Company lists · Data refreshed October 2026

Top 25 Corporate espionage defense companies worldwide

Name: Corporate espionage defense companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 12,087 companies tracked

RevenueBase identified 12,087 company matches for corporate espionage defense companies worldwide as of October 2026 and tracks 390,118 professional contacts across them, including 46,687 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for corporate espionage defense companies 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 October 10, 2026. Country and city lists for corporate espionage defense companies 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 Oct 10, 2026 How this list was built

12,087Companies

390,118Contacts tracked

46,687Verified emails

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The 25 largest corporate espionage defense companies worldwide

Ranked by team size

Top 25 of 12,087 company matches for corporate espionage defense companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	G4s	Exact match	London, United KingdomHQ recorded Oct 10, 2026	10001+	82,890 contacts →
	Exact match “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Securitas Security Services Usa, INC	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 10, 2026	10001+	39,436 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Private Sector	Exact match	United StatesHQ recorded Oct 10, 2026	n/a	12,822 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Securitas Group	Exact match	Stockholm, SwedenHQ recorded Oct 10, 2026	10001+	6,597 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Sophos	Exact match	Abingdon, United KingdomHQ recorded Oct 10, 2026	5,001-10,000	5,139 contacts →
	Exact match “Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Securitas France	Exact match	Issy-les-moulineaux, FranceHQ recorded Oct 10, 2026	10001+	3,996 contacts →
	Exact match “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Securitas Seguridad España	Exact match	Madrid, SpainHQ recorded Oct 10, 2026	10001+	3,831 contacts →
	Exact match “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	U.S. Security Associates, INC	Exact match	Roswell, GA, United StatesHQ recorded Oct 10, 2026	10001+	3,785 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Sicuritalia S.P.A	Exact match	Milan, ItalyHQ recorded Oct 10, 2026	10001+	3,431 contacts →
	Exact match “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Securitas Sverige AB	Exact match	Stockholm, SwedenHQ recorded Oct 10, 2026	5,001-10,000	2,983 contacts →
	Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,128 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 10, 2026	10001+	1,806 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 · Oct 10, 2026 · View company records in RevenueBase
13	Securitas Colombia	Exact match	Bogota, ColombiaHQ recorded Oct 10, 2026	5,001-10,000	1,585 contacts →
	Exact match “Securitas es reconocida como una multinacional líder mundial en seguridad.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Securitas Canada	Exact match	North York, ON, CanadaHQ recorded Oct 10, 2026	5,001-10,000	1,553 contacts →
	Exact match “Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Oct 10, 2026	10001+	1,485 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Comando G8	Exact match	São Paulo, BrazilHQ recorded Oct 10, 2026	5,001-10,000	1,454 contacts →
	Exact match “O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Oct 10, 2026	501-1,000	1,453 contacts →
	Exact match “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Securitas Belgium	Exact match	Diegem, BelgiumHQ recorded Oct 10, 2026	5,001-10,000	1,404 contacts →
	Exact match “See a different world.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Imvula Quality Protection	Exact match	Woodmead, South AfricaHQ recorded Oct 10, 2026	10001+	1,352 contacts →
	Exact match “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	1,328 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Banque Populaire Bourgogne Franche-Com	Exact match	Dijon, FranceHQ recorded Oct 10, 2026	1,001-5,000	1,281 contacts →
	Exact match “BANQUE POPULAIRE BOURGOGNE FRANCHE-COM is a Security and Investigations company located in 14 BOULEVARD DE LA TREMOUILLE, DIJON, Burgundy, France.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	SOS Security LLC	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 10, 2026	10001+	1,181 contacts →
	Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Oct 10, 2026	10001+	1,173 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 · Oct 10, 2026 · View company records in RevenueBase
24	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Oct 10, 2026	1,001-5,000	1,148 contacts →
	Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	St. Moritz Security Services, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 10, 2026	5,001-10,000	1,102 contacts →
	Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Oct 10, 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 “corporate espionage defense companies”. 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 12,087 corporate espionage defense companies worldwide

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Corporate espionage defense companies worldwide at a glance

As of Oct 10, 2026

12.0%Verified-email coverage

32.3Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · London

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

5,282

11-50

4,010

51-200

1,615

201-500

536

501-1,000

265

1,001-5,000

259

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 corporate espionage defense companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “corporate espionage defense companies” 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 46,687 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 October 10, 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.

Corporate espionage defense companies by location

79 lists · largest first

Every Corporate espionage defense companies 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 “corporate espionage defense companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many corporate espionage defense companies are there worldwide?

RevenueBase identified 12,087 company matches for corporate espionage defense companies worldwide as of October 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?

G4s tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most corporate espionage defense companies?

The United States leads with 2,738 companies, followed by India (737) and the United Kingdom (729). Every corporate espionage defense companies list by country and city is linked on this page.

Which city has the most corporate espionage defense companies?

London leads with 277 company records, followed by Sao Paulo (135) and Paris (105).

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 46,687 professional contacts with verified work emails tracked across these 12,087 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 October 10, 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.