Company lists · Data refreshed September 2026
Top 25 Information security companies based in Portugal
RevenueBase identified 80 information security companies headquartered in Portugal as of September 2026 and tracks 950 professional contacts across them, including 373 with verified work emails and 49 with mobile numbers. Lisboa is the largest hub.
This list covers information security companies 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 3, 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 25 largest information security companies based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 134 | ||||
“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 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 105 | ||||
“A VisionWare é uma empresa 100% portuguesa, fundada em 2005 e altamente especializada em Segurança de Informação: Cibersegurança, TI, investigação forense, compliance, privacidade…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 98 | ||||
“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 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 70 | ||||
“At ORBCOM, we are passionate about technology and innovation.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 55 | ||||
“CyberSafe is a Portuguese company focused on cybersecurity.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 44 | ||||
“DefensePoint builds secure software and delivers cybersecurity services for regulated industries - defense, finance, healthcare, and energy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 43 | ||||
“Chief Security Officers it's a company of the group Art of Knowledge, specialized in the field of information security.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 25 | ||||
“Your partner for IT managed services and cybersecurity.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 | ||||
“Rolling Space is an IT company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 12 | ||||
“Empresa Especializada em Cibersegurança, Proteção de Dados e Integração de Tecnologias - Cyber Security as a Service (CSaaS)” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 | ||||
“We are consulting services company specialising in cyber security with a focus on Application Security & GRC.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | MGVSIIndirect evidence | 9 | |||
“We focus on implementing IT Solutions tailored to the needs of our customers.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“Empower businesses and organizations to take control of their online security and protect against cyber threats.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 | ||||
“We provide IT managed services, computer security consulting and other associated services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 | ||||
“3|Strategy helps organizations get ready for cyber threats.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 | ||||
“Sysvalue is specialized in consulting, integration and security services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 | ||||
“Team of high qualified professionals focused on Excellence.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“A nossa missão é proteger o seu negócio e garantir que seus dados estejam sempre seguros.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | Zaltor Cloud SolutionsIndirect evidence | 1 | |||
“Managed Services | Monitorização | Ciber-segurança | Backup |” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 80 information security companies based in Portugal
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Information security companies based in Portugal at a glance
As of Sep 3, 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 information security companies, 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 “information security companies”. 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 information security companies, 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, 373 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 3, 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 information security companies are there based in Portugal?
RevenueBase identified 80 information security companies 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 Lisboa, tops this list with the largest team on record.
Which city has the most information security companies?
Lisboa leads with 15 headquartered companies, followed by Lisbon (11) and Porto (8).
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 373 verified decision-maker contacts tracked across these 80 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 3, 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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