations.” Source: company website · checked Sep 5, 2026
17	Dcit ConseilIndirect evidence	Sene, FranceHQ checked Sep 5, 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 5, 2026
18	digital.securityPartial evidence	Bezons, FranceHQ checked Sep 5, 2026	201-500	44
	“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 5, 2026
19	OrnisecIndirect evidence	Rennes, FranceHQ checked Sep 5, 2026	11-50	40
	“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 5, 2026
20	LøvellIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	37
	“Qui sommes-nous?” Source: company website · checked Sep 5, 2026
21	AtlantisPartial evidence	Paris, FranceHQ checked Sep 5, 2026	n/a	36
	“Atlantis is an IT consulting company based in Paris, France.” Source: company website · checked Sep 5, 2026
22	ExcubeIndirect evidence	Lyon, FranceHQ checked Sep 5, 2026	11-50	33
	“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 5, 2026
23	ACG CybersecurityIndirect evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	33
	“ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: company website · checked Sep 5, 2026
24	RandorisecPartial evidence	Paris, FranceHQ checked Sep 5, 2026	11-50	32
	“Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: company website · checked Sep 5, 2026
25	ACE ServiceIndirect evidence	Rouen, FranceHQ checked Sep 5, 2026	11-50	30
	“Fondée en 2001, ACE Service concentre son activité sur son savoir-faire : la sécurité des systèmes d'information.” Source: company website · checked Sep 5, 2026

Showing 25 of 541 network security consulting companies based in France

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Network security consulting companies based in France at a glance

As of Sep 5, 2026

1-10Median size (employees)

ParisLargest hub · 144 HQs

134Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

379

11-50

125

51-200

201-500

1,001-5,000

10001+

Verified emails by last verification

0–30

1,743

31–60

107

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 network security consulting 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 “network security consulting 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 network 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 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, 1,860 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 5, 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.

Network security consulting companies by metro

Network security consulting companies in Paris144

Frequently asked

How many network security consulting companies are there based in France?

RevenueBase identified 541 network 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?

I-Tracing, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most network security consulting companies?

Paris leads with 144 headquartered companies, followed by Lyon (18) and Toulouse (11).

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 1,860 verified decision-maker contacts tracked across these 541 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 5, 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.