Company lists · Data refreshed September 2026

Top 25 Infrastructure security consultants based in Paris, France

Name: Infrastructure security consultants based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 140 companies tracked

RevenueBase identified 140 infrastructure security consultants headquartered in Paris, France as of September 2026 and tracks 2,677 professional contacts across them, including 704 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers infrastructure security consultants 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 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

140Companies

2,677Contacts tracked

704Verified emails

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The 25 largest infrastructure security consultants based in Paris, France

Ranked by team size

Top 25 of 140 infrastructure security consultants based in Paris, France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure security consultants: 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	Synetis	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	359 contacts →
	Strong evidence “Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Source: RevenueBase Database · checked Sep 28, 2026
2	Cyllene	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	279 contacts →
	Indirect evidence “Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Source: RevenueBase Database · checked Sep 28, 2026
3	Evabssi	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	117 contacts →
	Indirect evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 28, 2026
4	AMD Blue	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
5	CONIX	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
6	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
7	IDNA	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	42 contacts →
	Partial evidence “Cabinet de conseil à taille humaine spécialisé dans les infrastructures Datacenters, réseaux et sécurité.” Source: RevenueBase Database · checked Sep 28, 2026
8	Setec IS	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial 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 28, 2026
9	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
10	Atlantis	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	n/a	36 contacts →
	Indirect evidence “Atlantis is an IT consulting company based in Paris, France.” Source: RevenueBase Database · checked Sep 28, 2026
11	ACG Cybersecurity	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
12	Systemis	Partial evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
13	SPOCC	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “SPOCC "Single Point of Contact & Competency "est un cabinet français de conseil en systèmes d’information, basé au cœur de Paris.” Source: RevenueBase Database · checked Sep 28, 2026
14	WLF	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Sep 28, 2026
15	Harmonie Technologie Site	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect 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 28, 2026
16	Cronos Conseil	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “CRONOS CONSEIL est un cabinet de conseil et d’ingénierie dans les domaines de la sûreté urbaine, de la prévention situationnelle et des secteurs d’activités d’importance vitale.” Source: RevenueBase Database · checked Sep 28, 2026
17	Marte Conseil	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Cabinet d’expertise technique à même de réaliser des prestations de conseil ainsi que la mise en œuvre de ses propres recommandations, Marte intervient au sein des DSI de nombreux…” Source: RevenueBase Database · checked Sep 28, 2026
18	Sine QUA NON Infogérance DE Proximité	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
19	AVTIS	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “AVTIS is an IT consulting, engineering and global integration company in infrastructure solutions.” Source: RevenueBase Database · checked Sep 28, 2026
20	Gemini Consulting	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	14 contacts →
	Indirect evidence “Gemini est une ESN (Entreprise de Services du Numérique) basée sur Paris.” Source: RevenueBase Database · checked Sep 28, 2026
21	Saycurit	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “SAYCURIT est une société d’intégration spécialisée dans le domaine de la sécurité.” Source: RevenueBase Database · checked Sep 28, 2026
22	Moka Works	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Moka Works est spécialisée en cybersécurité et gestion d'infrastructures IT, offrant des solutions techniques avancées adaptées aux besoins de chaque entreprise.” Source: RevenueBase Database · checked Sep 28, 2026
23	DND Agency	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Are we legion?” Source: RevenueBase Database · checked Sep 28, 2026
24	Insyco	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
25	Keltio	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Des experts DevSecOps pour vous accompagner à définir, construire, et améliorer votre infrastructure Chez Keltio, nous sommes une équipe spécialisée dans le déploiement et gestion…” 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: infrastructure security consultants. 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 infrastructure security consultants.
Partial evidence: Its own public description names part of infrastructure security consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure security consultants. 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 140 infrastructure security consultants based in Paris, France

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Infrastructure security consultants based in Paris, France at a glance

As of Sep 28, 2026

26.3%Verified-email coverage

19.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 140 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 infrastructure security consultants, 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 “infrastructure security consultants”. 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 infrastructure security consultants), 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 infrastructure security consultants, 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, 704 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.

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 infrastructure security consultants, 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 infrastructure security consultants are there based in Paris, France?

RevenueBase identified 140 infrastructure security consultants 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?

Synetis, headquartered in Paris, tops this list with the largest team on record.

Which city in France has the most infrastructure security consultants?

Paris leads France with 140 headquartered companies, followed by Lyon (21) and Boulogne-Billancourt (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 704 verified decision-maker contacts tracked across these 140 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.