Company lists · Data refreshed September 2026
Top 25 Network security consulting companies based in Spain
RevenueBase identified 219 network security consulting companies headquartered in Spain as of September 2026 and tracks 2,331 professional contacts across them, including 363 with verified work emails and 20 with mobile numbers. Madrid is the largest hub.
This list covers network security consulting 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 consulting companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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. | |||||
| 2 | 145 | ||||
“Secure & IT es una empresa especializada en seguridad de la información que trabaja en cinco líneas: compliance, procesos y gobierno IT, sistemas y seguridad IT, seguridad…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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. | |||||
| 4 | 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. | |||||
| 5 | 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. | |||||
| 6 | 91 | ||||
“GSSecurity nace en el año 2006 de la mano de un grupo de profesionales con una dilatada experiencia en el sector de la seguridad residencial y empresarial.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 76 | ||||
“Áudea Seguridad de la Información es una consultora tecnológica, con 10 años de experiencia, que presta servicios profesionales relacionados con la gestión de la seguridad de la…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 64 | ||||
“As of 2024, Innovery, a leading group in the Italian and European market with a wide range of solutions and services in the field of cybersecurity, has joined Neverhack.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 63 | ||||
“We are a cybersecurity company providing consulting and evaluation services under different evaluation methodologies such as LINCE, Common Criteria, FIPS 140-3, PCI-PTS, PCI-CPoC…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 54 | ||||
“BeDisruptive is a multinational technology boutique specialising in cybersecurity that supports its clients in designing solutions and maintaining a secure environment in which…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 49 | ||||
“Atalanta is a company specialising in cybersecurity, digital transformation and training.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 49 | ||||
“Gestinet es una empresa tecnológica con 30 años de trayectoria, formada por un equipo propio en Catalunya, Madrid y Valencia.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 48 | ||||
“At Ackcent, we focus exclusively on cybersecurity and on delivering outcomes our clients can measure.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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. | |||||
| 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 | Perseus Cybersecurity ServicesIndirect evidence | 32 | |||
“POR QUÉ PERSEUS?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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. | |||||
| 18 | 28 | ||||
“SERVAL NETWORKS somos una empresa consultora de Ciberseguridad e Infraestructura de Comunicaciones, con foco en el mercado español de grandes y medianas empresas y operadores de…” 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 | ||||
“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. | |||||
| 21 | 20 | ||||
“Empresa de servicios informáticos dedicada a la tecnología de la información y las comunicaciones.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 18 | ||||
“Somos un equipo con más de 20 años de experiencia especializado en servicios de Ciberseguridad y Ethical Hacking.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 | ||||
“En GrayHats llevamos más de 13 años ayudando a empresas a proteger lo que realmente importa: su información, su reputación y su continuidad.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 14 | ||||
“Ciberso nace para responder a los desafíos de seguridad que la digitalización acelerada y los nuevos modelos de negocio traen consigo sobre aplicaciones, infraestructuras, datos y…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 13 | ||||
“At Cross Mind, we understand that every company has unique cybersecurity needs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 219 network security consulting companies based in Spain
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Network security consulting 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 consulting 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 consulting 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 consulting 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, 363 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 consulting companies by metro
- Network security consulting companies in Madrid58
- Network security consulting companies in Barcelona32
Frequently asked
How many network security consulting companies are there based in Spain?
RevenueBase identified 219 network security consulting 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?
S21sec, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most network security consulting companies?
Madrid leads with 58 headquartered companies, followed by Barcelona (32) and Malaga (9).
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 363 verified decision-maker contacts tracked across these 219 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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