Company lists · Data refreshed September 2026
Top 25 Information security consulting firms based in France
RevenueBase identified 1,257 information security consulting firms headquartered in France as of September 2026 and tracks 15,783 professional contacts across them, including 4,468 with verified work emails and 346 with mobile numbers. Paris is the largest hub.
This list covers information security 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 25 largest information security consulting firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,429 | ||||
“Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 643 | ||||
“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 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 529 | ||||
“Byblos Group est un groupe indépendant spécialisé dans la protection des personnes, des biens et des données, avec une approche sur mesure, fondée sur l’excellence opérationnelle…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 369 | ||||
“Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 342 | ||||
“Devoteam Cyber Trust is the cybersecurity specialist arm of the Devoteam Group.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 252 | ||||
“Formind est un leader français indépendant, expert en cybersécurité.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 247 | ||||
“Intrinsec is focused on Information Security.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 191 | ||||
“STANLEY Security est devenu Securitas Technology en 2022.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 149 | ||||
“STORDATA est spécialisée dans le conseil, l’architecture, la mise en œuvre, l’administration et le MCO d’infrastructures de sécurisation et de gestion des données.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 139 | ||||
“ADNOV, filiale du groupe ADSN, acteur de renommée française à l'ancrage national, développe depuis plus de 40 ans une expertise reconnue dans la cybersécurité et la protection des…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 126 | ||||
“Since January 2007, ITrust has been offering cybersecurity solutions and expertise in 6 different countries on the European market.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 112 | ||||
“Our services : Penetration tests and Security Audits, Gap Analysis and PCI DSS Certification, CERT-XMCO (vulnerability watch, Cyber Survellance/Threat Intelligence, Forensics).” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 110 | ||||
“At Egerie, we believe cybersecurity shouldn't be a constraint, it should be a true driver of sustainable performance.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 86 | ||||
“Sekera Services est un cabinet de conseil homologué par la DGSSI comme prestataire d’audit de sécurité SI (PASSI) répondant aux exigences en termes de démarche et qualifications…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 83 | ||||
“Depuis 20 ans, Isitix accompagne vos projets informatiques et numériques.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 82 | ||||
“Fondée à Lyon en 2002, KNS est une Entreprise de Service du Numérique qui intervient à tous les niveaux de la sécurisation des Systèmes d'Information en France et à l'étranger.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | NovadisIndirect evidence | 79 | |||
“Fort de 10 années d’expérience et d’innovation dans le domaine de la sûreté, Novadis vous accompagne dans l’élaboration de solutions convergentes et interopérables.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 76 | ||||
“Magellan Sécurité, an entity of the Magellan Partners Group, offers integrated solutions to protect against internal threats and cyber attacks.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 73 | ||||
“Aduneo vous accompagne à chaque étape pour protéger vos identités, sécuriser vos données et simplifier votre quotidien.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 65 | ||||
“LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 60 | ||||
“Les WAKERS sont des consultant·e·s spécialisé·s dans la sécurité et l’adoption des solutions Cloud au service de ses clients.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 60 | ||||
“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 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 60 | ||||
“FOKUS, où l’Humain et la Technologie se rencontrent.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,257 information security consulting firms based in France
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,468 reachable decision-makers.
Free signup · no credit card
Information security consulting firms based in France at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 information security consulting firms, 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 “information security consulting firms”. 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 information security 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 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, 4,468 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 3, 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.
Information security consulting firms by metro
- Information security consulting firms in Paris342
- Information security consulting firms in Lyon45
Frequently asked
How many information security consulting firms are there based in France?
RevenueBase identified 1,257 information security 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?
Airbus Protect, headquartered in Blagnac, tops this list with the largest team on record.
Which city has the most information security consulting firms?
Paris leads with 342 headquartered companies, followed by Lyon (45) and Toulouse (21).
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 4,468 verified decision-maker contacts tracked across these 1,257 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 3, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,257 information security consulting firms based in France. Start with a free account, no credit card.
Get the full listRelated lists
Information security consulting firms by geography
- Information security consulting firms based in the United States
- Information security consulting firms based in the United Kingdom
- Information security consulting firms based in Brazil
- Information security consulting firms based in Germany
- Information security consulting firms based in Canada
- Information security consulting firms based in Australia
- Information security consulting firms based in the Netherlands
- Information security consulting firms based in Spain
- Information security consulting firms based in Italy
- Information security consulting firms based in Mexico
- Information security consulting firms based in Switzerland
- Information security consulting firms based in South Africa
Browse the directory
Browse: Companies home · All France lists · All Information security consulting firms lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Information security consulting firms based in the United States
- Information security consulting firms based in the United Kingdom
- Information security consulting firms based in Brazil
- Information security consulting firms based in Germany
- Information security consulting firms based in Canada
- Information security consulting firms based in Australia