Company lists · Data refreshed September 2026

Top 25 Security testing companies based in Paris, France

Name: Security testing companies based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 59 companies tracked

RevenueBase identified 59 security testing companies headquartered in Paris, France as of September 2026 and tracks 1,172 professional contacts across them, including 372 with verified work emails and 15 with mobile numbers. Paris is the largest hub.

This list covers security testing companies 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 13, 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 13, 2026 86% judged on-target in blind review

59Companies

1,172Contacts tracked

372Verified emails

15Mobile numbers

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The 25 largest security testing companies based in Paris, France

Ranked by team size

Top 25 of 59 security testing companies based in Paris, France, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to security testing 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	Yeswehack	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	586 contacts →
	Partial evidence “YesWeHack is a leading Offensive Security and Exposure Management platform delivering integrated, API-based solutions to secure organisations’ growing attack surfaces.” Source: RevenueBase Database · checked Sep 13, 2026
2	Synacktiv	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	201-500	171 contacts →
	Partial evidence “Synacktiv is an offensive security company founded in 2012 by several security experts.” Source: RevenueBase Database · checked Sep 13, 2026
3	LEXFO	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	51-200	66 contacts →
	Partial evidence “LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.” Source: RevenueBase Database · checked Sep 13, 2026
4	ACG Cybersecurity	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
5	Randorisec	Partial evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
6	Cogiceo	Strong evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	32 contacts →
	Strong evidence “COGICEO is a company founded in 2012, specializing in IT security audits and penetration testing (pentest).” Source: RevenueBase Database · checked Sep 13, 2026
7	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
8	Intuity	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	15 contacts →
	Indirect evidence “Nous aidons les entreprises à sécuriser leurs actifs, tels que leurs applications web et leurs systèmes d'information, tout en renforçant la sécurité globale des organisations.” Source: RevenueBase Database · checked Sep 13, 2026
9	Sinext Consulting	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	15 contacts →
	Partial evidence “SINEXT Consulting offers complete, integrated, results oriented testing solutions.” Source: RevenueBase Database · checked Sep 13, 2026
10	Cybershen	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	11 contacts →
	Indirect evidence “Cybershen permet de mettre en place et de piloter une cybersécurité globale et sans efforts.” Source: RevenueBase Database · checked Sep 13, 2026
11	Cybertic	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
12	Kamea Security	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	10 contacts →
	Indirect evidence “Our services- Pentest / cybersecurity audit - Red Team as a Service - CISO as a Service - Risk Assessment” Source: RevenueBase Database · checked Sep 13, 2026
13	Highjack Offensive Cybersecurity	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	10 contacts →
	Indirect evidence “Chez High Jack, nous sommes bien plus que des accompagnateurs de digitalisation, nous sommes des catalyseurs de la transformation numérique de votre structure!” Source: RevenueBase Database · checked Sep 13, 2026
14	Cyber Experts	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	10 contacts →
	Indirect evidence “Startup, VSE and SME specialists, at Cyber Experts, we build a solid digital rampart for your company, allowing it to strengthen itself against cyber attackers.” Source: RevenueBase Database · checked Sep 13, 2026
15	cybersolutions.fr	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	9 contacts →
	Partial evidence “For 10 years we have supported our clients in protecting their information assets: SIEM / SOC / SOAR; Threat Intelligence / UBA / IAM / API Security” Source: RevenueBase Database · checked Sep 13, 2026
16	Qacode	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
17	Psswrd	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
18	WELAN	Indirect evidence	Paris, FranceHQ checked Sep 13, 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 13, 2026
19	Novastill	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “NovaStill a la conviction profonde que la cybersécurité est un catalyseur du succès de nos clients qui sont aussi nos partenaires.” Source: RevenueBase Database · checked Sep 13, 2026
20	MA Cyber	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “MA Cyber vous accompagne dans la sécurisation de votre système d'information.” Source: RevenueBase Database · checked Sep 13, 2026
21	Caeirus	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “Fondé en 2017, CAEIRUS est un cabinet d'expertise spécialisé en cybersécurité qui accompagne les entreprises à répondre aux problématiques sécurité au sein de leur système…” Source: RevenueBase Database · checked Sep 13, 2026
22	Trackflaw	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “Trackflaw est une startup spécialisée dans les tests d'intrusion.” Source: RevenueBase Database · checked Sep 13, 2026
23	Secuboost	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	2 contacts →
	Indirect evidence “Secuboost est spécialisé en audits de sécurité.” Source: RevenueBase Database · checked Sep 13, 2026
24	BMB Consultx	Indirect evidence	Paris, FranceHQ checked Sep 13, 2026	11-50	2 contacts →
	Indirect evidence “BMB ConsultX is a cybersecurity consulting firm.” Source: RevenueBase Database · checked Sep 13, 2026
25	rootsec.eu	Partial evidence	Paris, FranceHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “Protecting your data from the most severe threats begins with a disciplined approach to securing your entire information technology infrastructure.” Source: RevenueBase Database · checked Sep 13, 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: security testing 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 security testing companies.
Partial evidence: Its own public description names part of security testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name security testing 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 59 security testing companies based in Paris, France

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Security testing companies based in Paris, France at a glance

As of Sep 13, 2026

31.7%Verified-email coverage

1.3%Mobile-number coverage

19.9Average contacts per company

1-10Median size (employees)

96.6%Largest-city concentration · Paris

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

2920–30

7631–60

361–90

090–180

1180+

Company record updated

Median 55.0d

00–30

68631–60

28661–90

12190–180

79180+

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 security testing 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 Paris, France whose own description of what they do matches “security testing 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 security testing 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 security testing companies, 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, 372 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 13, 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.

Security testing companies by metro in France

Security testing companies in Paris57

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 security testing 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 security testing companies are there based in Paris, France?

RevenueBase identified 59 security testing companies 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?

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

Which city has the most security testing companies?

Paris leads with 57 headquartered companies, followed by Lyon (11) and Lille (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 372 verified decision-maker contacts tracked across these 59 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 13, 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.