Company lists · Data refreshed September 2026

Top 25 24/7 security monitoring services based in Brazil

Name: 24/7 security monitoring services based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 699 companies tracked

RevenueBase identified 699 24/7 security monitoring services headquartered in Brazil as of September 2026 and tracks 10,674 professional contacts across them, including 558 with verified work emails. Sao Paulo is the largest hub.

This list covers 24/7 security monitoring services 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 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

699Companies

10,674Contacts tracked

558Verified emails

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The 25 largest 24/7 security monitoring services based in Brazil

Ranked by team size

Top 25 of 699 24/7 security monitoring services based in Brazil, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to 24/7 security monitoring services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Grupo Khronos	Indirect evidence	São José, BrazilHQ checked Sep 27, 2026	1,001-5,000	617 contacts →
	Indirect evidence “O Grupo Khronos é referência nacional em soluções integradas de segurança, tecnologia e IoT.” Source: RevenueBase Database · checked Sep 27, 2026
2	Grupo Macor	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	1,001-5,000	338 contacts →
	Indirect evidence “Desde 1995, sua segurança é a nossa missão.” Source: RevenueBase Database · checked Sep 27, 2026
3	Embraps	Indirect evidence	Santos, BrazilHQ checked Sep 27, 2026	1,001-5,000	321 contacts →
	Indirect evidence “A empresa oferece profissionais qualificados para diversas funções, entre elas, portaria e/ou controlador de acesso, auxiliar de serviços gerais, zeladoria, atendente, auxiliar…” Source: RevenueBase Database · checked Sep 27, 2026
4	Grupo SEI Segurança E Inteligência	Indirect evidence	Serra, BrazilHQ checked Sep 27, 2026	1,001-5,000	285 contacts →
	Indirect evidence “Grupo SEI - is a facilities services company based out of Brazil.” Source: RevenueBase Database · checked Sep 27, 2026
5	Autodefesa Brasil	Indirect evidence	Campinas, BrazilHQ checked Sep 27, 2026	201-500	171 contacts →
	Indirect evidence “Referência nacional em gestão e tecnologia de segurança, a AutoDefesa Brasil Atua com uma abordagem 360°, oferecendo soluções inovadoras que vão desde a concepção até a…” Source: RevenueBase Database · checked Sep 27, 2026
6	Atende Portaria	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	11-50	137 contacts →
	Indirect evidence “Atende Portaria é uma Central de Portaria Remota e de Monitoramento de Alarmes e Imagens com atuação em diversos estados do Brasil, através de franquias.” Source: RevenueBase Database · checked Sep 27, 2026
7	Sekron Digital Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	51-200	120 contacts →
	Indirect evidence “A Sekron Digital é uma das principais empresas de segurança eletrônica e monitoramento corporativo do Brasil, com atuação nacional e mais de 30 anos de experiência na proteção de…” Source: RevenueBase Database · checked Sep 27, 2026
8	NTS - Segurança	Indirect evidence	Natal, BrazilHQ checked Sep 27, 2026	201-500	119 contacts →
	Indirect evidence “Empresa de Segurança Eletrônica, Monitoramento, Rastreamento, Portaria Remota e facilites.” Source: RevenueBase Database · checked Sep 27, 2026
9	Grupo Força Tarefa	Indirect evidence	Uberlândia, BrazilHQ checked Sep 27, 2026	51-200	114 contacts →
	Indirect evidence “O Grupo Força Tarefa desenvolve soluções personalizadas de segurança patrimonial, atuando com os serviços de vigilância armada, portaria, portaria virtual e monitoramento de…” Source: RevenueBase Database · checked Sep 27, 2026
10	Grupo Hawk	Strong evidence	Rio De Janeiro, BrazilHQ checked Sep 27, 2026	501-1,000	110 contacts →
	Strong evidence “A company specialized in Property Surveillance, Electronic Monitoring, Risk Analysis, Security Projects, and Facilities Services for a wide range of institutions, commercial…” Source: RevenueBase Database · checked Sep 27, 2026
11	High Link	Indirect evidence	São José, BrazilHQ checked Sep 27, 2026	51-200	93 contacts →
	Indirect evidence “A High Link é uma empresa de segurança especializada em sistemas eletrônicos integrados.” Source: RevenueBase Database · checked Sep 27, 2026
12	Intersept-Porteiros Vigilantes Limpeza E Conservacao	Indirect evidence	Curitiba, BrazilHQ checked Sep 27, 2026	51-200	92 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
13	Peter Graber Tecnologia EM Segurança	Indirect evidence	São Paulo, BrazilHQ checked Sep 27, 2026	51-200	91 contacts →
	Indirect evidence “Uma empresa com foco em liderar pela excelência em serviços.” Source: RevenueBase Database · checked Sep 27, 2026
14	Protesul Vigilancia Caxiense Ltda	Partial evidence	Caxias Do Sul, BrazilHQ checked Sep 27, 2026	501-1,000	86 contacts →
	Partial evidence “A Protesul garante a certeza de segurança e o perfeito funcionamento do sistema integrado de proteção 24 horas por dia, todos os dias do ano.” Source: RevenueBase Database · checked Sep 27, 2026
15	Gentt Segurança E Facilities	Indirect evidence	São Paulo, BrazilHQ checked Sep 27, 2026	501-1,000	83 contacts →
	Indirect evidence “Nascemos com a missão de proporcionar a integração harmoniosa entre seres humanos e tecnologia, a fim de oferecer soluções abrangentes para a proteção de pessoas e patrimônios.” Source: RevenueBase Database · checked Sep 27, 2026
16	Alert System	Indirect evidence	Santo Amaro, BrazilHQ checked Sep 27, 2026	51-200	71 contacts →
	Indirect evidence “Fundada em a Alert é uma empresa de tecnologia da segurança que oferece soluções completas, personalizadas e de última geração capazes de aumentar a proteção em indústrias…” Source: RevenueBase Database · checked Sep 27, 2026
17	Radcom Alarmes	Partial evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	51-200	71 contacts →
	Partial evidence “Radcom Alarmes, Monitoramento de Alarmes e Imagens 24 horas.” Source: RevenueBase Database · checked Sep 27, 2026
18	OL Tecnologia	Partial evidence	São Paulo, BrazilHQ checked Sep 27, 2026	51-200	70 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
19	Golden Service	Indirect evidence	Teresópolis, BrazilHQ checked Sep 27, 2026	51-200	61 contacts →
	Indirect evidence “Desde sua fundação em 1987 a GS se especializou em Sistemas de Segurança.” Source: RevenueBase Database · checked Sep 27, 2026
20	ADS Seguranca Privada	Partial evidence	Natal, BrazilHQ checked Sep 27, 2026	51-200	60 contacts →
	Partial evidence “Ads Seguranca Privada is a security and investigations company based out of Av Capitao-Mor Gouveia, 5517, Natal, Rio Grande Do Norte, Brazil.” Source: RevenueBase Database · checked Sep 27, 2026
21	Alarm Center	Partial evidence	Vitória, BrazilHQ checked Sep 27, 2026	51-200	58 contacts →
	Partial evidence “São mais de 20 anos de mercado, com investimentos constantes em tecnologia e estrutura, maior número de viaturas nas ruas e equipe de monitoramento vigilante 24 horas.” Source: RevenueBase Database · checked Sep 27, 2026
22	Vigillare Sistemas DE Monitoramento	Partial evidence	Santa Maria, BrazilHQ checked Sep 27, 2026	201-500	56 contacts →
	Partial evidence “Há 28 anos a Vigillare presta serviços de segurança através de monitoramento, rastreamento, vídeo monitoramento, com suporte operacional 24 horas por dia, contando com uma equipe…” Source: RevenueBase Database · checked Sep 27, 2026
23	Vigzul	Indirect evidence	Campinas, BrazilHQ checked Sep 27, 2026	51-200	47 contacts →
	Indirect evidence “Quanto vale a sua liberdade?” Source: RevenueBase Database · checked Sep 27, 2026
24	Alltech Segurança	Indirect evidence	Fortaleza, BrazilHQ checked Sep 27, 2026	51-200	40 contacts →
	Indirect evidence “Somos uma empresa do ramo de segurança.” Source: RevenueBase Database · checked Sep 27, 2026
25	Qualiport Torre DE Monitoramento Portaria Remota	Indirect evidence	Recife, BrazilHQ checked Sep 27, 2026	51-200	38 contacts →
	Indirect evidence “Somos um grupo genuinamente Pernambucano, pioneiro e líder em Torres de Monitoramento e Portaria Remota.” Source: RevenueBase Database · checked Sep 27, 2026

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: 24/7 security monitoring services. 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 24/7 security monitoring services.
Partial evidence: Its own public description names part of 24/7 security monitoring services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 24/7 security monitoring services. 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 699 24/7 security monitoring services based in Brazil

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24/7 security monitoring services based in Brazil at a glance

As of Sep 27, 2026

5.2%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

16.3%Largest-city concentration · Sao Paulo

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

279

11-50

252

51-200

119

201-500

501-1,000

1,001-5,000

5,001-10,000

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 699 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 24/7 security monitoring services, 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 “24/7 security monitoring services”. 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 24/7 security monitoring services), 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 24/7 security monitoring services, 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, 558 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 27, 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.

24/7 security monitoring services by metro

24/7 security monitoring services in Sao Paulo114
24/7 security monitoring services in Curitiba29
24/7 security monitoring services in Rio De Janeiro25

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 24/7 security monitoring services, 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 24/7 security monitoring services are there based in Brazil?

RevenueBase identified 699 24/7 security monitoring services 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?

Grupo Khronos, headquartered in Sao Jose, tops this list with the largest team on record.

Which city has the most 24/7 security monitoring services?

Sao Paulo leads with 114 headquartered companies, followed by Curitiba (29) and Rio De Janeiro (25).

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 558 verified decision-maker contacts tracked across these 699 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 27, 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 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.