Company lists · Data refreshed September 2026
Top 25 Telecom security consulting firms based in Brazil
RevenueBase identified 571 telecom security consulting firms headquartered in Brazil as of September 2026 and tracks 4,730 professional contacts across them, including 844 with verified work emails. Sao Paulo is the largest hub.
This list covers telecom security consulting firms headquartered in Brazil, 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 telecom security consulting firms based in Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 224 contacts → | ||||
Partial evidence “Com 35 anos de atuação, a Método Telecom consolidou uma trajetória marcada pela especialização em soluções de comunicação corporativa.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 215 contacts → | ||||
Indirect evidence “O nosso trabalho é proteger o seu.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 180 contacts → | ||||
Indirect evidence “A Abix é especializada em aluguel, venda e projeto de sistemas de radiocomunicação, monitoramento por câmeras de segurança (CFTV) e transmissão de dados sem fio.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 127 contacts → | ||||
Indirect evidence “Inspirar confiança é a meta que guia todas as nossas ações.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 107 contacts → | ||||
Indirect evidence “A ZivaSec,faz parte do Grupo NTSec e já conta com quinze anos de atuação no mercado, tem o objetivo de atuar com excelência em consultoria, implementação e gerenciamento de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 106 contacts → | ||||
Partial evidence “A ICTS Security é reconhecida a quase 3 décadas pela excelência em consultoria de serviços de inteligência e segurança.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 92 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 63 contacts → | ||||
Partial evidence “Soluções Inteligentes em Segurança e Telecomunicações para empreendimentos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 58 contacts → | ||||
Indirect evidence “Fundada em 2003, com sede em Brasília/DF e presente em todo território nacional, a FastHelp oferece soluções líderes de mercado no segmento de Segurança da Informação e…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 51 contacts → | ||||
Indirect evidence “A VIWSEC foi fundada em para proteção de serviços corporativos e de e-commerce no início da Internet empresarial no Brasil.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 50 contacts → | ||||
Partial evidence “A SEMAX - Segurança Máxima com mais de 20 anos de experiência nos segmentos de telecomunicações e segurança eletrônica.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 39 contacts → | ||||
Indirect evidence “HISTÓRIA A JC2SEC nasceu com a missão de prover soluções de segurança da informação para ambientes corporativos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 contacts → | ||||
Indirect evidence “A Gruppen oferece ao mercado as melhores soluções de segurança, dos mais renomados fabricantes globais.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Indirect evidence “Há 13 anos a GuardCenter governa operações de proteção de cargas em todo o Brasil: conecta cada viagem a fornecedores homologados, coordena a execução em tempo real e devolve ao…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 34 contacts → | ||||
Partial evidence “Há mais de três décadas, nossos valores éticos e respeitosos nos guiam enquanto entregamos serviços e soluções confiáveis em TI e Telecom.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 contacts → | ||||
Partial evidence “Somos uma empresa especializada em consultoria técnica em Tecnologias da Informação e Comunicação (TICs), engenharia consultiva e segurança digital.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 29 contacts → | ||||
Partial evidence “A Athena Security é uma empresa de consultoria especializada em segurança da informação, onde apoiamos nossos clientes na gestão de infraestrutura e segurança dos dados para…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 29 contacts → | ||||
Indirect evidence “A Safenet Tecnologia é referência no mercado de segurança eletrônica.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 27 contacts → | ||||
Indirect evidence “Para materializar boas ideias e fazer história, é preciso mais que competência, é preciso ter valores.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 25 contacts → | ||||
Indirect evidence “A XLOGIC é a sua aliada em cibersegurança e oferece soluções completas e integradas - serviços, produtos e estratégia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 25 contacts → | ||||
Indirect evidence “A Hiseg Segurança presta serviços de Segurança Eletrônica, garantindo um atendimento de qualidade através de profissionais altamente capacitados.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 contacts → | ||||
Indirect evidence “A Protect Solutions é uma Consultoria de Segurança da Informação que se destaca por prover Soluções em Segurança, Infraestrutura de Redes e Comunicação de TI.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 23 contacts → | ||||
Indirect evidence “Smart Vision IT é uma empresa de serviços e soluções inovadoras em TI e segurança eletrônica, que oferece ao mercado redução dos custos e otimização dos resultados, através de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 contacts → | ||||
Indirect evidence “Consultoria de tecnologia especializada em cybersecurity, alinhada com as melhores práticas de segurança e performance, com um time de especialistas certificados para oferecer…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 22 contacts → | ||||
Partial evidence “A results-driven company, specialized in Information Security.” 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: telecom security consulting 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 telecom security consulting firms.
- Partial evidence
- Its own public description names part of telecom security consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name telecom security consulting 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 571 telecom security consulting firms based in Brazil
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Telecom security consulting firms based in Brazil at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 571 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 telecom security consulting 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 Brazil whose own description of what they do matches “telecom security consulting 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 telecom security consulting 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 telecom security consulting firms, and records with no verified work email. Companies headquartered outside Brazil 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, 844 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.
Telecom security consulting firms by metro
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 telecom security consulting 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 telecom security consulting firms are there based in Brazil?
RevenueBase identified 571 telecom security consulting firms headquartered in Brazil 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?
Método Telecom, headquartered in Belo Horizonte, tops this list with the largest team on record.
Which city has the most telecom security consulting firms?
Sao Paulo leads with 142 headquartered companies, followed by Rio De Janeiro (52) and Brasilia (18).
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 844 verified decision-maker contacts tracked across these 571 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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Telecom security consulting firms by geography
- Telecom security consulting firms based in Melbourne, Australia
- Telecom security consulting firms based in Sydney, Australia
- Telecom security consulting firms based in Rio De Janeiro, Brazil
- Telecom security consulting firms based in Sao Paulo, Brazil
- Telecom security consulting firms based in Ottawa, Canada
- Telecom security consulting firms based in Toronto, Canada
- Telecom security consulting firms based in Paris, France
- Telecom security consulting firms based in Bangalore, India
- Telecom security consulting firms based in Mumbai, India
- Telecom security consulting firms based in Pune, India
- Telecom security consulting firms based in Madrid, Spain
- Telecom security consulting firms based in Stockholm, Sweden
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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