Company lists · Data refreshed August 2026

Top 25 Cybersecurity companies based in Paris, France

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

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 340 companies tracked

Our directory lists 340 cybersecurity companies based in Paris, France, with 4,682 professional contacts and 1,247 email addresses. The list was last updated in August 2026, and Paris is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 30, 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 RevenueBase Smart Search rating on every row Refreshed Aug 30, 2026 86% judged on-target in blind review

340Companies

4,682Contacts tracked

1,247Verified emails

133Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cybersecurity companies based in Paris, France

Ranked by team size

Top 25 of 340 cybersecurity companies based in Paris, France, ranked by team size, largest first. Data refreshed Aug 30, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	Filigran	Strong evidence	Paris, France	201-500	167 contacts →
	Strong evidence “Filigran, a cybersecurity company, delivers a unique open-source, threat-informed approach to Continuous Threat Exposure Management (CTEM).” Source: RevenueBase Database · checked Aug 30, 2026
2	S3ns	Indirect evidence	Paris, France	51-200	153 contacts →
	Indirect evidence “Alliance entre #Thales, leader français de la #cybersécurité, et #Google, leader mondial du #Cloud proposant les meilleures technologies au service de l’#innovation, S3NS a pour…” Source: RevenueBase Database · checked Aug 30, 2026
3	Harfanglab	Indirect evidence	Paris, France	51-200	119 contacts →
	Indirect evidence “Your endpoints, our protection - Empower your analysts, overcome the threats” Source: RevenueBase Database · checked Aug 30, 2026
4	Egerie	Strong evidence	Paris, France	51-200	110 contacts →
	Strong evidence “At Egerie, we believe cybersecurity shouldn't be a constraint, it should be a true driver of sustainable performance.” Source: RevenueBase Database · checked Aug 30, 2026
5	Quarkslab	Indirect evidence	Paris, France	51-200	94 contacts →
	Indirect evidence “Fondée en 2011 par Fred Raynal, Quarkslab est une entreprise française spécialisée dans la cybersécurité et plus spécifiquement dans la protection et l'analyse des logiciels.” Source: RevenueBase Database · checked Aug 30, 2026
6	Strangebee	Strong evidence	Paris, France	51-200	66 contacts →
	Strong evidence “StrangeBee is a cybersecurity software company based in Paris.” Source: RevenueBase Database · checked Aug 30, 2026
7	LEXFO	Indirect evidence	Paris, France	51-200	65 contacts →
	Indirect evidence “LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.” Source: RevenueBase Database · checked Aug 30, 2026
8	Cyberlift	Indirect evidence	Paris, France	51-200	55 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Aug 30, 2026
9	Techso Group	Indirect evidence	Paris, France	51-200	54 contacts →
	Indirect evidence “TECHSO GROUP est un cabinet international spécialisé en cybersécurité, intervenant auprès d’institutions financières, d’organisations publiques et d’opérateurs d’infrastructures…” Source: RevenueBase Database · checked Aug 30, 2026
10	Mantra	Indirect evidence	Paris, France	51-200	52 contacts →
	Indirect evidence “Mantra is a cyber security startup filling the gap of current email security solutions.” Source: RevenueBase Database · checked Aug 30, 2026
11	Qevlar AI	Indirect evidence	Paris, France	51-200	51 contacts →
	Indirect evidence “Qevlar AI turns security operations into a self-improving defense system.” Source: RevenueBase Database · checked Aug 30, 2026
12	Dattak	Indirect evidence	Paris, France	51-200	51 contacts →
	Indirect evidence “Dattak is an insurtech with a mission to protect businesses against cyberattacks.” Source: RevenueBase Database · checked Aug 30, 2026
13	Feelagile	Indirect evidence	Paris, France	11-50	38 contacts →
	Indirect evidence “FeelAgile est une start-up innovante spécialisée dans la conformité et la certification en cybersécurité.” Source: RevenueBase Database · checked Aug 30, 2026
14	Løvell	Indirect evidence	Paris, France	11-50	38 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Aug 30, 2026
15	Kytl Security	Indirect evidence	Paris, France	11-50	34 contacts →
	Indirect evidence “KYTL \| Spécialiste de la protection des données et des environnements critiques; Fondée par des experts en cybersécurité cumulant plus de 15 ans d’expérience, KYTL accompagne les…” Source: RevenueBase Database · checked Aug 30, 2026
16	Bsecure	Indirect evidence	Paris, France	51-200	33 contacts →
	Indirect evidence “Bsecure est un cabinet d'expertise en cybersécurité 100% français, fondé en 2009, et détenu en fonds propres par ses dirigeants.” Source: RevenueBase Database · checked Aug 30, 2026
17	Artifeel	Indirect evidence	Paris, France	11-50	31 contacts →
	Indirect evidence “French start-up Artifeel's mission is to enable infrastructure operators to ensure the continuity and availability of their services (telecoms, energy, water, gas, rail networks…” Source: RevenueBase Database · checked Aug 30, 2026
18	Randorisec	Strong evidence	Paris, France	11-50	31 contacts →
	Strong evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Aug 30, 2026
19	protected.eu	Indirect evidence	Paris, France	51-200	29 contacts →
	Indirect evidence “Dans un monde où le digital imprègne chaque aspect de nos vies, les risques numériques ne sont plus une menace abstraite.” Source: RevenueBase Database · checked Aug 30, 2026
20	P1 Security	Indirect evidence	Paris, France	11-50	29 contacts →
	Indirect evidence “We provide services and technologies to identify, detect and recover from critical threats and vulnerabilities on signalling protocols like SS7/SIGTRAN, Diameter, GPRS/GTP, IMS…” Source: RevenueBase Database · checked Aug 30, 2026
21	Abakus Sécurité	Indirect evidence	Paris, France	11-50	29 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 Aug 30, 2026
22	Cybersel Group	Indirect evidence	Paris, France	11-50	27 contacts →
	Indirect evidence “Cybersel – Your Trusted Partner in Risk And Compliance For ICT Security Governance Cyber threats and regulatory requirements evolve every day, we help businesses stay ahead.” Source: RevenueBase Database · checked Aug 30, 2026
23	Five Nines	Indirect evidence	Paris, France	11-50	26 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 Aug 30, 2026
24	WLF	Indirect evidence	Paris, France	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Aug 30, 2026
25	Harmonie Technologie Site	Strong evidence	Paris, France	51-200	21 contacts →
	Strong evidence “As the main independent provider of cybersecurity and risk management consulting and technical expertise, Harmonie Technologie partners with key accounts (mainly from CAC40 and…” Source: RevenueBase Database · checked Aug 30, 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 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 340 cybersecurity companies based in Paris, France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,247 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity companies based in Paris, France at a glance

As of Aug 30, 2026

26.6%Verified-email coverage

2.8%Mobile-number coverage

13.8Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Paris

Aug 30, 2026Page data refreshed

Companies by employee count

1-10

213

11-50

51-200

201-500

501-1,000

1,001-5,000

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 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 “cybersecurity 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 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 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, 1,247 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 August 30, 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 companies by metro in France

Cybersecurity companies in Paris340
Cybersecurity companies in Lyon40

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 340 cybersecurity companies based in Paris, France.

Which city has the most cybersecurity companies?

Paris is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 4,682 professional contacts and 1,247 email addresses for the listed cybersecurity companies.

Ready to reach these companies? Verified emails and direct dials for all 340 cybersecurity companies based in Paris, France. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity companies by geography

Browse the directory

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.