Company lists · Data refreshed November 2026

Top 24 IT security consulting services based in Portugal

RevenueBase identified 163 company matches for IT security consulting services associated with Portugal as of November 2026 and tracks 2,079 professional contacts across them, including 604 with verified work emails. Lisbon is the largest hub.

This list covers company matches for IT security consulting services associated with Portugal, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
163Companies
2,079Contacts tracked
604Verified emails
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The 24 largest IT security consulting services based in Portugal

Ranked by team size
Top 24 of 163 company matches for IT security consulting services based in Portugal, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchErmesinde, PortugalHQ recorded Nov 5, 202651-200136 contacts →

Exact match

“Fundada em 2002, a SECURNET dedica-se à integração de tecnologias de informação, prestando um conjunto de serviços técnicos especializados de consultoria e auditoria, engenharia…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLisbon, PortugalHQ recorded Nov 5, 202651-200112 contacts →

Exact match

“A LAYER8 é uma empresa de Segurança da Informação e Gestão de Conformidade dedicada à proteção dos seus ativos digitais e à garantia da conformidade regulamentar.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchPorto, PortugalHQ recorded Nov 5, 202651-20092 contacts →

Exact match

“A Decsis é uma empresa de tecnologia fundada em 1994 que ajuda empresas a prosperarem com soluções de TI personalizadas e confiáveis.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchCarnaxide, PortugalHQ recorded Nov 5, 202611-5080 contacts →

Exact match

“Engenharia de Segurança O Grupo Global Segurança foi fundado em 1985, e é actualmente um dos mais antigos na actividade da segurança.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchMatosinhos, PortugalHQ recorded Nov 5, 202651-20073 contacts →

Exact match

“At ORBCOM, we are passionate about technology and innovation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLisbon, PortugalHQ recorded Nov 5, 2026n/a67 contacts →

Exact match

“A IT Consulting é uma empresa que constrói soluções eficientes nas áreas das tecnologias de informação contribuindo para o desenvolvimento e continuidade do seu negócio.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchPorto, PortugalHQ recorded Nov 5, 2026201-50060 contacts →

Exact match

“ARMIS is a technology group with more than 19 years of history, dedicated to innovation, development and implementation of solutions that improve the growth of its clients.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchAlfragide, PortugalHQ recorded Nov 5, 202611-5056 contacts →

Exact match

“CyberSafe is a Portuguese company focused on cybersecurity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLisbon, PortugalHQ recorded Nov 5, 202611-5053 contacts →

Exact match

“Chief Security Officers it's a company of the group Art of Knowledge, specialized in the field of information security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchLisbon, PortugalHQ recorded Nov 5, 202651-20049 contacts →

Exact match

“We work to secure and deliver the most fundamental force in business: trust.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLisbon, PortugalHQ recorded Nov 5, 202651-20046 contacts →

Exact match

“DefensePoint builds secure software and delivers cybersecurity services for regulated industries - defense, finance, healthcare, and energy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchCoimbra, PortugalHQ recorded Nov 5, 202611-5044 contacts →

Exact match

“OneSource is an IT company specialized in the fields of data communications, security, networking and systems management, including the consultancy, auditing, design, development…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLisbon, PortugalHQ recorded Nov 5, 202651-20036 contacts →

Exact match

“We work, IT works.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLisbon, PortugalHQ recorded Nov 5, 202611-5030 contacts →

Exact match

“Information technology consulting services”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchEsposende, PortugalHQ recorded Nov 5, 202611-5028 contacts →

Exact match

“O Grupo Érre garante serviços de consultoria em diversas áreas de atuação no mercado nacional e internacional.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchVila Nova De Gaia, PortugalHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“Your partner for IT managed services and cybersecurity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAlmada, PortugalHQ recorded Nov 5, 202651-20022 contacts →

Exact match

“A ITGest IS é uma empresa especializada em infraestruturas tecnológicas, serviços geridos (IT Managed Services) e cibersegurança, posicionando-se como um parceiro estratégico na…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchParedes, PortugalHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“A Base TX é uma empresa especializada no desenvolvimento e implementação de Software de Gestão, Infra-Estruturas e Segurança.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLoulé, PortugalHQ recorded Nov 5, 20261-1017 contacts →

Exact match

“Empresa Especializada em Cibersegurança, Proteção de Dados e Integração de Tecnologias - Cyber Security as a Service (CSaaS)”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchViana Do Castelo, PortugalHQ recorded Nov 5, 202651-20016 contacts →

Exact match

“Established from the ground up in 2016 by Cybersecurity Professionals, CyberArm is unique in its goal of simplifying cybersecurity for all organizations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchPorto, PortugalHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“Eficiência operacional e segura.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchLisbon, PortugalHQ recorded Nov 5, 202651-20012 contacts →

Exact match

“We run IT!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchErmesinde, PortugalHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“A PROXSYS SOLUTIONS é uma empresa integradora de soluções tecnológicas, com vasta experiência na área de Sistemas de Informação e Segurança.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchBraga, PortugalHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“Rolling Space is an IT company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 24 of 163 IT security consulting services based in Portugal

See the full list, filter by size, metro and specialty, and access 604 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security consulting services based in Portugal at a glance

As of Nov 5, 2026
29.1%Verified-email coverage
12.8Average contacts per company
1-10Median size (employees)
30.7%Largest-city concentration · Lisbon
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
97
11-50
47
51-200
16
201-500
2
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 163 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Portugal whose business descriptions match “IT security consulting services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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
Every displayed company carries at least one verified work email. RevenueBase tracks 604 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

IT security consulting services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT security consulting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT security consulting services are there based in Portugal?

RevenueBase identified 163 company matches for IT security consulting services associated with Portugal as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Securnet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT security consulting services?

Lisbon leads with 50 company records, followed by Porto (15) and Amadora (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 604 professional contacts with verified work emails tracked across these 163 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.