Company lists · Data verified August 2026

Top 25 Cybersecurity engineers based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 258 companies tracked

There are 258 cybersecurity engineers headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 3,377 professional contacts across them, including 792 with verified work emails and 100 with mobile numbers. Madrid is the largest hub.

This list covers cybersecurity engineers 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.

258Companies

3,377Contacts tracked

792Verified emails

100Mobile numbers

Unlock all 258 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity engineers based in Spain

Ranked by team size

Top 25 of 258 cybersecurity engineers 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	Advens	Barcelona	501-1,000	588	314
2	S21sec	Madrid	201-500	192	36
3	Attackiq	Barcelona	51-200	158	74
4	Secure&it	Las Rozas De Madrid	51-200	145	9
5	A3sec	Madrid	51-200	122	24
6	Tarlogic	n/a	51-200	122	21
7	A2secure	Madrid	51-200	115	24
8	Innotec Security	Madrid	501-1,000	105	14
9	Neverhack Spain	Barcelona	51-200	65	13
10	Jtsec Beyond IT Security	Granada	11-50	63	8
11	Bedisruptive	Madrid	51-200	54	26
12	Ackcent Cybersecurity	n/a	51-200	48	12
13	Lazarus Technology	San Sebastian De Los Reyes	51-200	43	12
14	Zepo Intelligence	Madrid	11-50	39	3
15	Zerolynx	Alcorcon	51-200	37	10
16	Perseus Cybersecurity Services	Derio	11-50	32	9
17	Serval Networks	Alcobendas	51-200	28	3
18	Blackarrow Tarlogic	n/a	51-200	27	5
19	Jakincode	Vitoria-Gasteiz	11-50	26	3
20	Redborder	Zamudio	11-50	21	5
21	Hard2bit Cybersecurity	Leganes	11-50	21	2
22	Gotham Digital Science, A Stroz Friedberg Company	Madrid	51-200	21	1
23	Tecnek Ciberseguridad	Madrid	11-50	20	3
24	Beonesec Cybersecurity	Sevilla	11-50	20	3
25	Hack By Security	Valencia	11-50	18	2

Showing 25 of 258 cybersecurity engineers based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 792 reachable decision-makers.

Free account · no credit card

See all 258 companies

Cybersecurity engineers based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 70 HQs

100Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

143

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity engineers by metro

Metro	Companies
Cybersecurity engineers in Madrid	70
Cybersecurity engineers in Barcelona	37
Cybersecurity engineers in Malaga	13
Cybersecurity engineers in Valencia	7
Cybersecurity engineers in Murcia	7
Cybersecurity engineers in Sevilla	5
Cybersecurity engineers in Palma	3

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 engineers”, 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 engineers are there based in Spain?

There are 258 cybersecurity engineers headquartered in Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

Advens, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most cybersecurity engineers?

Madrid leads with 70 headquartered companies, followed by Barcelona (37) and Malaga (13).

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 792 verified decision-maker contacts tracked across these 258 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.

Ready to reach these companies? Verified emails and direct dials for all 258 cybersecurity engineers based in Spain. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity engineers by geography

Browse the directory

Browse: Companies home · All Spain lists · All Cybersecurity engineers lists · New lists

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.