Company lists · Data verified August 2026

Top 19 Application security companies based in Madrid, Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 65 companies tracked

There are 65 application security companies headquartered in Madrid, Spain (RevenueBase, August 2026). RevenueBase tracks 1,266 professional contacts across them, including 205 with verified work emails and 19 with mobile numbers. Madrid is the largest hub.

This list covers application security companies headquartered in Madrid, 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.

65Companies

1,266Contacts tracked

205Verified emails

19Mobile numbers

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The 19 largest application security companies based in Madrid, Spain

Ranked by team size

Top 19 of 65 application security companies based in Madrid, 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	Innotec Security	Madrid	501-1,000	105	14
6	Tautenet	Madrid	51-200	93	11
7	Bedisruptive	Madrid	51-200	54	26
8	Atalanta Cybersecurity & Digital	Madrid	51-200	49	11
9	Zepo Intelligence	Madrid	11-50	39	3
10	Xygeni	Madrid	11-50	31	8
11	Gotham Digital Science, A Stroz Friedberg Company	Madrid	51-200	21	1
12	Tecnek Ciberseguridad	Madrid	11-50	20	3
13	Auditech	Madrid	11-50	14	2
14	Ciberso	Madrid	1,001-5,000	14	1
15	Cyberscope	Madrid	11-50	13	6
16	Alpine Security	Madrid	1-10	11	5
17	Cros Solutions	Madrid	1-10	6	2
18	AO Data Cloud	Madrid	11-50	4	1
19	Pa1-One	Madrid	1-10	1	1

Showing 19 of 65 application security companies based in Madrid, Spain

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Application security companies based in Madrid, Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 65 HQs

19Contacts with mobile numbers

0Emails 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

Application security companies by metro in Spain

Metro	Companies
Application security companies in Madrid	65
Application security companies in Barcelona	34
Application security companies in Malaga	10
Application security companies in Valencia	7
Application security companies in Murcia	6
Application security companies in Palma	4
Application security companies in Sevilla	4

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 “application security companies”, with match quality audited by blind human judging, and headquartered in Madrid, 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 application security companies are there based in Madrid, Spain?

There are 65 application security companies headquartered in Madrid, 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 application security companies?

Madrid leads with 65 headquartered companies, followed by Barcelona (34) and Malaga (10).

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 205 verified decision-maker contacts tracked across these 65 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.