Company lists · Data refreshed September 2026
Top 25 Network security monitoring companies based in France
RevenueBase identified 126 network security monitoring companies headquartered in France as of September 2026 and tracks 2,501 professional contacts across them, including 835 with verified work emails and 57 with mobile numbers. Paris is the largest hub.
This list covers network security monitoring 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 network security monitoring companies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 160 | ||||
“CybelAngel combines artificial intelligence and human expertise to help companies in all industries to detect, analyze and effectively counter cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 144 | ||||
“Créée en Juin 2002, Services Network Security est spécialisée dans la sécurisation des passerelles internet et dans les interconnexions VPN.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 138 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 35 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 30 | ||||
“Fondée en 2001, ACE Service concentre son activité sur son savoir-faire : la sécurité des systèmes d'information.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 26 | ||||
“Certilience, Votre sécurité informatique, notre priorité!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 25 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 17 | ||||
“Network, Security and Cyber Security Company” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 17 | ||||
“Sec-Cure est la marque commerciale de DC Communication.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 | ||||
“Nous veillons sur la sécurité de votre Système d’Information.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 | ||||
“Alfabet Group est une entreprise qui propose des services managés de la surveillance des évènements en cybersécurité et accompagne les Grand comptes et les entreprises de taille…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 | ||||
“EASYDESK propose un large panel de solutions afin de répondre aux principales problématiques liées aux parcs informatiques et à leur sécurité.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 | ||||
“Are we legion?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 12 | ||||
“Vos indicateurs disent que tout fonctionne.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 | ||||
“Cyber attacks are becoming more varied and sophisticated.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 | ||||
“ZeroTrust fournit aux PME-ETI une protection totale de leurs actifs et de leurs données.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 | ||||
“Chez High Jack, nous sommes bien plus que des accompagnateurs de digitalisation, nous sommes des catalyseurs de la transformation numérique de votre structure!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 | ||||
“Fondée en 2020, notre mission est de protéger les entreprises contre les menaces numériques croissantes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 | ||||
“For 10 years we have supported our clients in protecting their information assets: SIEM / SOC / SOAR; Threat Intelligence / UBA / IAM / API Security” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 | ||||
“SBi : Expert en Cybersécurité et Performance Digitale Chez SBi, nous offrons des solutions complètes pour protéger et optimiser votre infrastructure informatique.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 126 network security monitoring companies based in France
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 835 reachable decision-makers.
Free signup · no credit card
Network security monitoring companies based in France at a glance
As of Sep 5, 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 network security monitoring companies, 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 “network security monitoring companies”. 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 network security monitoring 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 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, 835 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 5, 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.
Network security monitoring companies by metro
- Network security monitoring companies in Paris34
Frequently asked
How many network security monitoring companies are there based in France?
RevenueBase identified 126 network security monitoring 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 network security monitoring companies?
Paris leads with 34 headquartered companies, followed by Toulouse (3) and Auxerre (2).
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 835 verified decision-maker contacts tracked across these 126 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 126 network security monitoring companies based in France. Start with a free account, no credit card.
Get the full listRelated lists
Network security monitoring companies by geography
- Network security monitoring companies based in the United States
- Network security monitoring companies based in the United Kingdom
- Network security monitoring companies based in Brazil
- Network security monitoring companies based in Canada
- Network security monitoring companies based in Australia
- Network security monitoring companies based in Germany
- Network security monitoring companies based in Spain
- Network security monitoring companies based in the Netherlands
- Network security monitoring companies based in Italy
- Network security monitoring companies based in South Africa
- Network security monitoring companies based in Mexico
- Network security monitoring companies based in Israel
Browse the directory
Browse: Companies home · All France lists · All Network security monitoring companies 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
- Network security monitoring companies based in the United States
- Network security monitoring companies based in the United Kingdom
- Network security monitoring companies based in Brazil
- Network security monitoring companies based in Canada
- Network security monitoring companies based in Australia
- Network security monitoring companies based in Germany