Company lists · Data verified August 2026

Top 25 Cybersecurity service providers based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 521 companies tracked

There are 521 cybersecurity service providers headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 7,453 professional contacts across them, including 1,391 with verified work emails and 199 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity service providers 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.

521Companies

7,453Contacts tracked

1,391Verified emails

199Mobile numbers

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The 25 largest cybersecurity service providers based in Spain

Ranked by team size

Top 25 of 521 cybersecurity service providers 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	SIA Group	Alcobendas	1,001-5,000	704	31
2	Advens	Barcelona	501-1,000	588	314
3	MNEMO	Madrid	501-1,000	444	10
4	Incibe	Leon	51-200	253	6
5	Alhambra IT	Madrid	201-500	228	26
6	S21sec	Madrid	201-500	192	36
7	Govertis	Valencia	51-200	182	44
8	Proficio	Barcelona	51-200	180	110
9	Attackiq	Barcelona	51-200	158	74
10	Secure&it	Las Rozas De Madrid	51-200	145	9
11	YARIX	Madrid	201-500	131	67
12	A3sec	Madrid	51-200	122	24
13	Tarlogic	n/a	51-200	122	21
14	A2secure	Madrid	51-200	115	24
15	Wise Security Global	Barcelona	51-200	107	18
16	Innotec Security	Madrid	501-1,000	105	14
17	Aiuken Cybersecurity	Boadilla Del Monte	51-200	104	21
18	Tautenet	Madrid	51-200	93	11
19	Áudea Seguridad DE LA Información	Madrid	51-200	76	6
20	Hispasec	Malaga	51-200	68	11
21	Neverhack Spain	Barcelona	51-200	65	13
22	Dltcode	Madrid	11-50	59	24
23	Bedisruptive	Madrid	51-200	54	26
24	Atalanta Cybersecurity & Digital	Madrid	51-200	49	11
25	Ackcent Cybersecurity	n/a	51-200	48	12

Showing 25 of 521 cybersecurity service providers based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,391 reachable decision-makers.

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Cybersecurity service providers based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 145 HQs

199Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

305

11-50

160

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity service providers by metro

Metro	Companies
Cybersecurity service providers in Madrid	145
Cybersecurity service providers in Barcelona	80
Cybersecurity service providers in Malaga	21
Cybersecurity service providers in Valencia	15
Cybersecurity service providers in Murcia	12
Cybersecurity service providers in Sevilla	9
Cybersecurity service providers in Zaragoza	7

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 “cybersecurity service providers”, 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; 3 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 cybersecurity service providers are there based in Spain?

There are 521 cybersecurity service providers headquartered in Spain as of August 2026 (RevenueBase).

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 service providers?

Madrid leads with 145 headquartered companies, followed by Barcelona (80) and Malaga (21).

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 1,391 verified decision-maker contacts tracked across these 521 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.