Company lists · Data refreshed September 2026
Top 25 Network security companies based in Spain
RevenueBase identified 170 network security companies headquartered in Spain as of September 2026 and tracks 3,199 professional contacts across them, including 561 with verified work emails and 23 with mobile numbers. Madrid is the largest hub.
This list covers network security companies headquartered in Spain, 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 companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | S2grupoIndirect evidence | 683 | |||
“We are a European company specialising in cybersecurity, cyberintelligence and cyberdefence, with more than 20 years of experience protecting critical infrastructures and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 229 | ||||
“Alhambra es una compañía IT que ayuda a cualquier tipo de organización a proteger sus datos, sus comunicaciones y sus procesos contra todo tipo de incidentes a través de Servicios…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | S21secPartial evidence | 191 | |||
“S21Sec, Cyber Solutions by Thales, is a leading European Cybersecurity pure-player, with more than 400 security experts and an Iberian SOC.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 171 | ||||
“Somos una empresa líder en Ciberseguridad, ofrecemos productos y servicios de la más alta calidad.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 124 | ||||
“Empresa de Ciberseguridad soportada en Datos.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 123 | ||||
“Tarlogic is an international company that specializes in cyber intelligence and cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 114 | ||||
“A2SECURE is a global cybersecurity expert based in Spain, founded in 2009 with private capital and now established as a leading MSSP provider.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 110 | ||||
“IT Security Consulting and Deployment- Sofistic is a cybersecurity company, born from researchers in this field, with offices in USA, Spain, Panama, Colombia, Chile and the…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Innotec SecurityIndirect evidence | 106 | |||
“Si andas por aquí, significa que te dedicas a la ciberseguridad, que te gustaría trabajar con nosotros o quizá que necesitas que te ayudemos con alguno de nuestros servicios.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 104 | ||||
“Your hybrid infrastructure, cloud and network cybersecurity partner Aiuken Cybersecurity is TOP Vendor 2020 for MDR by Gartner.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 68 | ||||
“Hispasec juega un papel fundamental en la historia de la ciberseguridad en España desde que nacimos hace 25 años.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 43 | ||||
“Somos una empresa especializada en ciberseguridad, que acompaña, protege y asesora al cliente en todo su ciclo de vida digital a través de 3 grandes fases: 1.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 | ||||
“Somos expertos en ciberseguridad impulsada por IA.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | ZEPOIndirect evidence | 38 | |||
“The average cost of a data breach to your business can range from to $1.24 million.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 32 | ||||
“Madcoms serves companies from all sectors helping them to secure their communications and network infrastructures with the most appropriate technology and advanced design…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 | ||||
“OptimumTIC es una empresa especialista en CiberSeguridad creada en 2009, dedicada a ofrecer servicios transversales y plataformas gestionadas de los mejores soluciones y equipo…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 | ||||
“Seguridad Informática & CiberSeguridad Gestionada para Empresas.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 22 | ||||
“Since Redborder’s inception, we’ve been committed to ensuring client security through advanced, AI-powered solutions designed to adapt to today’s dynamic threat landscape.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 | ||||
“BeOneSec Cybersecurity Solutions somos una empresa dedicada exclusivamente a la prestación de servicios y/o productos de ciberseguridad de alta especialización.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 20 | ||||
“Outpost24 es una multinacional europea de origen sueco que ayuda a las organizaciones a mejorar su ciber resiliencia con un amplio rango de soluciones de Gestión Continuada de la…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 20 | ||||
“Expertos en seguridad de la información con amplia experiencia en el sector ubicados en Madrid.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 18 | ||||
“Cybertix ofrece soluciones de ciberseguridad "All-in-One" automatizadas gracias a la Inteligencia Artificial, especialmente diseñadas para proteger a las PYMEs frente a amenazas…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 | ||||
“Soluciones y servicios gestionados de ciberseguridad para organizaciones que no pueden permitirse parar.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 15 | ||||
“Somos un equipo multidisciplinar de 35 profesionales, entre expertos y colaboradores, con una sólida trayectoria en ciberseguridad y una base tecnológica respaldada por nuestro…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 | ||||
“We are a team of cybersecurity experts who are passionate about constantly confronting new and sophisticated cyber threats and blocking them before they evolve into truly…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 170 network security companies based in Spain
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Network security companies based in Spain 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 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 Spain whose own description of what they do matches “network security 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 companies, and records with no verified work email. Companies headquartered outside Spain 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, 561 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 companies by metro
- Network security companies in Madrid42
- Network security companies in Barcelona28
Frequently asked
How many network security companies are there based in Spain?
RevenueBase identified 170 network security companies headquartered in Spain 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?
S2grupo, headquartered in Valencia, tops this list with the largest team on record.
Which city has the most network security companies?
Madrid leads with 42 headquartered companies, followed by Barcelona (28) and Malaga (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 561 verified decision-maker contacts tracked across these 170 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.
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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 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.
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