Company lists · Data refreshed September 2026

Top 25 IT infrastructure and security companies based in Paris, France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 369 companies tracked

RevenueBase identified 369 company matches for IT infrastructure and security companies associated with Paris, France as of September 2026 and tracks 7,491 professional contacts across them, including 3,304 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers company matches for IT infrastructure and security companies associated with Paris, France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

369Companies

7,491Contacts tracked

3,304Verified emails

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The 25 largest IT infrastructure and security companies based in Paris, France

Ranked by team size

Top 25 of 369 company matches for IT infrastructure and security companies based in Paris, France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Cyllene	Exact match	Paris, FranceHQ recorded Sep 27, 2026	201-500	279 contacts →
	Exact match “Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Norgay	Exact match	Paris, FranceHQ recorded Sep 27, 2026	201-500	167 contacts →
	Exact match “NORGAY IT services, la proximité au cœur de votre transformation digitale NORGAY IT Services est une entreprise de services numériques (ESN), implantée sur Brest, Nantes, Paris…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	ITEC	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	131 contacts →
	Exact match “ITEC est une Entreprise de Services Numériques fondée en 2015 qui accompagne les organisations et les institutions dans leur quotidien et leurs transformations IT.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Evabssi	Exact match	Paris, FranceHQ recorded Sep 27, 2026	201-500	117 contacts →
	Exact match “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Digitalcook	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	86 contacts →
	Exact match “DigitalCook #Weinspirechange Depuis 2016, DigitalCook accompagne les entreprises dans leurs projets de transformation digitale, infogérance, hardware & software, et cybesécurité.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Lutessa	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	83 contacts →
	Exact match “Allez, on se présente!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Deletec	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	77 contacts →
	Exact match “DELETEC Corporate, Société de Services en Ingénierie Informatique, aborde le monde des hautes technologies avec un esprit d'enthousiasme et de passion qui caractérise ses équipes…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Magellan Sécurité	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	75 contacts →
	Exact match “Magellan Sécurité, an entity of the Magellan Partners Group, offers integrated solutions to protect against internal threats and cyber attacks.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	AMD Blue	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	68 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	EXEO	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	67 contacts →
	Exact match “EXEO, founded in 2012, is a multi-specialist Managed Services Cloud Provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Tsplus Group	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	66 contacts →
	Exact match “As businesses of all kinds become digital, organizations depend on the ability to create new disruptive business models, new ways to engage employees and customers, and new ways…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Cyberlift	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	56 contacts →
	Exact match “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	CONIX	Exact match	Paris, FranceHQ recorded Sep 27, 2026	51-200	49 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Redopus	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	47 contacts →
	Exact match “Créé en 2017, REDOPUS est spécialisée en sécurité, réseaux des systèmes d'informations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Systemic	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	44 contacts →
	Exact match “Systemic, one of the first integrators of DELL Technologies in France, supports large companies in the study, recommendation, implementation and monitoring of their information…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	IDNA	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	42 contacts →
	Exact match “Cabinet de conseil à taille humaine spécialisé dans les infrastructures Datacenters, réseaux et sécurité.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Groupe Acmi	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	40 contacts →
	Exact match “Notre métier : Imaginer, fournir, installer, sécuriser, hé-berger et gérer vos infrastructures informatiques.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Setec IS	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	40 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Løvell	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	37 contacts →
	Exact match “Qui sommes-nous?” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Flexsi	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	36 contacts →
	Exact match “Piloter la performance numérique de votre entreprise.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Atlantis	Exact match	Paris, FranceHQ recorded Sep 27, 2026	n/a	36 contacts →
	Exact match “Atlantis is an IT consulting company based in Paris, France.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Sapiens Group	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	35 contacts →
	Exact match “Sapiens Group is an internet company based out of 34 rue de Liège, Paris, Île-de-France, France.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Kytl Security	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	35 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	ACG Cybersecurity	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	33 contacts →
	Exact match “ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	ENIX	Exact match	Paris, FranceHQ recorded Sep 27, 2026	11-50	33 contacts →
	Exact match “Founded in 2004, Enix is a French company specialized in Cloud, DevOps, and 24/7 IT operations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT infrastructure and security companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 369 IT infrastructure and security companies based in Paris, France

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IT infrastructure and security companies based in Paris, France at a glance

As of Sep 27, 2026

44.1%Verified-email coverage

20.3Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

195

11-50

138

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole France list rather than for Paris, so it is reported there. Company counts and contact totals on this page are exact for Paris, over 369 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Paris, France whose business descriptions match “IT infrastructure and security companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,304 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

IT infrastructure and security companies by metro in France

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT infrastructure and security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT infrastructure and security companies are there based in Paris, France?

RevenueBase identified 369 company matches for IT infrastructure and security companies associated with Paris, France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Cyllene tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in France has the most IT infrastructure and security companies?

Paris leads France with 369 company records, followed by Lyon (49) and Boulogne-Billancourt (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,304 professional contacts with verified work emails tracked across these 369 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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.