Company lists · Data refreshed September 2026

Top 23 IT security companies based in Sao Paulo, Brazil

Name: IT security companies based in Sao Paulo, Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 236 companies tracked

RevenueBase identified 236 IT security companies headquartered in Sao Paulo, Brazil as of September 2026 and tracks 3,211 professional contacts across them, including 1,023 with verified work emails. Sao Paulo is the largest hub.

This list covers IT security companies headquartered in Sao Paulo, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

236Companies

3,211Contacts tracked

1,023Verified emails

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The 23 largest IT security companies based in Sao Paulo, Brazil

Ranked by team size

Top 23 of 236 IT security companies based in Sao Paulo, Brazil, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Redbelt SecurityIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	214
	“O nosso trabalho é proteger o seu.” Source: company website · checked Sep 4, 2026
2	Stefanini CyberIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	501-1,000	197
	“Empresa líder em Serviços de Segurança Gerenciados (ISG Provider Lens), parte do ecossistema de cibersegurança do Grupo Stefanini.” Source: company website · checked Sep 4, 2026
3	Logical ITPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	150
	“A LOGICAL IT é uma empresa brasileira, que atua puramente no mercado de Segurança da Informação, auxiliando grandes, médias e pequenas empresas a tornarem-se mais seguras.” Source: company website · checked Sep 4, 2026
4	CG ONEIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	119
	“Somos a CG One, a evolução da marca Compugraf.” Source: company website · checked Sep 4, 2026
5	EVALIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	87
	“Eval is a technology company that specializes in eletronica signatures, authentication, data protection and artificial intelligence.” Source: company website · checked Sep 4, 2026
6	OL TecnologiaPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	68
	“Com mais de duas décadas de atuação, a OL Tecnologia se consolida como líder em Segurança da Informação, Cloud Security e Monitoramento, oferecendo um portfólio robusto de…” Source: company website · checked Sep 4, 2026
7	Netsafe CorpIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	59
	“Com mais de 25 anos de mercado, a NetSafe Corp é especialista em segurança da informação.” Source: company website · checked Sep 4, 2026
8	DfenseIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	55
	“Segurança não é só blindagem, é confiança que acelera o negócio.” Source: company website · checked Sep 4, 2026
9	BerghemIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	54
	“Há mais de duas décadas, somos mais do que uma provedora de segurança cibernética, e sim a força estratégica na proteção de ambientes críticos e no aumento da maturidade em…” Source: company website · checked Sep 4, 2026
10	Cylk TechnologingIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	49
	“A CYLK Technologing se dedica àqueles profissionais e empresas que estão sempre se aperfeiçoando, que buscam soluções de TI criativas e inovadoras para reduzir custos, mitigar…” Source: company website · checked Sep 4, 2026
11	Defcon1Indirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	48
	“A Defcon1 é uma empresa que tem o compromisso de entregar os mais modernos conceitos e soluções de segurança e proteção de dados oferecidos pelas melhores tecnologias do mercado…” Source: company website · checked Sep 4, 2026
12	Flipside Smart Content ProviderPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	46
	“Information Security training provider specialized in personalized trainings, security awareness campaigns and insightful presentations for big corporations.” Source: company website · checked Sep 4, 2026
13	Next4sec Security IntelligenceIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	43
	“Cyber threats grow in an advanced and strategic way every day, resulting in great risks for businesses.” Source: company website · checked Sep 4, 2026
14	Jc2secIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	41
	“HISTÓRIA A JC2SEC nasceu com a missão de prover soluções de segurança da informação para ambientes corporativos.” Source: company website · checked Sep 4, 2026
15	Beytech IT SolutionsPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	40
	“Beytech IT Solutions, Inovação, Segurança e Resultados Reais para sua Empresa Somos especialistas em soluções gerenciadas de Tecnologia da Informação, atuando de forma…” Source: company website · checked Sep 4, 2026
16	It4us Cyber SecurityPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	34
	“A It4us Cyber Security atua no mercado corporativo e possui uma trajetória de Sucesso na monitoração ativa de nossos clientes, com seu profissionalismo, qualidade e principalmente…” Source: company website · checked Sep 4, 2026
17	YOU IT TecnologiaPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	33
	“Com mais de 13 anos de trajetória, a You IT é referência nacional em infraestrutura de tecnologia segura e soluções avançadas de cibersegurança.” Source: company website · checked Sep 4, 2026
18	Aiqon The Brazilian Cyber HUBIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	31
	“AIQON is committed to delivering efficient and cost-effective solutions for its clients.” Source: company website · checked Sep 4, 2026
19	Full Service Soluções Completas EM TecnologiaIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	31
	“Empresa Especialistas em CyberSecurity.” Source: company website · checked Sep 4, 2026
20	Athena Security LtdaPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	28
	“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: company website · checked Sep 4, 2026
21	Diazero SecurityPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	27
	“A Diazero Security trouxe ao mercado brasileiro soluções em cibersegurança utilizando as mais inovadoras metodologias que englobam todos os possíveis vetores de ataque a uma…” Source: company website · checked Sep 4, 2026
22	Eset BrasilIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	501-1,000	24
	“Fundada em 1992, a ESET é uma companhia global de soluções de software de segurança que fornece proteção de última geração contra ameaças digitais.” Source: company website · checked Sep 4, 2026
23	Sempre SafeIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	23
	“Consultoria de tecnologia especializada em cybersecurity, alinhada com as melhores práticas de segurança e performance, com um time de especialistas certificados para oferecer…” Source: company website · checked Sep 4, 2026

Showing 23 of 236 IT security companies based in Sao Paulo, Brazil

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IT security companies based in Sao Paulo, Brazil at a glance

As of Sep 4, 2026

11-50Median size (employees)

Sao PauloLargest hub · 236 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

108

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Brazil list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Sao Paulo, over 236 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 IT 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 Sao Paulo, Brazil whose own description of what they do matches “IT 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 IT security companies, and records with no verified work email. Companies headquartered outside Sao Paulo 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, 1,023 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 4, 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.

IT security companies by metro in Brazil

IT security companies in Sao Paulo236
IT security companies in Rio De Janeiro55
IT security companies in Brasilia31
IT security companies in Belo Horizonte27

Frequently asked

How many IT security companies are there based in Sao Paulo, Brazil?

RevenueBase identified 236 IT security companies headquartered in Sao Paulo, 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?

Redbelt Security, headquartered in Sao Paulo, tops this list with the largest team on record.

Which city has the most IT security companies?

Sao Paulo leads with 236 headquartered companies, followed by Rio De Janeiro (55) and Brasilia (31).

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 1,023 verified decision-maker contacts tracked across these 236 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 4, 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.