Company lists · Data refreshed September 2026
Top 25 Surveillance and security firms based in Portugal
RevenueBase identified 114 surveillance and security firms headquartered in Portugal as of September 2026 and tracks 3,701 professional contacts across them, including 372 with verified work emails. Lisbon is the largest hub.
This list covers surveillance and security firms 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 29, 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 surveillance and security firms based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 893 contacts → | ||||
Partial evidence “Security Company Electronics developers Systems integrator” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 641 contacts → | ||||
Partial evidence “Na Securitas protegemos habitações, locais de trabalho e comunidades.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 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 29, 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 31 contacts → | ||||
Indirect evidence “Há mais de 20 anos no mercado da segurança privada.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 25 contacts → | ||||
Indirect evidence “A Sensorpoint é uma empresa que se diferencia das demais do sector por desenvolver a sua actividade transversalmente ao ciclo de vida de uma instalação.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 17 contacts → | ||||
Partial evidence “Security Systems and IT Engineering” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Partial evidence “Founded in 1993 as a Distribution-oriented company for the Electronic Security Specialists.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 8 contacts → | ||||
Indirect evidence “A Trialarmes Lda.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “Casmar Electrónica começou a sua atividade como distribuidor de produtos de segurança em 1978 em Barcelona, e em 2005 inicia a sua internacionalização com a abertura física da sua…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Indirect evidence “A VIGION – Inovação e Segurança é uma empresa de destaque e referência no mercado nacional pela forma revolucionária como veio inovar e otimizar os sistemas de segurança.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Indirect evidence “A SOC · Segurança Privada é uma empresa especializada na análise e prevenção de riscos, no desenvolvimento de Soluções e Serviços na área da Segurança e Vigilância.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “Empresa certificada em instalação e manutenção a sistemas de alarme de intrusão; incêndios; videovigilância, extintores; controlo de acessos e outros.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “A Horalarme iniciou a sua atividade a 6 de fevereiro de 2003 e apresenta-se enquanto empresa instaladora de sistemas de alarme de intrusão, de incêndio, de circuitos fechados de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Previchama is a company based out of Portugal.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “A 4SFTIS – Soluções Integradas de Segurança (4Safety®) é uma empresa especializada e certificada na instalação, manutenção e assistência técnica a inúmeros sistemas de segurança…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Composta por pessoas com um longo caminho percorrido como Técnicos de Segurança Eletrónica nas áreas de Security e Safety, a MGLR conta com mais de 40 Anos de experiência no setor…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “A Wiisecure é uma empresa especializada no fornecimento e instalação de sistemas de segurança, como alarmes de intrusão, alarmes de incêndio, videovigilância e controlo de…” Source: RevenueBase Database · checked Sep 29, 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: surveillance and security firms. 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 surveillance and security firms.
- Partial evidence
- Its own public description names part of surveillance and security firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name surveillance and security firms. 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 114 surveillance and security firms based in Portugal
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Surveillance and security firms based in Portugal at a glance
As of Sep 29, 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 114 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 surveillance and security firms, 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 “surveillance and security firms”. 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 surveillance and security firms), 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 surveillance and security firms, 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, 372 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 29, 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.
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 surveillance and security firms, 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 surveillance and security firms are there based in Portugal?
RevenueBase identified 114 surveillance and security firms 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?
Strong Segurança, S.A, headquartered in Amadora, tops this list with the largest team on record.
Which city has the most surveillance and security firms?
Lisbon leads with 13 headquartered companies, followed by Amadora (6) 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 372 verified decision-maker contacts tracked across these 114 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 29, 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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