Company lists · Data refreshed September 2026

Top 25 Defense industrial base security consultants worldwide

RevenueBase identified 10,789 defense industrial base security consultants worldwide as of September 2026 and tracks 166,948 professional contacts across them, including 36,001 with verified work emails. The United States is the largest market and London the largest hub.

This list covers defense industrial base security consultants worldwide, 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 28, 2026. Country and city lists for defense industrial base security consultants follow the table.

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 28, 2026 86% judged on-target in blind review
10,789Companies
166,948Contacts tracked
36,001Verified emails
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The 25 largest defense industrial base security consultants worldwide

Ranked by team size
Top 25 of 10,789 defense industrial base security consultants worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to defense industrial base security consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceReston, VA, United StatesHQ checked Sep 28, 202610001+10,793 contacts →

Indirect evidence

“At Peraton, we're at the forefront of delivering the next big thing every day.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceHerndon, VA, United StatesHQ checked Sep 28, 20265,001-10,0009,697 contacts →

Indirect evidence

“MANTECH is more than a technology company.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceMilano, ItalyHQ checked Sep 28, 202610001+3,387 contacts →

Partial evidence

“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceLeawood, KS, United StatesHQ checked Sep 28, 20261,001-5,0002,222 contacts →

Indirect evidence

“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceAlexandria, VA, United StatesHQ checked Sep 28, 20261,001-5,0002,092 contacts →

Partial evidence

“Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceHerndon, VA, United StatesHQ checked Sep 28, 202610001+1,949 contacts →

Partial evidence

“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceBp12936, FranceHQ checked Sep 28, 202610001+1,455 contacts →

Partial evidence

“ICTS Europe is Europe’s leading security specialist.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceAl Nakheel, Saudi ArabiaHQ checked Sep 28, 2026501-1,0001,378 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceDubai, United Arab EmiratesHQ checked Sep 28, 20265,001-10,0001,374 contacts →

Partial evidence

“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.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceReston, VA, United StatesHQ checked Sep 28, 20261,001-5,0001,232 contacts →

Partial evidence

“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceMorrisville, NC, United StatesHQ checked Sep 28, 2026501-1,0001,175 contacts →

Indirect evidence

“IEM is a professional services firm dedicated to building a safe, secure, and resilient world.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceBurbank, CA, United StatesHQ checked Sep 28, 202610001+1,081 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 28, 20265,001-10,0001,062 contacts →

Indirect evidence

“Founded in 1982, St.”

Source: RevenueBase Database · checked Sep 28, 2026
14Strong evidencePearl River, NY, United StatesHQ checked Sep 28, 20265,001-10,0001,050 contacts →

Strong evidence

“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceCiudad De Mexico, MexicoHQ checked Sep 28, 20261,001-5,0001,041 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceMarseille, FranceHQ checked Sep 28, 202610001+1,007 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceTrevose, PA, United StatesHQ checked Sep 28, 2026201-500979 contacts →

Indirect evidence

“PPC is now part of DSA”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceOslo, NorwayHQ checked Sep 28, 20265,001-10,000792 contacts →

Partial evidence

“Securitas AS er det største og eldste sikkerhetsselskapet i Norge.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceUnited StatesHQ checked Sep 28, 20261,001-5,000781 contacts →

Partial evidence

“AEGIS is a London based, privately owned, British security and risk management company with overseas offices in Afghanistan, Bahrain, Iraq and the USA.”

Source: RevenueBase Database · checked Sep 28, 2026
20Strong evidenceBeijing, ChinaHQ checked Sep 28, 2026n/a771 contacts →

Strong evidence

“Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceWestwood, MA, United StatesHQ checked Sep 28, 20261,001-5,000748 contacts →

Partial evidence

“Improving Security.”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceLagos, NigeriaHQ checked Sep 28, 2026501-1,000642 contacts →

Partial evidence

“Halogen Group formerly known as Halogen Security Company Limited is the leading Security Solutions Provider in West Africa.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceAshburn, VA, United StatesHQ checked Sep 28, 2026501-1,000629 contacts →

Partial evidence

“Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceReston, VA, United StatesHQ checked Sep 28, 20261,001-5,000629 contacts →

Partial evidence

“Sallyport Global a Caliburn company is a global provider of a full spectrum of security and mission support solutions tailored to enable global security and stability operations.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceColumbia, MD, United StatesHQ checked Sep 28, 20261,001-5,000611 contacts →

Indirect evidence

“Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 10,789 defense industrial base security consultants worldwide

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Defense industrial base security consultants worldwide at a glance

As of Sep 28, 2026
21.6%Verified-email coverage
15.5Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
6,208
11-50
3,050
51-200
970
201-500
302
501-1,000
96
1,001-5,000
110
5,001-10,000
25
10001+
16

Email recency is reported on each country list linked below.

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 defense industrial base security consultants, 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.
Coverage
Every country. Country and city lists for defense industrial base security consultants are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “defense industrial base security consultants”. 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 defense industrial base security consultants), 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 defense industrial base security consultants, and records with no verified work email.
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, 36,001 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 28, 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.

Defense industrial base security consultants by location

81 lists · largest first

Every Defense industrial base security consultants 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 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 defense industrial base security consultants, 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 defense industrial base security consultants are there worldwide?

RevenueBase identified 10,789 defense industrial base security consultants worldwide 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?

Peraton, headquartered in Reston, tops this list with the largest team on record.

Which country has the most defense industrial base security consultants?

The United States leads with 3,473 companies, followed by the United Kingdom (658) and India (382). Every defense industrial base security consultants list by country and city is linked on this page.

Which city has the most defense industrial base security consultants?

London leads with 251 headquartered companies, followed by Washington (118) and Sao Paulo (117).

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 36,001 verified decision-maker contacts tracked across these 10,789 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 28, 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.