Company lists · Data refreshed September 2026

Top 25 Cybersecurity engineers based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 258 companies tracked

RevenueBase identified 258 cybersecurity engineers headquartered in Spain as of September 2026 and tracks 3,377 professional contacts across them, including 792 with verified work emails and 100 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity engineers 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

258Companies

3,377Contacts tracked

792Verified emails

100Mobile numbers

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The 25 largest cybersecurity engineers based in Spain

Ranked by team size

Top 25 of 258 cybersecurity engineers 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 engineers: 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	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
2	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
3	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
4	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
5	A3sec	Indirect evidence	Madrid, Spain	51-200	122 contacts →
	Indirect evidence “Empresa de Ciberseguridad soportada en Datos.” Source: RevenueBase Database · checked Sep 1, 2026
6	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
7	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
8	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
9	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
10	Jtsec Beyond IT Security	Partial evidence	Granada, Spain	11-50	63 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 1, 2026
11	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
12	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
13	Lazarus Technology	Indirect evidence	San Sebastian De Los Reyes, Spain	51-200	43 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026
14	Zepo Intelligence	Indirect evidence	Madrid, Spain	11-50	39 contacts →
	Indirect evidence “The average cost of a data breach to your business can range from to $1.24 million.” Source: RevenueBase Database · checked Sep 1, 2026
15	Zerolynx	Indirect evidence	Alcorcon, Spain	51-200	37 contacts →
	Indirect evidence “Zerolynx, operating within a NIST-based framework, combines offensive security expertise with a strong focus on Governance, Risk, and Compliance (GRC) to help organizations…” Source: RevenueBase Database · checked Sep 1, 2026
16	Perseus Cybersecurity Services	Indirect evidence	Derio, Spain	11-50	32 contacts →
	Indirect evidence “POR QUÉ PERSEUS?” Source: RevenueBase Database · checked Sep 1, 2026
17	Serval Networks	Indirect evidence	Alcobendas, Spain	51-200	28 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026
18	Blackarrow Tarlogic	Indirect evidence	Spain	51-200	27 contacts →
	Indirect evidence “BlackArrow is the Tarlogic cyber security unit specialized in offensive driven tactics learned through the experience of years providing red team services.” Source: RevenueBase Database · checked Sep 1, 2026
19	Jakincode	Indirect evidence	Vitoria-Gasteiz, Spain	11-50	26 contacts →
	Indirect evidence “Expertos en ciberseguridad y compliance en el entorno empresarial.” Source: RevenueBase Database · checked Sep 1, 2026
20	Redborder	Indirect evidence	Zamudio, Spain	11-50	21 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026
21	Hard2bit Cybersecurity	Indirect evidence	Leganes, Spain	11-50	21 contacts →
	Indirect evidence “Hard2bit ayuda a empresas de todos los sectores a reducir riesgo tecnológico y elevar su nivel de ciberseguridad con un enfoque técnico, práctico y orientado a negocio.” Source: RevenueBase Database · checked Sep 1, 2026
22	Gotham Digital Science, A Stroz Friedberg Company	Indirect evidence	Madrid, Spain	51-200	21 contacts →
	Indirect evidence “Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.” Source: RevenueBase Database · checked Sep 1, 2026
23	Tecnek Ciberseguridad	Indirect evidence	Madrid, Spain	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 1, 2026
24	Beonesec Cybersecurity	Partial evidence	Sevilla, Spain	11-50	20 contacts →
	Partial evidence “BeOneSec Cybersecurity Solutions somos una empresa dedicada exclusivamente a la prestación de servicios y/o productos de ciberseguridad de alta especialización.” Source: RevenueBase Database · checked Sep 1, 2026
25	Hack By Security	Indirect evidence	Valencia, Spain	11-50	18 contacts →
	Indirect evidence “Somos un equipo con más de 20 años de experiencia especializado en servicios de Ciberseguridad y Ethical Hacking.” 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 engineers. 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 engineers.
Partial evidence: Its own public description names part of cybersecurity engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity engineers. 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 258 cybersecurity engineers based in Spain

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Cybersecurity engineers based in Spain at a glance

As of Sep 1, 2026

23.5%Verified-email coverage

3.0%Mobile-number coverage

13.1Average contacts per company

1-10Median size (employees)

27.1%Largest-city concentration · Madrid

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

143

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 engineers, 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 engineers”. 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 engineers), 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 engineers, 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, 792 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 engineers 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 engineers, 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 engineers are there based in Spain?

RevenueBase identified 258 cybersecurity engineers 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?

Advens, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most cybersecurity engineers?

Madrid leads with 70 headquartered companies, followed by Barcelona (37) and Malaga (13).

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 792 verified decision-maker contacts tracked across these 258 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.