Company lists · Data refreshed September 2026
Top 25 Cybersecurity firms based in Portugal
RevenueBase identified 110 cybersecurity firms headquartered in Portugal as of September 2026 and tracks 3,248 professional contacts across them, including 1,661 with verified work emails and 354 with mobile numbers. Lisboa is the largest hub.
This list covers cybersecurity 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 1, 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 cybersecurity firms based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,881 contacts → | ||||
Indirect evidence “N-able’s mission is to protect businesses against evolving cyberthreats with a unified cyber resiliency platform to manage, secure, and recover.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 2 | 134 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 3 | 115 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 1, 2026Thanks. The Data Team will review it. | |||||
| 5 | 98 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 1, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Strong evidence “CyberSafe is a Portuguese company focused on cybersecurity.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 7 | 44 contacts → | ||||
Strong evidence “DefensePoint builds secure software and delivers cybersecurity services for regulated industries - defense, finance, healthcare, and energy.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 8 | 43 contacts → | ||||
Indirect 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 1, 2026Thanks. The Data Team will review it. | |||||
| 9 | 41 contacts → | ||||
Indirect evidence “Security teams don't lack vulnerabilities.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 10 | 25 contacts → | ||||
Strong evidence “Your partner for IT managed services and cybersecurity.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 11 | 25 contacts → | ||||
Strong evidence “AnubisNetworks is an Email CyberSecurity company.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Indirect evidence “Rolling Space is an IT company.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Indirect evidence “Your Shield in the Authentication Realm” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “Empresa Especializada em Cibersegurança, Proteção de Dados e Integração de Tecnologias - Cyber Security as a Service (CSaaS)” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence “We are consulting services company specialising in cyber security with a focus on Application Security & GRC.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Indirect evidence “LockEM offers small and medium-sized businesses a robust cyber resilience solution that not only quickly restores operations after a cyberattack, but also ensures compliance with…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Indirect evidence “We focus on implementing IT Solutions tailored to the needs of our customers.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Indirect evidence “CyberX - The Ethical Hacking Services, a top Portuguese company specializing in security audits, offers services including Penetration Testing (pentest), Code Analysis (SAST)…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Indirect evidence “Established in 2018 as a spinoff of ITSector, SecuritySide is a Portuguese firm founded by a seasoned group of fintech specialists.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 contacts → | ||||
Indirect evidence “A Cyber Risk Management and Quantification company, helping mid to large businesses improve security, compliance and operational resilience” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Strong evidence “For over 16 years, Vicxer has been a global cybersecurity leader dedicated solely to protecting SAP environments.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “O CESICP [Centro de Estudos em Segurança de Informação, Cibersegurança e Privacidade] integra na sua estrutura um observatório que visa implementar e manter um sistema de recolha…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Strong evidence “Somos uma empresa de tecnologias da informação especializada na área de Cybersecurity Awareness e pretendemos ocupar o nosso espaço neste mercado como a primeira empresa dedicada…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “Tornar a digitalização e a cibersegurança acessíveis a todos, independentemente da dimensão da organização, através de soluções simples, eficazes e confiáveis, permitindo que…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “Empower businesses and organizations to take control of their online security and protect against cyber threats.” Source: RevenueBase Database · checked Sep 1, 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: cybersecurity 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 cybersecurity firms.
- Partial evidence
- Its own public description names part of cybersecurity firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cybersecurity 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 110 cybersecurity firms based in Portugal
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Cybersecurity firms based in Portugal at a glance
As of Sep 1, 2026Companies by employee count
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 cybersecurity 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 “cybersecurity 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 cybersecurity 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 cybersecurity 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, 1,661 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 1, 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 cybersecurity 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 cybersecurity firms are there based in Portugal?
RevenueBase identified 110 cybersecurity 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?
N-Able, headquartered in Lisboa, tops this list with the largest team on record.
Which city has the most cybersecurity firms?
Lisboa leads with 19 headquartered companies, followed by Porto (15) and Lisbon (15).
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 1,661 verified decision-maker contacts tracked across these 110 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 1, 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.