Company lists · Data refreshed September 2026

Top 25 Iso 27001 information security consultants based in Paris, France

Name: Iso 27001 information 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 106 companies tracked

RevenueBase identified 106 iso 27001 information security consultants headquartered in Paris, France as of September 2026 and tracks 1,155 professional contacts across them, including 345 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers iso 27001 information 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

106Companies

1,155Contacts tracked

345Verified emails

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The 25 largest iso 27001 information security consultants based in Paris, France

Ranked by team size

Top 25 of 106 iso 27001 information 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 iso 27001 information 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	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
3	XMCO	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	111 contacts →
	Partial evidence “Our services : Penetration tests and Security Audits, Gap Analysis and PCI DSS Certification, CERT-XMCO (vulnerability watch, Cyber Survellance/Threat Intelligence, Forensics).” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	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
6	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
7	DBM Partners	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	30 contacts →
	Indirect evidence “Cabinet de conseil indépendant à taille humaine, nous aidons nos clients à maitriser leurs risques numériques sur les domaines : • Cybersécurité : prévenir, détecter et remédier…” Source: RevenueBase Database · checked Sep 28, 2026
8	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
9	Resiliant	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Cabinet d'expertise en CYBERSECURITE tourné vers l'avenir CONSULTING La gouvernance et la gestion des risques sont les bases de la sécurité de l’information au sein d’une…” Source: RevenueBase Database · checked Sep 28, 2026
10	Insyco	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Insyco est une société de conseil en systèmes d'information indépendante, fondée à Paris.” Source: RevenueBase Database · checked Sep 28, 2026
11	Securitrust	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	9 contacts →
	Strong evidence “Fondée sur une expertise en sécurité des systèmes d’informations, SecuriTrust offre aux entreprises et aux administrations des prestations d’audits et de conseils avancés ainsi…” Source: RevenueBase Database · checked Sep 28, 2026
12	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
13	Datakori	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Datakori est un cabinet international situé à Paris ainsi qu‘à Abidjan et qui intervient sur la cybersécurité et toute la chaîne de valeur de la data.” Source: RevenueBase Database · checked Sep 28, 2026
14	Blackbart	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “BlackBart est un cabinet de conseil en cybersécurité accompagnant les organisations publiques et privées dans la sécurisation de leurs environnements numériques et la maîtrise de…” Source: RevenueBase Database · checked Sep 28, 2026
15	Reciproc-It	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	7 contacts →
	Strong evidence “Reciproc-it is an Information Security System Consulting Firm.” Source: RevenueBase Database · checked Sep 28, 2026
16	Certification QSE	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Certification QSE accompagne les entreprises dans la mise en place, l’optimisation et la réussite de leurs démarches Qualité, Sécurité et Environnement (QSE).” Source: RevenueBase Database · checked Sep 28, 2026
17	Abbana Cybersécurité, Cloud, Infrastructures	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	6 contacts →
	Partial evidence “ABBANA est une société d’ingénierie informatique spécialisée en Cybersécurité, Cloud, DevOps, et Infogérance.” Source: RevenueBase Database · checked Sep 28, 2026
18	Stelau Conseil	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “Créé en 2002, Stelau Conseil est un cabinet d'audit et de conseil spécialisé dans la sécurité des systèmes d'information.” Source: RevenueBase Database · checked Sep 28, 2026
19	Shelaon Partners	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Nous conseillons et réalisons les intégrations technique sur mesure-Stratégie cybersécurité -Assistance technique et intégration en cybersécurité -Gouvernance (GRC)-Accompagnement…” Source: RevenueBase Database · checked Sep 28, 2026
20	Psswrd	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Fondé et opérationnel depuis septembre 2023, PSSWRD est un cabinet de conseil pure-player en cybersécurité, réunissant des femmes et des hommes engagés autour de valeurs fortes …” Source: RevenueBase Database · checked Sep 28, 2026
21	WELAN	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “WELAN est une société de conseil en cybersécurité qui accompagne les entreprises de toutes tailles désireuses de se protéger contre les menaces numériques croissantes.” Source: RevenueBase Database · checked Sep 28, 2026
22	Cysafe Consulting	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “CySAFE Consulting est un cabinet de conseil spécialisé en cybersécurité et management des risques qui accompagne les grandes, comme les petites entreprises, ainsi que les…” Source: RevenueBase Database · checked Sep 28, 2026
23	DPO Consulting International	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	3 contacts →
	Indirect evidence “Welcome to DPO Consulting, your trusted partner for personal data protection compliance.” Source: RevenueBase Database · checked Sep 28, 2026
24	MA Cyber	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “MA Cyber vous accompagne dans la sécurisation de votre système d'information.” Source: RevenueBase Database · checked Sep 28, 2026
25	Exocco	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	3 contacts →
	Strong evidence “Exocco accompagne les entreprises dans la structuration de leur sécurité : mise en conformité ISO 27001, préparation aux exigences de la directive européenne NIS 2, et infogérance…” 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: iso 27001 information 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 iso 27001 information security consultants.
Partial evidence: Its own public description names part of iso 27001 information security consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iso 27001 information 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 106 iso 27001 information security consultants based in Paris, France

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Iso 27001 information security consultants based in Paris, France at a glance

As of Sep 28, 2026

29.9%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 106 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 iso 27001 information 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 “iso 27001 information 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 iso 27001 information 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 iso 27001 information 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, 345 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 iso 27001 information 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 iso 27001 information security consultants are there based in Paris, France?

RevenueBase identified 106 iso 27001 information 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 iso 27001 information security consultants?

Paris leads France with 106 headquartered companies, followed by Lyon (20) and Toulouse (8).

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 345 verified decision-maker contacts tracked across these 106 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.