Company lists · Data refreshed September 2026

Top 25 Cybersecurity incident investigation companies based in France

Name: Cybersecurity incident investigation companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 96 companies tracked

RevenueBase identified 96 cybersecurity incident investigation companies headquartered in France as of September 2026 and tracks 1,813 professional contacts across them, including 422 with verified work emails. Paris is the largest hub.

This list covers cybersecurity incident investigation companies 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

96Companies

1,813Contacts tracked

422Verified emails

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The 25 largest cybersecurity incident investigation companies based in France

Ranked by team size

Top 25 of 96 cybersecurity incident investigation companies 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 cybersecurity incident investigation companies: 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	own.security	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	506 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
2	Cybelangel	Indirect evidence	Clichy, FranceHQ checked Sep 28, 2026	51-200	160 contacts →
	Indirect evidence “CybelAngel combines artificial intelligence and human expertise to help companies in all industries to detect, analyze and effectively counter cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
3	Gatewatcher	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	138 contacts →
	Indirect evidence “European leader in intrusion detection and advanced threat detection, Gatewatcher has been protecting the critical networks of large companies as well as public institutions since…” Source: RevenueBase Database · checked Sep 28, 2026
4	XMCO	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	111 contacts →
	Indirect 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
5	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 28, 2026	51-200	75 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
6	Strangebee	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	68 contacts →
	Partial evidence “StrangeBee is a cybersecurity software company based in Paris.” Source: RevenueBase Database · checked Sep 28, 2026
7	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 28, 2026	n/a	47 contacts →
	Indirect 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
8	ACG Cybersecurity	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial 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
9	Abakus Sécurité	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Expertise en cybersécurité - Abakus Sécurité vous accompagne sur l'ensemble du cycle de vie de vos projets en cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
10	Randorisec	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 28, 2026
11	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Five Nines est née en 2019 d’un constat simple, celui d’un manque crucial de compétences et d’expérience dans la sécurisation de la transformation digitale des entreprises.” Source: RevenueBase Database · checked Sep 28, 2026
12	Iparcus	Indirect evidence	Lille, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Iparcus; société d'expertise et de conseil en cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
13	Vaadata	Indirect evidence	Lyon, FranceHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “We support organisations of all sizes and across all sectors with - penetration testing on all types of targets (web and mobile apps, infrastructure, networks, cloud, IoT, etc.)-…” Source: RevenueBase Database · checked Sep 28, 2026
14	AKYL	Indirect evidence	Pantin, FranceHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “LA CYBERSÉCURITÉ, VERSION AKYL Une approche aussi pragmatique que passionnée.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cybertic	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Cyber attaque, pénétration, hameçonnage… Depuis 2010 et la multiplication des Cyber-attaques, la cyber sécurité n’est plus une option pour les DSI, sa maîtrise est devenu…” Source: RevenueBase Database · checked Sep 28, 2026
16	Limon IT	Indirect evidence	Saint-étienne, FranceHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
17	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
18	Sekost	Partial evidence	Rennes, FranceHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Sekost offers companies an initial cybersecurity diagnostic to assess their situation, identify problems and make rapid progress.” Source: RevenueBase Database · checked Sep 28, 2026
19	CNC Expertise	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	5 contacts →
	Partial evidence “CnC Expertise est un cabinet d’expertise en assurance spécialisé dans les réponses à incident cyber et l'expertise des sinistres liés aux technologies de l’information.” Source: RevenueBase Database · checked Sep 28, 2026
20	Fenrisk	Indirect evidence	Ermont, FranceHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Fenrisk est une société spécialisée dans la sécurité informatique offensive et le test d'intrusion créée par deux experts forts de plusieurs années d'expérience dans ces domaines.” 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	Anguis	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Chez Anguis, nous sommes bien plus qu'une entreprise de sécurité informatique : nous sommes des architectes de la confiance numérique.” Source: RevenueBase Database · checked Sep 28, 2026
23	Oxydian	Indirect evidence	Labège, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Oxydian est une société innovante de service en cybersécurité Nos experts en sécurité offensive réalisent des audits intrusifs et développent des solutions techniques novatrices…” Source: RevenueBase Database · checked Sep 28, 2026
24	Akaoma	Partial evidence	Jouy Sur Eure, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “AKAOMA – Your Cybersecurity Partner Since 2002, AKAOMA has been supporting businesses, institutions, and organizations in facing ever-growing cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
25	Exatrack	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Au cours de ces dernières années le nombre d’attaques informatiques a connu une très forte augmentation, ciblant aussi bien les gouvernements que les sociétés privées.” 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: cybersecurity incident investigation companies. 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 cybersecurity incident investigation companies.
Partial evidence: Its own public description names part of cybersecurity incident investigation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity incident investigation companies. 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 96 cybersecurity incident investigation companies based in France

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Cybersecurity incident investigation companies based in France at a glance

As of Sep 28, 2026

23.3%Verified-email coverage

18.9Average contacts per company

1-10Median size (employees)

37.5%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 96 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 cybersecurity incident investigation companies, 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 “cybersecurity incident investigation companies”. 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 cybersecurity incident investigation companies), 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 cybersecurity incident investigation companies, 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, 422 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.

Cybersecurity incident investigation companies by metro

Cybersecurity incident investigation companies in Paris36

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 cybersecurity incident investigation companies, 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 cybersecurity incident investigation companies are there based in France?

RevenueBase identified 96 cybersecurity incident investigation companies 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?

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

Which city has the most cybersecurity incident investigation companies?

Paris leads with 36 headquartered companies, followed by Rennes (3) and Toulouse (3).

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 422 verified decision-maker contacts tracked across these 96 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.