Company lists · Data refreshed September 2026

Top 25 Defense technology consulting firms based in France

Name: Defense technology consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 149 companies tracked

RevenueBase identified 149 defense technology consulting firms headquartered in France as of September 2026 and tracks 9,597 professional contacts across them, including 682 with verified work emails. Paris is the largest hub.

This list covers defense technology consulting firms 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

149Companies

9,597Contacts tracked

682Verified emails

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The 25 largest defense technology consulting firms based in France

Ranked by team size

Top 25 of 149 defense technology consulting firms 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 defense technology consulting firms: 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	LGM	Indirect evidence	Vélizy-villacoublay, FranceHQ checked Sep 28, 2026	1,001-5,000	1,200 contacts →
	Indirect evidence “Avec plus de 30 ans d’aventure à nos côtés, LGM fait bien plus qu’accompagner les grands acteurs de l’industrie, de la Défense et des infrastructures : nous sommes…” Source: RevenueBase Database · checked Sep 28, 2026
2	Viveris	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 28, 2026	1,001-5,000	833 contacts →
	Partial evidence “Viveris is a consulting and engineering company with two main activities - IT consulting.” Source: RevenueBase Database · checked Sep 28, 2026
3	Alcadia Entreprises	Partial evidence	Lyon, FranceHQ checked Sep 28, 2026	51-200	166 contacts →
	Partial evidence “Alcadia est une entreprise de conseil en ingénierie spécialisée dans les domaines technologiques à forte valeur ajoutée.” Source: RevenueBase Database · checked Sep 28, 2026
4	Atermes	Indirect evidence	Montigny Le Bretonneux, FranceHQ checked Sep 28, 2026	51-200	82 contacts →
	Indirect evidence “Applications Techniques Etudes et Realisations Mecaniques Electroniques Systèmes Some names require no explanation.” Source: RevenueBase Database · checked Sep 28, 2026
5	Dcit Conseil	Partial evidence	Sene, FranceHQ checked Sep 28, 2026	n/a	47 contacts →
	Partial 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
6	Fenyx Consult	Partial evidence	Valbonne Sophia Antipolis, FranceHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial evidence “La société FENYX Consult est une jeune société d’ingénierie et de conseil en nouvelles technologies.” Source: RevenueBase Database · checked Sep 28, 2026
7	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
8	Cerebris	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “Cerebris est né d’un constat résultant de plusieurs années dans le monde du consulting : les sociétés de service vendent de la matière grise, mais n’en produisent pas.” Source: RevenueBase Database · checked Sep 28, 2026
9	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
10	Thelesys	Indirect evidence	Lyon, FranceHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Thelesys est une société de conseil en IT, Ingénierie et Stratégie, reposant sur les synergies de ses équipes, afin d’accompagner ses clients.” Source: RevenueBase Database · checked Sep 28, 2026
11	6hat	Indirect evidence	Villeneuve D'ascq, FranceHQ checked Sep 28, 2026	1-10	15 contacts →
	Indirect evidence “6HAT, société créée en 2012, est une société de service en ingénierie informatique spécialisée en réseaux et sécurité.” Source: RevenueBase Database · checked Sep 28, 2026
12	E-Conex	Partial evidence	Serris, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “E-CONEX est un bureau d’études et de conseils spécialisé dans les domaines de la Sûreté/Sécurité, des Technologies de l’Information et de l’Énergie.” Source: RevenueBase Database · checked Sep 28, 2026
13	Ventura Associates	Partial evidence	Lisieux, FranceHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Ventura Associates is a consulting company.” Source: RevenueBase Database · checked Sep 28, 2026
14	Noemi Conseil	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 2026	51-200	12 contacts →
	Indirect evidence “Conseil et Ingénierie des Systèmes d'Information.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cogisys	Partial evidence	Pertuis, FranceHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Depuis sa création en 1989, COGISYS SA a réuni une équipe d’experts de haut niveau animés par la passion des nouvelles technologies, le goût du travail en commun et une forte…” Source: RevenueBase Database · checked Sep 28, 2026
16	Cyberspector	Partial evidence	Paris & Cotonou, FranceHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “CyberSpector SAS is an innovative consulting firm specializing in cybersecurity, domain name management, Internet security, as well as systems and digital project engineering.” Source: RevenueBase Database · checked Sep 28, 2026
17	Duonyx Cybersecurity Consulting	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong 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 28, 2026
18	Ironie	Indirect evidence	Nantes, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “You are looking for skills for your security, systems and network projects.” Source: RevenueBase Database · checked Sep 28, 2026
19	Internet Of Trust	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Founded in February 2014, Internet of Trust is an independent security consulting company based in Paris and in Marseille area.” Source: RevenueBase Database · checked Sep 28, 2026
20	Keep Consulting Groupe Rainbow Partners	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Pure-player du conseil en cybersécurité, gestion des risques IT et infrastructures, notre force se résume par la flexibilité et l’autonomie de notre structure au sein d’un groupe…” Source: RevenueBase Database · checked Sep 28, 2026
21	Gen&sis	Partial evidence	Puteaux, FranceHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “GEN & SIS, a consulting company dedicated to Cybersecurity, supports you in securing your information system through its services” Source: RevenueBase Database · checked Sep 28, 2026
22	Solarisq	Indirect evidence	Sautron, FranceHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Cabinet de Conseil et Ingénierie en Sûreté Diagnostics de sûreté - Formations - Assistance à maîtrise d'ouvrage - Plan de sûreté” Source: RevenueBase Database · checked Sep 28, 2026
23	Leviam	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Leviam est un cabinet de conseil spécialisé dans la cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
24	Defenso	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Defenso est un cabinet de conseil indépendant spécialisé en ingénierie de Cyberdéfense.” Source: RevenueBase Database · checked Sep 28, 2026
25	Straad.A	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Membre de #NUMEUM et du #CyberCercle, STRAAD.A, structure de conseil et d'expertise en sécurité globale, se positionne comme un partenaire de l'anticipation et de la maitrise des…” 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: defense technology consulting firms. 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 defense technology consulting firms.
Partial evidence: Its own public description names part of defense technology consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense technology consulting firms. 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 defense technology consulting firms based in France

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Defense technology consulting firms based in France at a glance

As of Sep 28, 2026

7.1%Verified-email coverage

64.4Average contacts per company

1-10Median size (employees)

34.9%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 149 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 defense technology consulting firms, 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 “defense technology consulting firms”. 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 defense technology consulting firms), 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 defense technology consulting firms, 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, 682 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.

Defense technology consulting firms by metro

Defense technology consulting firms in Paris52

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 defense technology consulting firms, 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 defense technology consulting firms are there based in France?

RevenueBase identified 149 defense technology consulting firms 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?

LGM, headquartered in Velizy-Villacoublay, tops this list with the largest team on record.

Which city has the most defense technology consulting firms?

Paris leads with 52 headquartered companies, followed by Lyon (6) and Toulouse (5).

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 682 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 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.