Company lists · Data refreshed September 2026

Top 25 Cybersecurity defense contractors based in Spain

Name: Cybersecurity defense contractors based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 294 companies tracked

RevenueBase identified 294 cybersecurity defense contractors headquartered in Spain as of September 2026 and tracks 6,068 professional contacts across them, including 1,121 with verified work emails and 135 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity defense contractors 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 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 Sep 1, 2026 86% judged on-target in blind review

294Companies

6,068Contacts tracked

1,121Verified emails

135Mobile numbers

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The 25 largest cybersecurity defense contractors based in Spain

Ranked by team size

Top 25 of 294 cybersecurity defense contractors based in Spain, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity defense contractors: 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	SIA Group	Partial evidence	Alcobendas, Spain	1,001-5,000	704 contacts →
	Partial evidence “SIA is the leading cybersecurity company in Spain and Portugal, both in terms of turnover and expert talent, with more than 1,600 specialists.” Source: RevenueBase Database · checked Sep 1, 2026
2	Advens	Partial evidence	Barcelona, Spain	501-1,000	588 contacts →
	Partial evidence “Advens is a European, independent and outstanding leader in cybersecurity.” Source: RevenueBase Database · checked Sep 1, 2026
3	MNEMO	Indirect evidence	Madrid, Spain	501-1,000	444 contacts →
	Indirect evidence “MNEMO: We are #DigitalChallengers.” Source: RevenueBase Database · checked Sep 1, 2026
4	Panda Security	Partial evidence	Bilbao, Spain	501-1,000	329 contacts →
	Partial evidence “Since its inception in 1990, headquartered in Spain, Panda Security has become one of the foremost European company in advanced cybersecurity solutions and services, as well as…” Source: RevenueBase Database · checked Sep 1, 2026
5	Alhambra IT	Indirect evidence	Madrid, Spain	201-500	228 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 1, 2026
6	S21sec	Partial evidence	Madrid, Spain	201-500	192 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 1, 2026
7	Govertis	Indirect evidence	Valencia, Spain	51-200	182 contacts →
	Indirect evidence “Expertos en Ciberseguridad, Privacidad, GRC, IRM y Cumplimiento Normativo unificando la perspectiva Legal y Tecnológica GOVERTIS es la mayor firma de Advisory 100% especializada…” Source: RevenueBase Database · checked Sep 1, 2026
8	Attackiq	Indirect evidence	Barcelona, Spain	51-200	158 contacts →
	Indirect evidence “AttackIQ® is trusted by top organizations worldwide to validate security controls in real time.” Source: RevenueBase Database · checked Sep 1, 2026
9	Secure&it	Indirect evidence	Las Rozas De Madrid, Spain	51-200	145 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026
10	YARIX	Indirect evidence	Madrid, Spain	201-500	131 contacts →
	Indirect evidence “Where Security Meets Innovation In an increasingly interconnected world, Yarix – the Cyber Security Brand of Var Group – stands as a key player in protecting organizations and…” Source: RevenueBase Database · checked Sep 1, 2026
11	A3sec	Indirect evidence	Madrid, Spain	51-200	122 contacts →
	Indirect evidence “Empresa de Ciberseguridad soportada en Datos.” Source: RevenueBase Database · checked Sep 1, 2026
12	Tarlogic	Partial evidence	Spain	51-200	122 contacts →
	Partial evidence “Tarlogic is an international company that specializes in cyber intelligence and cybersecurity.” Source: RevenueBase Database · checked Sep 1, 2026
13	A2secure	Partial evidence	Madrid, Spain	51-200	115 contacts →
	Partial evidence “A2SECURE is a global cybersecurity expert based in Spain, founded in 2009 with private capital and now established as a leading MSSP provider.” Source: RevenueBase Database · checked Sep 1, 2026
14	Wise Security Global	Partial evidence	Barcelona, Spain	51-200	107 contacts →
	Partial evidence “Cybertrust & Cybersecurity Wise Security is a technology company that is part of Var Group Spain.” Source: RevenueBase Database · checked Sep 1, 2026
15	Innotec Security	Indirect evidence	Madrid, Spain	501-1,000	105 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 1, 2026
16	Aiuken Cybersecurity	Partial evidence	Boadilla Del Monte, Spain	51-200	104 contacts →
	Partial evidence “Your hybrid infrastructure, cloud and network cybersecurity partner Aiuken Cybersecurity is TOP Vendor 2020 for MDR by Gartner.” Source: RevenueBase Database · checked Sep 1, 2026
17	Tautenet	Indirect evidence	Madrid, Spain	51-200	93 contacts →
	Indirect evidence “Somos una empresa con más de 16 años de experiencia.” Source: RevenueBase Database · checked Sep 1, 2026
18	Hispasec	Indirect evidence	Malaga, Spain	51-200	68 contacts →
	Indirect evidence “Hispasec juega un papel fundamental en la historia de la ciberseguridad en España desde que nacimos hace 25 años.” Source: RevenueBase Database · checked Sep 1, 2026
19	Neverhack Spain	Partial evidence	Barcelona, Spain	51-200	65 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 1, 2026
20	Dltcode	Indirect evidence	Madrid, Spain	11-50	59 contacts →
	Indirect evidence “DLTCode es una empresa que opera en el ámbito de la consultaría tecnológica y digital, ciberseguridad e innovación abierta.” Source: RevenueBase Database · checked Sep 1, 2026
21	Bedisruptive	Partial evidence	Madrid, Spain	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 1, 2026
22	Atalanta Cybersecurity & Digital	Partial evidence	Madrid, Spain	51-200	49 contacts →
	Partial evidence “Atalanta is a company specialising in cybersecurity, digital transformation and training.” Source: RevenueBase Database · checked Sep 1, 2026
23	Ackcent Cybersecurity	Partial evidence	Spain	51-200	48 contacts →
	Partial evidence “At Ackcent, we focus exclusively on cybersecurity and on delivering outcomes our clients can measure.” Source: RevenueBase Database · checked Sep 1, 2026
24	Gestinet Internet Informàtica	Indirect evidence	Valencia, Spain	51-200	48 contacts →
	Indirect evidence “Gestinet es una empresa tecnológica con 30 años de trayectoria, formada por un equipo propio en Catalunya, Madrid y Valencia.” Source: RevenueBase Database · checked Sep 1, 2026
25	Softeng	Indirect evidence	Barcelona, Spain	11-50	46 contacts →
	Indirect evidence “Somos una consultora tecnológica especialista en digitalización y ciberseguridad, Top Partner Cloud de Microsoft.” Source: RevenueBase Database · checked Sep 1, 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 defense contractors. 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 defense contractors.
Partial evidence: Its own public description names part of cybersecurity defense contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity defense contractors. 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 294 cybersecurity defense contractors based in Spain

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Cybersecurity defense contractors based in Spain at a glance

As of Sep 1, 2026

18.5%Verified-email coverage

2.2%Mobile-number coverage

20.6Average contacts per company

1-10Median size (employees)

31.6%Largest-city concentration · Madrid

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

153

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 defense contractors, 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 Spain whose own description of what they do matches “cybersecurity defense contractors”. 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 defense contractors), 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 defense contractors, 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 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, 1,121 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 1, 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 defense contractors by metro

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 cybersecurity defense contractors, 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 cybersecurity defense contractors are there based in Spain?

RevenueBase identified 294 cybersecurity defense contractors 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?

SIA Group, headquartered in Alcobendas, tops this list with the largest team on record.

Which city has the most cybersecurity defense contractors?

Madrid leads with 93 headquartered companies, followed by Barcelona (42) and Malaga (15).

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 1,121 verified decision-maker contacts tracked across these 294 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 1, 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.