Company lists · Data refreshed September 2026

Top 23 IT security consulting firms based in Sao Paulo, Brazil

Name: IT security consulting firms 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 332 companies tracked

RevenueBase identified 332 IT security consulting firms headquartered in Sao Paulo, Brazil as of September 2026 and tracks 3,933 professional contacts across them, including 1,193 with verified work emails. Sao Paulo is the largest hub.

This list covers IT security consulting firms 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

332Companies

3,933Contacts tracked

1,193Verified emails

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The 23 largest IT security consulting firms based in Sao Paulo, Brazil

Ranked by team size

Top 23 of 332 IT security consulting firms 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 consulting firms: 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	ACERTIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	332
	“A Acert é uma assessoria e consultoria especializada em prevenir e solucionar perdas financeiras advindas de processos inadequados ou fraudulentos.” Source: company website · checked Sep 4, 2026
2	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
3	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
4	VitaraIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	98
	“Empresa inovadora que realiza trabalhos de consultoria em Segurança da Informação e implementa soluções baseadas em produtos desenvolvidos pelos maiores fabricantes mundiais de…” Source: company website · checked Sep 4, 2026
5	AlleasyIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	87
	“Presente no mercado desde 1995, a Alleasy oferece nacionalmente serviços especializados em Segurança de Tecnologia da Informação, além de Alocação de Recursos e Hunting para a…” Source: company website · checked Sep 4, 2026
6	VultusIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	79
	“We are the only consultech in Brazil to combine global elite ethical hackers and Falconi-certified business consultants, delivering integrated approaches and systemic solutions.” Source: company website · checked Sep 4, 2026
7	SecurityfirstIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	77
	“Consultoria especializada em:_Cybersecurity O SOC mais inovador do Brasil!” Source: company website · checked Sep 4, 2026
8	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
9	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
10	AuditsafeIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	56
	“As atividades da AuditSafe foram iniciadas em setembro de 2005, por seu sócio-fundador Fernando Nicolau F.” Source: company website · checked Sep 4, 2026
11	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
12	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
13	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
14	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
15	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
16	FT ConsultIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	42
	“Como está o suporte tecnológico da sua empresa?” Source: company website · checked Sep 4, 2026
17	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
18	Brasiliano InteriskIndirect evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	36
	“Iniciamos as atividades em 1988, com os serviços de consultoria e treinamento na área de segurança empresarial.” Source: company website · checked Sep 4, 2026
19	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
20	Mastery ConsultingPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	33
	“A Mastery Consulting é uma empresa de consultoria, integradora multivendor, especializada em serviços e soluções de infraestrutura de Datacenter, que atua no mercado corporativo…” Source: company website · checked Sep 4, 2026
21	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
22	DuraniumPartial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	11-50	33
	“We are a cybersecurity and privacy consultancy startup based in Brazil, leveraging over 30 years of our founder’s experience to deliver high-quality security and privacy…” Source: company website · checked Sep 4, 2026
23	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

Showing 23 of 332 IT security consulting firms based in Sao Paulo, Brazil

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IT security consulting firms based in Sao Paulo, Brazil at a glance

As of Sep 4, 2026

1-10Median size (employees)

Sao PauloLargest hub · 332 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

178

11-50

109

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 332 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 consulting firms, 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 consulting firms”. 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 consulting firms, 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, 1,193 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 consulting firms by metro in Brazil

IT security consulting firms in Sao Paulo332
IT security consulting firms in Rio De Janeiro75
IT security consulting firms in Belo Horizonte41
IT security consulting firms in Brasilia36
IT security consulting firms in Curitiba34
IT security consulting firms in Porto Alegre27

Frequently asked

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

RevenueBase identified 332 IT security consulting firms 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?

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

Which city has the most IT security consulting firms?

Sao Paulo leads with 332 headquartered companies, followed by Rio De Janeiro (75) and Belo Horizonte (41).

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 1,193 verified decision-maker contacts tracked across these 332 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.