Company lists · Data refreshed September 2026

Top 23 Defense cybersecurity companies based in Madrid, Spain

Name: Defense cybersecurity companies based in Madrid, Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 63 companies tracked

RevenueBase identified 63 defense cybersecurity companies headquartered in Madrid, Spain as of September 2026 and tracks 1,344 professional contacts across them, including 195 with verified work emails and 13 with mobile numbers. Madrid is the largest hub.

This list covers defense cybersecurity companies headquartered in Madrid, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 10, 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 10, 2026 86% judged on-target in blind review

63Companies

1,344Contacts tracked

195Verified emails

13Mobile numbers

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The 23 largest defense cybersecurity companies based in Madrid, Spain

Ranked by team size

Top 23 of 63 defense cybersecurity companies based in Madrid, Spain, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to defense 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	Alhambra IT	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	201-500	229 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 10, 2026
2	S21sec	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	201-500	191 contacts →
	Partial evidence “S21Sec, Cyber Solutions by Thales, is a leading European Cybersecurity pure-player, with more than 400 security experts and an Iberian SOC.” Source: RevenueBase Database · checked Sep 10, 2026
3	A3sec	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	51-200	124 contacts →
	Indirect evidence “Empresa de Ciberseguridad soportada en Datos.” Source: RevenueBase Database · checked Sep 10, 2026
4	Innotec Security	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	501-1,000	106 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 10, 2026
5	Neverhack Spain	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	51-200	64 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 10, 2026
6	Bedisruptive	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	51-200	54 contacts →
	Partial evidence “BeDisruptive is a multinational technology boutique specialising in cybersecurity that supports its clients in designing solutions and maintaining a secure environment in which…” Source: RevenueBase Database · checked Sep 10, 2026
7	Atalanta Cybersecurity & Digital	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	51-200	49 contacts →
	Partial evidence “Atalanta is a company specialising in cybersecurity, digital transformation and training.” Source: RevenueBase Database · checked Sep 10, 2026
8	Minery Report	Strong evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	24 contacts →
	Strong evidence “Minery Report is a Spanish tech company founded in 2018 by four experts from the Ministry of Defense, specializing in advanced cybersecurity and digital transformation solutions.” Source: RevenueBase Database · checked Sep 10, 2026
9	Tecnek Ciberseguridad	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	20 contacts →
	Indirect evidence “Expertos en seguridad de la información con amplia experiencia en el sector ubicados en Madrid.” Source: RevenueBase Database · checked Sep 10, 2026
10	Tecisa	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	16 contacts →
	Indirect evidence “Tecisa es una empresa proveedora de soluciones integradas de seguridad, formada por un grupo de ingenieros y técnicos superiores, de acreditada experiencia en el sector…” Source: RevenueBase Database · checked Sep 10, 2026
11	Cyberscope	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	14 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 10, 2026
12	Ciberso	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1,001-5,000	14 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 10, 2026
13	Autek Ingeniería	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	11 contacts →
	Indirect evidence “Fabricante español de productos de ciberseguridad especializado en cross-domain (transferencia controlada de información entre dominios de seguridad).” Source: RevenueBase Database · checked Sep 10, 2026
14	Areani	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	9 contacts →
	Partial evidence “Cybersecurity and cyberintelligence company.” Source: RevenueBase Database · checked Sep 10, 2026
15	Sophos Iberia	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	8 contacts →
	Indirect evidence “Sophos es un innovador líder mundial en soluciones avanzadas de ciberseguridad para combatir ciberataques, entre las que se incluyen servicios gestionados de Detección y Respuesta…” Source: RevenueBase Database · checked Sep 10, 2026
16	Sumwall Technology	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	7 contacts →
	Indirect evidence “Innovation meets Security” Source: RevenueBase Database · checked Sep 10, 2026
17	Scassi Ciberseguridad	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	11-50	6 contacts →
	Indirect evidence “Pertenecemos a SCASSI Group, grupo europeo dedicado en exclusiva desde 2005 a ofrecer a organizaciones de sectores críticos y estratégicos, soporte de consultoría e ingeniería en…” Source: RevenueBase Database · checked Sep 10, 2026
18	Cros Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	6 contacts →
	Indirect evidence “Transformamos los desafíos tecnológicos de tu negocio en oportunidades de crecimiento.” Source: RevenueBase Database · checked Sep 10, 2026
19	Technorizon Group	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	51-200	5 contacts →
	Indirect evidence “Technorizon group has been supplying IT security solutions and services across public and private sectors since 1996.” Source: RevenueBase Database · checked Sep 10, 2026
20	Havenio	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “Somos una consultora especializada en Seguridad, Inteligencia y Derecho Digital para hacer frente a las amenazas cibernéticas.” Source: RevenueBase Database · checked Sep 10, 2026
21	Reshet 5.0 Intelligence	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “Reshet 5.0 Intelligence S.” Source: RevenueBase Database · checked Sep 10, 2026
22	Pa1-One	Partial evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	1 contacts →
	Partial evidence “Cybersecurity Company.” Source: RevenueBase Database · checked Sep 10, 2026
23	Bluntcore Smart Security	Indirect evidence	Madrid, SpainHQ checked Sep 10, 2026	1-10	1 contacts →
	Indirect evidence “Bluntcore es el especialista en ciberseguridad del ecosistema de Unikal, un especialista de especialistas con un porfolio integral de servicios diseñado para proteger y fortalecer…” Source: RevenueBase Database · checked Sep 10, 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: defense 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 defense cybersecurity companies.
Partial evidence: Its own public description names part of defense cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense 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 23 of 63 defense cybersecurity companies based in Madrid, Spain

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Defense cybersecurity companies based in Madrid, Spain at a glance

As of Sep 10, 2026

14.5%Verified-email coverage

1.0%Mobile-number coverage

21.3Average contacts per company

11-50Median size (employees)

95.2%Largest-city concentration · Madrid

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 12.0d

1830–30

1231–60

061–90

090–180

0180+

Company record updated

Median 65.0d

00–30

59931–60

49761–90

17690–180

72180+

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 defense 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 Madrid, Spain whose own description of what they do matches “defense 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 defense 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 defense cybersecurity companies, and records with no verified work email. Companies headquartered outside Madrid 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, 195 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 10, 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.

Defense cybersecurity companies by metro in Spain

Defense cybersecurity companies in Madrid60
Defense cybersecurity companies in Barcelona30

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 defense cybersecurity 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 defense cybersecurity companies are there based in Madrid, Spain?

RevenueBase identified 63 defense cybersecurity companies headquartered in Madrid, 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?

Alhambra IT, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most defense cybersecurity companies?

Madrid leads with 60 headquartered companies, followed by Barcelona (30) and Malaga (12).

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 195 verified decision-maker contacts tracked across these 63 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 10, 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.