Company lists · Data verified August 2026

Top 25 Cybersecurity companies based in Madrid, Spain

Name: Cybersecurity 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 190 companies tracked

Our directory lists 190 cybersecurity companies based in Madrid, Spain, with 3,920 professional contacts and 738 email addresses. The list was last updated in August 2026, and Madrid is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

190Companies

3,920Contacts tracked

738Verified emails

101Mobile numbers

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The 25 largest cybersecurity companies based in Madrid, Spain

Ranked by team size

Top 25 of 190 cybersecurity 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	MNEMO	Madrid	501-1,000	444	10
2	Risco Group	Madrid	501-1,000	294	182
3	Socradar Extended Threat Intelligence	Madrid	201-500	259	139
4	Alhambra IT	Madrid	201-500	228	26
5	Essence Group	Madrid	201-500	214	17
6	S21sec	Madrid	201-500	192	36
7	YARIX	Madrid	201-500	131	67
8	A3sec	Madrid	51-200	122	24
9	A2secure	Madrid	51-200	115	24
10	Innotec Security	Madrid	501-1,000	105	14
11	Tautenet	Madrid	51-200	93	11
12	Sidertia By Izertis	Madrid	51-200	92	12
13	Alto Intelligence	Madrid	51-200	80	24
14	Bedisruptive	Madrid	51-200	54	26
15	Atalanta Cybersecurity & Digital	Madrid	51-200	49	11
16	Optenet Allot	Madrid	501-1,000	43	3
17	Internet Security Auditors	Madrid	11-50	41	6
18	Smart Human Capital	Madrid	51-200	40	6
19	Covert Security Plana Fābrega	Madrid	51-200	39	8
20	Zepo Intelligence	Madrid	11-50	39	3
21	Ironchip	Madrid	11-50	37	7
22	Muttii Technologies	Madrid	51-200	26	1
23	Transparent Edge	Madrid	11-50	24	5
24	Minery Report	Madrid	11-50	24	2
25	Kymatio	Madrid	11-50	21	7

Showing 25 of 190 cybersecurity companies based in Madrid, Spain

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Cybersecurity companies based in Madrid, Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 190 HQs

101Contacts 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

Cybersecurity companies by metro in Spain

Metro	Companies
Cybersecurity companies in Madrid	190
Cybersecurity companies in Barcelona	97
Cybersecurity companies in Malaga	26
Cybersecurity companies in Valencia	13
Cybersecurity companies in Murcia	13
Cybersecurity companies in San Sebastian	9
Cybersecurity companies in Zaragoza	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 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; 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 companies are in the directory?

The directory lists 190 cybersecurity companies based in Madrid, Spain.

Which city has the most cybersecurity companies?

Madrid is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 3,920 professional contacts and 738 email addresses for the listed cybersecurity companies.

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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.