Company lists · Data refreshed October 2026

Top 25 Security consulting companies worldwide

Name: Security consulting companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 19,265 companies tracked

RevenueBase identified 19,265 company matches for security consulting companies worldwide as of October 2026 and tracks 273,193 professional contacts across them, including 51,927 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for security consulting 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 1, 2026. Country and city lists for security consulting 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 1, 2026 How this list was built

19,265Companies

273,193Contacts tracked

51,927Verified emails

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The 25 largest security consulting companies worldwide

Ranked by team size

Top 25 of 19,265 company matches for security consulting companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Private Sector	Exact match	United StatesHQ recorded Oct 1, 2026	n/a	12,771 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Oct 1, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Securitas Seguridad España	Exact match	Madrid, SpainHQ recorded Oct 1, 2026	10001+	3,620 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 1, 2026 · View company records in RevenueBase
4	U.S. Security Associates, INC	Exact match	Roswell, GA, United StatesHQ recorded Oct 1, 2026	10001+	3,592 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Sicuritalia S.P.A	Exact match	Milan, ItalyHQ recorded Oct 1, 2026	10001+	3,387 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 1, 2026 · View company records in RevenueBase
6	Grupo GR	Exact match	São Paulo, BrazilHQ recorded Oct 1, 2026	10001+	2,772 contacts →
	Exact match “Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Security Industry Specialists	Exact match	Culver City, CA, United StatesHQ recorded Oct 1, 2026	5,001-10,000	2,500 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 · Oct 1, 2026 · View company records in RevenueBase
8	Paragon Security	Exact match	Toronto, ON, CanadaHQ recorded Oct 1, 2026	1,001-5,000	2,365 contacts →
	Exact match “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,222 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 1, 2026 · View company records in RevenueBase
10	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	10001+	1,949 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 1, 2026 · View company records in RevenueBase
11	Airbus Protect	Exact match	Blagnac, FranceHQ recorded Oct 1, 2026	1,001-5,000	1,431 contacts →
	Exact match “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Securitas Belgium	Exact match	Diegem, BelgiumHQ recorded Oct 1, 2026	5,001-10,000	1,419 contacts →
	Exact match “See a different world.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	World Security	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	1,001-5,000	1,398 contacts →
	Exact match “World Security being a Semi Govt Organization provides specialist turnkey security solutions to the local market and beyond, as well as the Dubai World Group.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Oct 1, 2026	501-1,000	1,378 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 1, 2026 · View company records in RevenueBase
15	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	10001+	1,375 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	First Security Group LLC	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	5,001-10,000	1,374 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 · Oct 1, 2026 · View company records in RevenueBase
17	Comando G8	Exact match	São Paulo, BrazilHQ recorded Oct 1, 2026	5,001-10,000	1,361 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 1, 2026 · View company records in RevenueBase
18	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,232 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 1, 2026 · View company records in RevenueBase
19	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,138 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 1, 2026 · View company records in RevenueBase
20	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Oct 1, 2026	10001+	1,081 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 1, 2026 · View company records in RevenueBase
21	St. Moritz Security Services, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 1, 2026	5,001-10,000	1,062 contacts →
	Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Brosnan Risk Consultants	Exact match	Pearl River, NY, United StatesHQ recorded Oct 1, 2026	5,001-10,000	1,050 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 · Oct 1, 2026 · View company records in RevenueBase
23	Seguritech	Exact match	Mexico City, MexicoHQ recorded Oct 1, 2026	1,001-5,000	1,041 contacts →
	Exact match “A lo largo de 30 años, hemos incursionado y evolucionado en distintas áreas atendiendo en el continente americano a clientes privados, corporativos y sector gobierno.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Onet Sécurité	Exact match	Marseille, FranceHQ recorded Oct 1, 2026	10001+	1,007 contacts →
	Exact match “La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Securitas Perú	Exact match	Magdalena Del Mar, PeruHQ recorded Oct 1, 2026	1,001-5,000	891 contacts →
	Exact match “Securitas es socio líder en soluciones de protección inteligente.” Recorded in the RevenueBase company graph · Oct 1, 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 “security consulting 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 19,265 security consulting companies worldwide

See the full list, filter by size, metro and specialty, and access 51,927 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security consulting companies worldwide at a glance

As of Oct 1, 2026

19.0%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

10,751

11-50

5,545

51-200

1,781

201-500

585

501-1,000

245

1,001-5,000

240

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 security consulting companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “security consulting 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 51,927 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 1, 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.

Security consulting companies by location

139 lists · largest first

Every Security consulting 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 “security consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security consulting companies are there worldwide?

RevenueBase identified 19,265 company matches for security consulting 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?

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

Which country has the most security consulting companies?

The United States leads with 4,584 companies, followed by the United Kingdom (1,226) and India (918). Every security consulting companies list by country and city is linked on this page.

Which city has the most security consulting companies?

London leads with 450 company records, followed by Sao Paulo (232) and Paris (186).

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 51,927 professional contacts with verified work emails tracked across these 19,265 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 1, 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.