Company lists · Data refreshed November 2026

Top 25 Intelligence and security services based in the United States

Name: Intelligence and security services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 2,905 companies tracked

RevenueBase identified 2,905 company matches for intelligence and security services associated with the United States as of November 2026 and tracks 209,749 professional contacts across them, including 24,922 with verified work emails. New York is the largest hub.

This list covers company matches for intelligence and security services associated with the United States, 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 5, 2026.

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 5, 2026 How this list was built

2,905Companies

209,749Contacts tracked

24,922Verified emails

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The 25 largest intelligence and security services based in the United States

Ranked by team size

Top 25 of 2,905 company matches for intelligence and security services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	Allied Universal	Exact match	Irvine, IL, United StatesHQ recorded Nov 5, 2026	10001+	66,203 contacts →
	Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Securitas Security Services Usa, INC	Exact match	Parsippany, MI, United StatesHQ recorded Nov 5, 2026	10001+	40,551 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	10,193 contacts →
	Exact match “About Us: At MANTECH, we believe national security demands more than technology-it requires an unwavering dedication to the mission and the warfighters who defend it.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 5, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Triple Canopy A Constellis Company	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 2026	10001+	2,953 contacts →
	Exact match “Triple Canopy is a Constellis company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Security Industry Specialists	Exact match	Culver City, NY, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
7	Systems Planning & Analysis	Exact match	Alexandria, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,214 contacts →
	Exact match “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,171 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 · Nov 5, 2026 · View company records in RevenueBase
9	Pinkerton Comprehensive Risk Management	Exact match	Ann Arbor, MI, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,136 contacts →
	Exact match “Pinkerton, established in 1850 by Allan Pinkerton, stands as a leading global provider of security and risk management solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
11	HSS	Exact match	Denver, CO, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,811 contacts →
	Exact match “HSS is now Tarian!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	10001+	1,562 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
14	SOS Security LLC	Exact match	Parsippany, VA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
15	St. Moritz Security Services, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,168 contacts →
	Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Brosnan Risk Consultants	Exact match	Pearl River, CA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
17	First Coast Security	Exact match	Jacksonville, FL, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
18	L-3 National Security Solutions	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	862 contacts →
	Exact match “L-3 National Security Solutions was acquired by CACI International Inc on February 1, 2016.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Securamerica	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	835 contacts →
	Exact match “Now part of Allied Universal.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Akal Security	Exact match	Espanola, NM, United StatesHQ recorded Nov 5, 2026	10001+	798 contacts →
	Exact match “Known for our responsiveness, innovation, and customer-focused service, Akal provides officers and specialized training to a broad range of clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Northeast Security INC	Exact match	Westwood, MA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	767 contacts →
	Exact match “Improving Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	United Protective Services	Exact match	Dallas, OK, United StatesHQ recorded Nov 5, 2026	1,001-5,000	720 contacts →
	Exact match “UNITED PROTECTIVE SERVICES "Our Edge Is Your Security" United Protective Services is a Southwest based provider of security services unique from traditional security companies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Professional Security Consultants, INC	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	697 contacts →
	Exact match “Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Omniplex World Services Corporation	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	696 contacts →
	Exact match “OMNIPLEX World Services Corporation is a leader and innovator in delivering professional background investigations, intelligence support, and physical security services to…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Sallyport Global	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	687 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 5, 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 “intelligence and security services”. 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 2,905 intelligence and security services based in the United States

See the full list, filter by size, metro and specialty, and access 24,922 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Intelligence and security services based in the United States at a glance

As of Nov 5, 2026

11.9%Verified-email coverage

72.2Average contacts per company

11-50Median size (employees)

4.4%Largest-city concentration · New York

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

1,181

11-50

907

51-200

501

201-500

150

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,905 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “intelligence and security services” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 24,922 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 5, 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.

Intelligence and security services by metro

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 “intelligence and security services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many intelligence and security services are there based in the United States?

RevenueBase identified 2,905 company matches for intelligence and security services associated with the United States 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?

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

Which city has the most intelligence and security services?

New York leads with 127 company records, followed by Washington (84) and Houston (69).

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 24,922 professional contacts with verified work emails tracked across these 2,905 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 5, 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.