Company lists · Data verified August 2026

Top 25 Cybersecurity defense consultants based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 440 companies tracked

There are 440 cybersecurity defense consultants headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 6,620 professional contacts across them, including 1,209 with verified work emails and 130 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity defense consultants 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.

440Companies

6,620Contacts tracked

1,209Verified emails

130Mobile numbers

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The 25 largest cybersecurity defense consultants based in Spain

Ranked by team size

Top 25 of 440 cybersecurity defense consultants 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	Alhambra IT	Madrid	201-500	228	26
5	S21sec	Madrid	201-500	192	36
6	Govertis	Valencia	51-200	182	44
7	Attackiq	Barcelona	51-200	158	74
8	Secure&it	Las Rozas De Madrid	51-200	145	9
9	YARIX	Madrid	201-500	131	67
10	A3sec	Madrid	51-200	122	24
11	Tarlogic	n/a	51-200	122	21
12	A2secure	Madrid	51-200	115	24
13	Wise Security Global	Barcelona	51-200	107	18
14	Innotec Security	Madrid	501-1,000	105	14
15	Aiuken Cybersecurity	Boadilla Del Monte	51-200	104	21
16	GSS Security	n/a	51-200	89	9
17	Áudea Seguridad DE LA Información	Madrid	51-200	76	6
18	Hispasec	Malaga	51-200	68	11
19	Neverhack Spain	Barcelona	51-200	65	13
20	Jtsec Beyond IT Security	Granada	11-50	63	8
21	Dltcode	Madrid	11-50	59	24
22	Bedisruptive	Madrid	51-200	54	26
23	Atalanta Cybersecurity & Digital	Madrid	51-200	49	11
24	Ackcent Cybersecurity	n/a	51-200	48	12
25	Gestinet Internet Informàtica	Valencia	51-200	48	12

Showing 25 of 440 cybersecurity defense consultants based in Spain

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Cybersecurity defense consultants based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 120 HQs

130Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

257

11-50

132

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity defense consultants by metro

Metro	Companies
Cybersecurity defense consultants in Madrid	120
Cybersecurity defense consultants in Barcelona	66
Cybersecurity defense consultants in Malaga	20
Cybersecurity defense consultants in Valencia	13
Cybersecurity defense consultants in Murcia	9
Cybersecurity defense consultants in Sevilla	7
Cybersecurity defense consultants in Zaragoza	6

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 defense consultants”, 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; 1 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 defense consultants are there based in Spain?

There are 440 cybersecurity defense consultants 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 defense consultants?

Madrid leads with 120 headquartered companies, followed by Barcelona (66) and Malaga (20).

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 1,209 verified decision-maker contacts tracked across these 440 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.