Company lists · Data verified August 2026

Top 25 Cybersecurity firms based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 625 companies tracked

There are 625 cybersecurity firms headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 9,185 professional contacts across them, including 1,448 with verified work emails and 201 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity firms 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.

625Companies

9,185Contacts tracked

1,448Verified emails

201Mobile numbers

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The 25 largest cybersecurity firms based in Spain

Ranked by team size

Top 25 of 625 cybersecurity firms 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	Panda Security	Bilbao	501-1,000	329	22
5	Incibe	Leon	51-200	253	6
6	Alhambra IT	Madrid	201-500	228	26
7	S21sec	Madrid	201-500	192	36
8	Govertis	Valencia	51-200	182	44
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	Superna	Alicante Spain	51-200	111	18
16	Wise Security Global	Barcelona	51-200	107	18
17	Innotec Security	Madrid	501-1,000	105	14
18	Aiuken Cybersecurity	Boadilla Del Monte	51-200	104	21
19	Tautenet	Madrid	51-200	93	11
20	Sidertia By Izertis	Madrid	51-200	92	12
21	GSS Security	n/a	51-200	89	9
22	Alto Intelligence	Madrid	51-200	80	24
23	Áudea Seguridad DE LA Información	Madrid	51-200	76	6
24	Hispasec	Malaga	51-200	68	11
25	Neverhack Spain	Barcelona	51-200	65	13

Showing 25 of 625 cybersecurity firms based in Spain

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Cybersecurity firms based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 199 HQs

201Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

353

11-50

198

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity firms by metro

Metro	Companies
Cybersecurity firms in Madrid	199
Cybersecurity firms in Barcelona	94
Cybersecurity firms in Malaga	27
Cybersecurity firms in Murcia	13
Cybersecurity firms in Valencia	12
Cybersecurity firms in San Sebastian	8
Cybersecurity firms in Sevilla	8

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 firms”, 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; 2 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 firms are there based in Spain?

There are 625 cybersecurity firms 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 firms?

Madrid leads with 199 headquartered companies, followed by Barcelona (94) and Malaga (27).

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 1,448 verified decision-maker contacts tracked across these 625 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.