Company lists · Data verified August 2026

Top 20 Cloud infrastructure security companies based in Spain

Name: Cloud infrastructure 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 51 companies tracked

There are 51 cloud infrastructure security companies headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 1,320 professional contacts across them, including 267 with verified work emails and 84 with mobile numbers. Madrid is the largest hub.

This list covers cloud infrastructure 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.

51Companies

1,320Contacts tracked

267Verified emails

84Mobile numbers

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The 20 largest cloud infrastructure security companies based in Spain

Ranked by team size

Top 20 of 51 cloud infrastructure 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	Attackiq	Barcelona	51-200	158	74
4	A3sec	Madrid	51-200	122	24
5	Superna	Alicante Spain	51-200	111	18
6	Innotec Security	Madrid	501-1,000	105	14
7	Aiuken Cybersecurity	Boadilla Del Monte	51-200	104	21
8	Zepo Intelligence	Madrid	11-50	39	3
9	Apolo Cybersecurity	Barcelona	11-50	37	5
10	Madcoms Networks	Barcelona	11-50	32	13
11	Geserisk Centro DE Gestión DE LA Seguridad Y EL Riesgo Cibernético	Bormujos	11-50	16	4
12	cloud.gal	Santiago De Compostela	11-50	12	3
13	overe.io	Barcelona	11-50	11	6
14	ZEROD	Barcelona	11-50	11	4
15	SIE Soluciones IT	Irun	11-50	9	3
16	Ginzo Technologies	Logrono	11-50	6	5
17	Bytehide	Valencia	1-10	6	4
18	AO Data Cloud	Madrid	11-50	4	1
19	Metafrase Ciberseguridad Ciberresiliencia	Las Rozas De Madrid	1-10	3	1
20	Alisec Soluciones S.L	Llanera	1-10	2	2

Showing 20 of 51 cloud infrastructure security companies based in Spain

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Cloud infrastructure security companies based in Spain at a glance

As of Aug 28, 2026

11-50Median size (employees)

MadridLargest hub · 15 HQs

84Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Cloud infrastructure security companies by metro

Metro	Companies
Cloud infrastructure security companies in Madrid	15
Cloud infrastructure security companies in Barcelona	8
Cloud infrastructure security companies in Valencia	3
Cloud infrastructure security companies in Bormujos	2
Cloud infrastructure security companies in Sevilla	2
Cloud infrastructure security companies in Malaga	2
Cloud infrastructure security companies in Ourense	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 “cloud infrastructure 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; 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 cloud infrastructure security companies are there based in Spain?

There are 51 cloud infrastructure 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 cloud infrastructure security companies?

Madrid leads with 15 headquartered companies, followed by Barcelona (8) and Valencia (3).

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 267 verified decision-maker contacts tracked across these 51 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.