Company lists · Data verified August 2026

Top 25 Data security companies based in Spain

Name: Data security companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 101 companies tracked

There are 101 data security companies headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 1,547 professional contacts across them, including 220 with verified work emails and 41 with mobile numbers. Madrid is the largest hub.

This list covers data security companies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

101Companies

1,547Contacts tracked

220Verified emails

41Mobile numbers

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The 25 largest data security companies based in Spain

Ranked by team size

Top 25 of 101 data security companies based in Spain, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Alhambra IT	Madrid	201-500	228	26
2	S21sec	Madrid	201-500	192	36
3	A3sec	Madrid	51-200	122	24
4	A2secure	Madrid	51-200	115	24
5	Superna	Alicante Spain	51-200	111	18
6	Hispasec	Malaga	51-200	68	11
7	Lazarus Technology	San Sebastian De Los Reyes	51-200	43	12
8	Ironchip	Madrid	11-50	37	7
9	Apolo Cybersecurity	Barcelona	11-50	37	5
10	Sealpath	Bilbao	11-50	23	4
11	Arexdata	Madrid	11-50	21	5
12	Tecnek Ciberseguridad	Madrid	11-50	20	3
13	Skynet Systems	Murcia	1-10	20	1
14	Kalacibi	Alcobendas	11-50	16	7
15	Geserisk Centro DE Gestión DE LA Seguridad Y EL Riesgo Cibernético	Bormujos	11-50	16	4
16	Electro Alavesa Seguridad By Attlon	Vitoria	11-50	13	3
17	Valoradata	Montcada I Reixac	51-200	12	1
18	ABF Ciberseguridad Y Sistemas	Navarrete	11-50	10	4
19	Bloock	Barcelona	11-50	10	4
20	Areani	Madrid	11-50	9	3
21	CYBER	Barcelona	11-50	9	2
22	Synergial Cybersecurity	Olesa De Montserrat	11-50	8	4
23	Cibersare	Barakaldo	1-10	8	1
24	Blackdogs	Barcelona	1-10	8	1
25	LEX Program	San Sebastian	1-10	7	2

Showing 25 of 101 data security companies based in Spain

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Data security companies based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 26 HQs

41Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Data security companies by metro

Metro	Companies
Data security companies in Madrid	26
Data security companies in Barcelona	15
Data security companies in Malaga	7
Data security companies in San Sebastian	2
Data security companies in Palma	2
Data security companies in Murcia	2
Data security companies in San Javier	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “data security companies”, with match quality audited by blind human judging, and headquartered in Spain.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many data security companies are there based in Spain?

There are 101 data security companies headquartered in Spain as of August 2026 (RevenueBase).

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 data security companies?

Madrid leads with 26 headquartered companies, followed by Barcelona (15) and Malaga (7).

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 220 verified decision-maker contacts tracked across these 101 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.