Company lists · Data refreshed September 2026
Top 25 Security consultancies based in Portugal
RevenueBase identified 206 security consultancies headquartered in Portugal as of September 2026 and tracks 3,479 professional contacts across them, including 452 with verified work emails. Lisboa is the largest hub.
This list covers security consultancies headquartered in Portugal, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest security consultancies based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 448 contacts → | ||||
Indirect evidence “A Prestibel opera no mercado desde 1985 e é especializada na prestação de serviços de segurança privada, tanto na vertente da vigilância humana como na vertente de vigilância…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 213 contacts → | ||||
Indirect evidence “Com mais de uma década de experiência no setor de Segurança e Vigilância Humana e Eletrónica, a PowerSHIELD afirma-se como uma referência nacional no setor da segurança privada.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 105 contacts → | ||||
Indirect evidence “A VisionWare é uma empresa 100% portuguesa, fundada em 2005 e altamente especializada em Segurança de Informação: Cibersegurança, TI, investigação forense, compliance, privacidade…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 96 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 70 contacts → | ||||
Indirect evidence “Engenharia de Segurança O Grupo Global Segurança foi fundado em 1985, e é actualmente um dos mais antigos na actividade da segurança.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 59 contacts → | ||||
Indirect evidence “A COPS, Habilitada pelo Ministério da Administração Interna, com o Alvará nº 175 alínea a), somos uma empresa cujo principal objetivo é a Sua segurança.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 45 contacts → | ||||
Indirect evidence “We work to secure and deliver the most fundamental force in business: trust.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 43 contacts → | ||||
Partial evidence “OneSource is an IT company specialized in the fields of data communications, security, networking and systems management, including the consultancy, auditing, design, development…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 43 contacts → | ||||
Partial evidence “Chief Security Officers it's a company of the group Art of Knowledge, specialized in the field of information security.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 40 contacts → | ||||
Indirect evidence “DefensePoint builds secure software and delivers cybersecurity services for regulated industries - defense, finance, healthcare, and energy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 33 contacts → | ||||
Indirect evidence “Fundada na década de 70 sob a designação social Fernando Ramos & Vianas, iniciou-se o caminho que nos leva à Vianas de hoje.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 31 contacts → | ||||
Indirect evidence “Há mais de 20 anos no mercado da segurança privada.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 27 contacts → | ||||
Indirect evidence “Fundada em 1996, em Aveiro, a Metaveiro - Segurança e Telecomunicações destaca-se com uma vasta experiência e um portfólio abrangente de clientes e serviços nos setores de…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 25 contacts → | ||||
Indirect evidence “Your partner for IT managed services and cybersecurity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 22 contacts → | ||||
Indirect evidence “Com atividade desde somos uma empresa especializada em Projetos, Comercialização, Instalação e Manutenção de equipamentos e sistemas de SEGURANÇA ELETRÓNICA e de COMBATE A…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 20 contacts → | ||||
Indirect evidence “GLOONE is a company incorporated in 2004.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 20 contacts → | ||||
Partial evidence “We were born in 2002 with the aim of providing hardware and software engineering solutions as well as technology, consultancy and products for Security Systems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Indirect evidence “ADYTA is a spin-off of the University of Porto, with exclusively Portuguese capitals, whose objective is the promotion of specialized solutions adapted to the needs of sovereign…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “Established from the ground up in 2016 by Cybersecurity Professionals, CyberArm is unique in its goal of simplifying cybersecurity for all organizations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Indirect evidence “A Visotrónica surgiu em 1983, na área dos sistemas de segurança, nomeadamente CCTV, Sistemas de Alarme, Controlos de Acesso, sistemas de Detenção de Incêndio entre outros.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Indirect evidence “Devido ao aumento das necessidades de segurança existentes no mercado, surgiu a oportunidade de apresentação de soluções tecnológicas capazes de satisfazer todos os problemas…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Partial evidence “We are consulting services company specialising in cyber security with a focus on Application Security & GRC.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “ANSI, é uma empresa qualificada na prestação de serviços de consultoria, orientação e assistência operacional às empresas, em diversas áreas, nomeadamente no apoio à gestão…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Partial evidence “We are a company that presents, supplies and installs solutions, equipment and products of high technical condition in the field of security of people and goods.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Indirect evidence “KNOWLEDGE ON DATA PROTECTION!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: security consultancies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names security consultancies.
- Partial evidence
- Its own public description names part of security consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security consultancies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 206 security consultancies based in Portugal
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Security consultancies based in Portugal at a glance
As of Sep 21, 2026Companies by employee count
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 206 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Portugal whose own description of what they do matches “security consultancies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names security consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among security consultancies, and records with no verified work email. Companies headquartered outside Portugal are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 452 across the full list. 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 September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security consultancies by metro
- Security consultancies in Lisboa39
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names security consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many security consultancies are there based in Portugal?
RevenueBase identified 206 security consultancies headquartered in Portugal as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Prestibel, headquartered in Lisboa, tops this list with the largest team on record.
Which city has the most security consultancies?
Lisboa leads with 39 headquartered companies, followed by Lisbon (10) and Porto (10).
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 452 verified decision-maker contacts tracked across these 206 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 Smart Search, 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.
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