Company lists · Data verified August 2026

Top 23 Application security testing companies based in Sao Paulo, Brazil

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 51 companies tracked

There are 51 application security testing companies headquartered in Sao Paulo, Brazil (RevenueBase, August 2026). RevenueBase tracks 378 professional contacts across them, including 109 with verified work emails and 6 with mobile numbers. Sao Paulo is the largest hub.

This list covers application security testing 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. Data current as of August 28, 2026.

51Companies

378Contacts tracked

109Verified emails

6Mobile numbers

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The 23 largest application security testing companies based in Sao Paulo, Brazil

Ranked by team size

Top 23 of 51 application security testing companies based in Sao Paulo, Brazil, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	OL Tecnologia	Sao Paulo	51-200	68	23
2	Berghem	Sao Paulo	51-200	54	21
3	Desec Security	Sao Paulo	n/a	36	8
4	Esecurity	Sao Paulo	11-50	18	4
5	Abctec	Sao Paulo	11-50	15	2
6	Cherokee	Sao Paulo	11-50	14	3
7	Vertros Technology And Security	Sao Paulo	11-50	13	5
8	RESH	Sao Paulo	11-50	13	4
9	Ksecurity	Sao Paulo	11-50	12	5
10	Resolvesec	Sao Paulo	11-50	11	4
11	Secure Tecnologia	Sao Paulo	11-50	10	5
12	Brztec	Sao Paulo	1-10	10	4
13	BR Flecha Cybersecurity	Sao Paulo	51-200	7	3
14	Virtuaworks Cibersegurança	Sao Paulo	11-50	7	2
15	Sunlit Technologies	Sao Paulo	1-10	7	1
16	Secureonebr	Sao Paulo	11-50	6	4
17	Vantico	Sao Paulo	11-50	6	3
18	Leonnes Cybersecurity	Sao Paulo	11-50	6	1
19	Elytron Security S.A	Sao Paulo	51-200	4	1
20	Infoera	Sao Paulo	1-10	3	2
21	BYBND	Sao Paulo	1-10	3	2
22	Guard Ocean	Sao Paulo	1-10	2	1
23	Hive SEC Consultoria	Sao Paulo	1-10	2	1

Showing 23 of 51 application security testing companies based in Sao Paulo, Brazil

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Application security testing companies based in Sao Paulo, Brazil at a glance

As of Aug 28, 2026

1-10Median size (employees)

Sao PauloLargest hub · 51 HQs

6Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Application security testing companies by metro in Brazil

Metro	Companies
Application security testing companies in Sao Paulo	51
Application security testing companies in Rio De Janeiro	10
Application security testing companies in Belo Horizonte	8
Application security testing companies in Curitiba	6
Application security testing companies in Recife	4
Application security testing companies in Barueri	4
Application security testing companies in Sao Bernardo Do Campo	3
Application security testing companies in Florianopolis	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “application security testing companies”, with match quality audited by blind human judging, and headquartered in Sao Paulo, Brazil.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 51 application security testing companies headquartered in Sao Paulo, Brazil as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most application security testing companies?

Sao Paulo leads with 51 headquartered companies, followed by Rio De Janeiro (10) and Belo Horizonte (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 109 verified decision-maker contacts tracked across these 51 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.