Company lists · Data refreshed September 2026
Top 23 Managed security service providers based in Portugal
RevenueBase identified 61 managed security service providers headquartered in Portugal as of September 2026 and tracks 522 professional contacts across them, including 272 with verified work emails and 31 with mobile numbers. Lisbon is the largest hub.
This list covers managed security service providers 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, how directly it supports the match, and when it was last checked. Data refreshed September 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.
The 23 largest managed security service providers based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 129 | ||||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 96 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 56 | ||||
“CyberSafe is a Portuguese company focused on cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 40 | ||||
“DefensePoint builds secure software and delivers cybersecurity services for regulated industries - defense, finance, healthcare, and energy.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 25 | ||||
“Your partner for IT managed services and cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 17 | ||||
“Cyber1 is an information technology company that presents solutions in the areas of Cyber Security, IoT, Data Protection, Cloud Computing and Cryptocurrency Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 | ||||
“Established from the ground up in 2016 by Cybersecurity Professionals, CyberArm is unique in its goal of simplifying cybersecurity for all organizations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 | ||||
“Empresa Especializada em Cibersegurança, Proteção de Dados e Integração de Tecnologias - Cyber Security as a Service (CSaaS)” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | MGVSIIndirect evidence | 9 | |||
“We focus on implementing IT Solutions tailored to the needs of our customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 | ||||
“Established in 2018 as a spinoff of ITSector, SecuritySide is a Portuguese firm founded by a seasoned group of fintech specialists.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4 | ||||
“A Switch Digital Consulting (SDC) é uma consultora especializada em cibersegurança, focada na definição e implementação de estratégias que reforçam a resiliência digital.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 3 | ||||
“Empower businesses and organizations to take control of their online security and protect against cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 | ||||
“We provide IT managed services, computer security consulting and other associated services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 | ||||
“3|Strategy helps organizations get ready for cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2 | ||||
“Team of high qualified professionals focused on Excellence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 | ||||
“A TakeMore é uma empresa de consultoria em TI e Cibersegurança, especializada na concepção, implementação e gestão de sistemas de informação, soluções de produção e…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 | ||||
“A nossa missão é proteger o seu negócio e garantir que seus dados estejam sempre seguros.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 | ||||
“A "UbiXploit - Information Assurance Technologies, Lda." é uma empresa Tecnológica que centra a sua actividade no combate ao Cibercrime.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | Zaltor Cloud SolutionsPartial evidence | 1 | |||
“Managed Services | Monitorização | Ciber-segurança | Backup |” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 | ||||
“Delivery of affordable, expedite and world-class cyber security services to demanding corporate customers throughout their business life cycle.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | UP & RunningIndirect evidence | 1 | |||
“Equipa de profissionais certificados na implementação de sistemas de Cibersegurança, com experiência comprovada em empresas do sector público e privado.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | CybersaberPartial evidence | 1 | |||
“We provide an immersive security awareness training experience, coupled with cutting-edge phishing simulations specifically designed to strengthen your learning programs and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 | ||||
“Na Admin4TI, acreditamos que a tecnologia deve ser um pilar estratégico para o crescimento e eficiência das empresas.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 23 of 61 managed security service providers based in Portugal
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Managed security service providers based in Portugal at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 managed security service providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Portugal whose own description of what they do matches “managed security service providers”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among managed security service providers, 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 an evidence 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, 272 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 5, 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
How many managed security service providers are there based in Portugal?
RevenueBase identified 61 managed security service providers 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?
Securnet, headquartered in Ermesinde, tops this list with the largest team on record.
Which city has the most managed security service providers?
Lisbon leads with 11 headquartered companies, followed by Lisboa (9) 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 272 verified decision-maker contacts tracked across these 61 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 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.
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