Company lists · Data refreshed September 2026

Top 25 Network security consulting companies based in Paris, France

Name: Network security consulting companies based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 149 companies tracked

RevenueBase identified 149 network security consulting companies headquartered in Paris, France as of September 2026 and tracks 2,214 professional contacts across them, including 632 with verified work emails and 47 with mobile numbers. Paris is the largest hub.

This list covers network security consulting companies headquartered in Paris, 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 13, 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 13, 2026 86% judged on-target in blind review

149Companies

2,214Contacts tracked

632Verified emails

47Mobile numbers

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The 25 largest network security consulting companies based in Paris, France

Ranked by team size

Top 25 of 149 network security consulting companies based in Paris, France, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to network 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	own.security	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	506 contacts →
	Indirect 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 13, 2026
2	Neverhack	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
3	Synacktiv	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	201-500	171 contacts →
	Partial evidence “Synacktiv is an offensive security company founded in 2012 by several security experts.” Source: RevenueBase Database · checked Sep 13, 2026
4	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	201-500	117 contacts →
	Partial evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 13, 2026
5	AMD Blue	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	68 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 13, 2026
6	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	56 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 13, 2026
7	CONIX	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
8	Redopus	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
9	IDNA	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
10	Setec IS	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	40 contacts →
	Indirect evidence “setec is est une filiale du Groupe setec, spécialisée dans le conseil et l’ingénierie dans le domaine des infrastructures IT, télécom, réseaux et cybersécurité.” Source: RevenueBase Database · checked Sep 13, 2026
11	Atlantis	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	n/a	36 contacts →
	Partial evidence “Atlantis is an IT consulting company based in Paris, France.” Source: RevenueBase Database · checked Sep 13, 2026
12	Kytl Security	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
13	ACG Cybersecurity	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	33 contacts →
	Indirect evidence “ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: RevenueBase Database · checked Sep 13, 2026
14	Randorisec	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	32 contacts →
	Partial evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 13, 2026
15	Systemis	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	29 contacts →
	Partial evidence “Created in 2009, Systemis is an international group (50 people, France, Luxemburg, UK) and covers three major areas - Architecture and Counselling in Security- IT Security…” Source: RevenueBase Database · checked Sep 13, 2026
16	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	25 contacts →
	Indirect evidence “Five Nines est née en 2019 d’un constat simple, celui d’un manque crucial de compétences et d’expérience dans la sécurisation de la transformation digitale des entreprises.” Source: RevenueBase Database · checked Sep 13, 2026
17	WLF	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Sep 13, 2026
18	Harmonie Technologie Site	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	21 contacts →
	Partial evidence “As the main independent provider of cybersecurity and risk management consulting and technical expertise, Harmonie Technologie partners with key accounts (mainly from CAC40 and…” Source: RevenueBase Database · checked Sep 13, 2026
19	Intuity	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	15 contacts →
	Indirect evidence “Nous aidons les entreprises à sécuriser leurs actifs, tels que leurs applications web et leurs systèmes d'information, tout en renforçant la sécurité globale des organisations.” Source: RevenueBase Database · checked Sep 13, 2026
20	Sine QUA NON Infogérance DE Proximité	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	14 contacts →
	Indirect evidence “Cybersécurité, prévention, protection, remédiation, mobilité, surveillance, assistance … Comment prendre les meilleures décisions et assurer cohérence et pérennité dans vos…” Source: RevenueBase Database · checked Sep 13, 2026
21	DND Agency	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	13 contacts →
	Indirect evidence “Are we legion?” Source: RevenueBase Database · checked Sep 13, 2026
22	STEEF	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	12 contacts →
	Indirect evidence “Cabinet de Conseils, Créatif et Authentique construit autour d’une communauté composée d’Experts en Cybersécurité.” Source: RevenueBase Database · checked Sep 13, 2026
23	Insyco	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	11 contacts →
	Indirect evidence “Insyco est une société de conseil en systèmes d'information indépendante, fondée à Paris.” Source: RevenueBase Database · checked Sep 13, 2026
24	Cybertic	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	10 contacts →
	Indirect evidence “Cyber attaque, pénétration, hameçonnage… Depuis 2010 et la multiplication des Cyber-attaques, la cyber sécurité n’est plus une option pour les DSI, sa maîtrise est devenu…” Source: RevenueBase Database · checked Sep 13, 2026
25	Duonyx Cybersecurity Consulting	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “Duonyx Cybersecurity Consulting est une filiale du groupe Duonyx, spécialisée dans les services d'intégration et de conseil en nouvelles technologies pour la gestion des…” Source: RevenueBase Database · checked Sep 13, 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: network 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 network security consulting companies.
Partial evidence: Its own public description names part of network 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 network 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 149 network security consulting companies based in Paris, France

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Network security consulting companies based in Paris, France at a glance

As of Sep 13, 2026

28.5%Verified-email coverage

2.1%Mobile-number coverage

14.9Average contacts per company

1-10Median size (employees)

96.6%Largest-city concentration · Paris

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

108

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

4860–30

13631–60

561–90

090–180

5180+

Company record updated

Median 72.0d

00–30

93831–60

92861–90

24290–180

106180+

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 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 Paris, 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.
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 network 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 network security consulting companies, and records with no verified work email. Companies headquartered outside Paris 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, 632 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 13, 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 in France

Network security consulting companies 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 network 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 network security consulting companies are there based in Paris, France?

RevenueBase identified 149 network security consulting companies headquartered in Paris, 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?

own.security, headquartered in Paris, 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 632 verified decision-maker contacts tracked across these 149 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 13, 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.