Company lists · Data verified August 2026

Top 25 Data security consulting firms based in Portugal

Name: Data security consulting firms based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 93 companies tracked

There are 93 data security consulting firms headquartered in Portugal (RevenueBase, August 2026). RevenueBase tracks 787 professional contacts across them, including 345 with verified work emails and 47 with mobile numbers. Lisboa is the largest hub.

This list covers data security consulting firms headquartered in Portugal, 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.

93Companies

787Contacts tracked

345Verified emails

47Mobile numbers

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The 25 largest data security consulting firms based in Portugal

Ranked by team size

Top 25 of 93 data security consulting firms based in Portugal, 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	Securnet	Lisboa	51-200	134	85
2	Layer8	Porto	51-200	98	74
3	Tribetech	Alges	51-200	55	40
4	Defensepoint	Lisbon	51-200	44	16
5	Onesource, Consultoria Informática LDA	Coimbra	11-50	43	10
6	Chief Security Officers, SA	Amadora	11-50	43	7
7	Basetx Consulting	Paredes	11-50	28	23
8	Dixtior	Lisboa	51-200	28	19
9	Next IT	Vila Nova De Gaia	11-50	25	12
10	Healthysystems UMA Empresa Glintt Life	Porto	11-50	12	8
11	Rolling Space	Braga	11-50	12	5
12	Cyberprotech	Loule	1-10	12	2
13	DPO Consulting	Lisboa	1-10	11	2
14	Balwurk	Lisboa	11-50	10	7
15	MGVSI	Trofa	1-10	9	6
16	Palconsulting	Carnaxide	11-50	7	2
17	SOC Segurança Privada	Cascais	51-200	7	1
18	Vicxer	Lisbon	11-50	6	3
19	Homeostase	Amadora	1-10	6	1
20	Victor José & Associados, Sroc	Lisboa	11-50	4	2
21	Switch Digital Consulting	Porto	1-10	4	2
22	Segurti	Matosinhos	1-10	4	1
23	3 Strategy	Odivelas	1-10	3	1
24	Sysvalue	Lisboa	11-50	2	2
25	Code4people	Regiao	1-10	2	2

Showing 25 of 93 data security consulting firms based in Portugal

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Data security consulting firms based in Portugal at a glance

As of Aug 28, 2026

1-10Median size (employees)

LisboaLargest hub · 25 HQs

47Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Data security consulting firms by metro

Metro	Companies
Data security consulting firms in Lisboa	25
Data security consulting firms in Lisbon	7
Data security consulting firms in Porto	6
Data security consulting firms in Amadora	3
Data security consulting firms in Odivelas	2
Data security consulting firms in Paredes	2
Data security consulting firms in Vila Nova De Gaia	2

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 “data security consulting firms”, with match quality audited by blind human judging, and headquartered in Portugal.
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 data security consulting firms are there based in Portugal?

There are 93 data security consulting firms headquartered in Portugal as of August 2026 (RevenueBase).

What is the largest company on this list?

Securnet, headquartered in Lisboa, tops this list with the largest team on record.

Which city has the most data security consulting firms?

Lisboa leads with 25 headquartered companies, followed by Lisbon (7) and Porto (6).

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 345 verified decision-maker contacts tracked across these 93 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.