Company lists · Data refreshed November 2026

Top 25 Protective intelligence firms worldwide

Name: Protective intelligence firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 9,288 companies tracked

RevenueBase identified 9,288 company matches for protective intelligence firms worldwide as of November 2026 and tracks 209,317 professional contacts across them, including 20,026 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for protective intelligence firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for protective intelligence firms follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

9,288Companies

209,317Contacts tracked

20,026Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest protective intelligence firms worldwide

Ranked by team size

Top 25 of 9,288 company matches for protective intelligence firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Securitas Security Services Usa, INC	Exact match	Parsippany, MI, United StatesHQ recorded Nov 6, 2026	10001+	40,551 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Segurpro	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	10001+	5,254 contacts →
	Exact match “A SegurPro é o próximo passo em segurança privada.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 6, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	SSI	Exact match	United KingdomHQ recorded Nov 6, 2026	n/a	3,204 contacts →
	Exact match “Specialist Security Company offering worldwide protection services to a niche` market of VIP's and travelling executives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Securitas Sverige AB	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	5,001-10,000	3,053 contacts →
	Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Security Industry Specialists	Exact match	Culver City, NY, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,579 contacts →
	Exact match “The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Crisis24	Exact match	Annapolis, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,207 contacts →
	Exact match “Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 2026	10001+	1,928 contacts →
	Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Grupo Belfort	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	5,001-10,000	1,839 contacts →
	Exact match “Fundada em 1990, o Grupo Belfort foi criado para oferecer soluções integradas de proteção e segurança.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	1,562 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	First Security Group LLC	Exact match	Dubai, United Arab EmiratesHQ recorded Nov 6, 2026	5,001-10,000	1,465 contacts →
	Exact match “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Imvula Quality Protection	Exact match	Woodmead, South AfricaHQ recorded Nov 6, 2026	10001+	1,460 contacts →
	Exact match “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Nov 6, 2026	10001+	1,216 contacts →
	Exact match “Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	SOS Security LLC	Exact match	Parsippany, VA, United StatesHQ recorded Nov 6, 2026	10001+	1,203 contacts →
	Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Brosnan Risk Consultants	Exact match	Pearl River, CA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,080 contacts →
	Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Engefort	Exact match	BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,064 contacts →
	Exact match “A ENGEFORT tem a missão de prestar serviços de vigilância patrimonial, escolta de veículos, proteção VIP a executivos, artistas e autoridades.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	First Coast Security	Exact match	Jacksonville, FL, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,052 contacts →
	Exact match “As an established mid-market company, clients throughout the country entrust us as the best-qualified firm to protect their highest-value assets – while delivering the quality…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Miro Seguridad Ltda	Exact match	Medellín, ColombiaHQ recorded Nov 6, 2026	5,001-10,000	1,014 contacts →
	Exact match “Somos una empresa de vigilancia y seguridad privada con más de 42 años de experiencia, generando tranquilidad y bienestar desde la calidad de nuestros servicios, con propuestas…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Zerofox	Exact match	Baltimore, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	905 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	AEGIS	Exact match	United StatesHQ recorded Nov 6, 2026	1,001-5,000	839 contacts →
	Exact match “AEGIS is a London based, privately owned, British security and risk management company with overseas offices in Afghanistan, Bahrain, Iraq and the USA.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Brasfort	Exact match	Brasilia, BrazilHQ recorded Nov 6, 2026	5,001-10,000	835 contacts →
	Exact match “Segurança Patrimonial Terceirização de mão de obra” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	PSU	Exact match	Beijing, ChinaHQ recorded Nov 6, 2026	n/a	823 contacts →
	Exact match “Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Amalgamated Security Services Limited	Exact match	Tunapuna, Trinidad and TobagoHQ recorded Nov 6, 2026	1,001-5,000	779 contacts →
	Exact match “Established in 1983 and incorporated in 1986, Amalgamated Security Services Limited is a reputable company that provides a variety of security services to its clientele which…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Northeast Security INC	Exact match	Westwood, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	767 contacts →
	Exact match “Improving Security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Palamerican Security	Exact match	St. Petersburg, CA, United StatesHQ recorded Nov 6, 2026	10001+	725 contacts →
	Exact match “PalAmerican Security is an industry-leading security provider, delivering customized programs across 44 states and employees.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “protective intelligence firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,288 protective intelligence firms worldwide

See the full list, filter by size, metro and specialty, and access 20,026 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Protective intelligence firms worldwide at a glance

As of Nov 6, 2026

9.6%Verified-email coverage

22.5Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,929

11-50

2,733

51-200

1,439

201-500

527

501-1,000

255

1,001-5,000

243

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for protective intelligence firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “protective intelligence firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 20,026 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Protective intelligence firms by location

44 lists · largest first

Every Protective intelligence firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “protective intelligence firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many protective intelligence firms are there worldwide?

RevenueBase identified 9,288 company matches for protective intelligence firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Securitas Security Services Usa, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most protective intelligence firms?

The United States leads with 2,808 companies, followed by the United Kingdom (785) and France (340). Every protective intelligence firms list by country and city is linked on this page.

Which city has the most protective intelligence firms?

London leads with 366 company records, followed by New York (129) and Paris (90).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 20,026 professional contacts with verified work emails tracked across these 9,288 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 9,288 protective intelligence firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.