Company lists · Data refreshed September 2026

Top 25 Private intelligence companies based in the United States

Name: Private intelligence companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,013 companies tracked

RevenueBase identified 1,013 private intelligence companies headquartered in the United States as of September 2026 and tracks 21,296 professional contacts across them, including 3,723 with verified work emails. New York is the largest hub.

This list covers private intelligence companies headquartered in the United States, 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 21, 2026.

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 21, 2026 86% judged on-target in blind review

1,013Companies

21,296Contacts tracked

3,723Verified emails

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The 25 largest private intelligence companies based in the United States

Ranked by team size

Top 25 of 1,013 private intelligence companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to private intelligence companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Systems Planning & Analysis	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,092 contacts →
	Indirect 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 21, 2026
2	Paragon Systems INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	10001+	1,949 contacts →
	Indirect 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 21, 2026
3	Andrews International	Indirect evidence	Burbank, CA, United StatesHQ checked Sep 21, 2026	10001+	1,081 contacts →
	Indirect 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 21, 2026
4	Brosnan Risk Consultants	Indirect evidence	Pearl River, NY, United StatesHQ checked Sep 21, 2026	5,001-10,000	1,050 contacts →
	Indirect 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 21, 2026
5	Omniplex World Services Corporation	Partial evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	677 contacts →
	Partial evidence “OMNIPLEX World Services Corporation is a leader and innovator in delivering professional background investigations, intelligence support, and physical security services to…” Source: RevenueBase Database · checked Sep 21, 2026
6	DK Security	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	572 contacts →
	Indirect evidence “DK Security is unique in that it offers a single company for a wide ranging availability of security and investigative services.” Source: RevenueBase Database · checked Sep 21, 2026
7	MSA Security	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	10001+	571 contacts →
	Indirect evidence “Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
8	Security Alliance	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	553 contacts →
	Partial evidence “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Source: RevenueBase Database · checked Sep 21, 2026
9	United Security, Inc. USI	Indirect evidence	Red Bank, NJ, United StatesHQ checked Sep 21, 2026	1,001-5,000	416 contacts →
	Indirect evidence “United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.” Source: RevenueBase Database · checked Sep 21, 2026
10	Deep Water Point & Associates	Indirect evidence	Annapolis, MD, United StatesHQ checked Sep 21, 2026	201-500	350 contacts →
	Indirect evidence “Deep Water Point & Associates is composed of industry veterans and government experts who dedicate their expertise to maximize our clients’ competitive edge.” Source: RevenueBase Database · checked Sep 21, 2026
11	Master Security	Partial evidence	Hunt Valley, MD, United StatesHQ checked Sep 21, 2026	201-500	338 contacts →
	Partial evidence “For over 50 years, Master Security has provided outstanding security services for state and federal government agencies and private enterprises.” Source: RevenueBase Database · checked Sep 21, 2026
12	Sentar INC	Partial evidence	Huntsville, AL, United StatesHQ checked Sep 21, 2026	201-500	338 contacts →
	Partial evidence “Sentar, an employee-owned company, is a leading cyber-intelligence solutions provider focused on the National Security sector.” Source: RevenueBase Database · checked Sep 21, 2026
13	DEXIS	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 21, 2026	51-200	303 contacts →
	Indirect evidence “Dexis is a mission-driven security analytics company that helps U.S.” Source: RevenueBase Database · checked Sep 21, 2026
14	Babel Street	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	273 contacts →
	Strong evidence “Babel Street delivers mission-grade risk intelligence for organizations across government, defense, and the private sector to expose hidden identities, secure vendor networks, and…” Source: RevenueBase Database · checked Sep 21, 2026
15	Concentric	Indirect evidence	Kirkland, WA, United StatesHQ checked Sep 21, 2026	201-500	271 contacts →
	Indirect evidence “We are experts in protecting what matters most.” Source: RevenueBase Database · checked Sep 21, 2026
16	Flashpoint	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	265 contacts →
	Partial evidence “Flashpoint is the leader in threat data and intelligence.” Source: RevenueBase Database · checked Sep 21, 2026
17	Vets Securing America	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 21, 2026	5,001-10,000	231 contacts →
	Indirect evidence “Full Service Security and Investigative company serving the government sector.” Source: RevenueBase Database · checked Sep 21, 2026
18	T&m Usa, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	216 contacts →
	Indirect evidence “T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Source: RevenueBase Database · checked Sep 21, 2026
19	American Security Programs	Indirect evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	172 contacts →
	Indirect evidence “ASP is a premium contract security services company based in Northern Virginia and a wholly owned subsidiary of SecurAmerica.” Source: RevenueBase Database · checked Sep 21, 2026
20	TDI	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	162 contacts →
	Partial evidence “TDI is a leading global advisory and risk intelligence firm delivering strategic insight, due diligence & investigations, and SaaS solutions across industries and geographies.” Source: RevenueBase Database · checked Sep 21, 2026
21	Diversified Protection Corporation	Indirect evidence	Daniel Island, SC, United StatesHQ checked Sep 21, 2026	501-1,000	160 contacts →
	Indirect evidence “In a eld that is highly competitive, Diversified Protection Corporation (DPC) is a spirited company effectively providing superior security services to federal and commercial…” Source: RevenueBase Database · checked Sep 21, 2026
22	Silverseal	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	159 contacts →
	Indirect evidence “Silverseal is a comprehensive security solutions firm with worldwide affiliations that can provide global security services in a highly professional manner.” Source: RevenueBase Database · checked Sep 21, 2026
23	Coastal International Security, INC	Indirect evidence	Espanola, NM, United StatesHQ checked Sep 21, 2026	201-500	151 contacts →
	Indirect evidence “Coastal International Security provides strategic planning and security services to high-impact government agencies such as the Department of State, Homeland Security and Defense…” Source: RevenueBase Database · checked Sep 21, 2026
24	At-Risk International, INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	51-200	139 contacts →
	Partial evidence “Our goal is to create and maintain safe environments by providing threat analysis, protection, investigations, consulting, intelligence and security training services everywhere…” Source: RevenueBase Database · checked Sep 21, 2026
25	Core ONE	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	201-500	126 contacts →
	Indirect evidence “Our mission is to be at the forefront of devising analytical, operational and technical solutions to the most complex national security challenges by delivering superior advice…” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: private intelligence companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names private intelligence companies.
Partial evidence: Its own public description names part of private intelligence companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name private intelligence companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,013 private intelligence companies based in the United States

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Private intelligence companies based in the United States at a glance

As of Sep 21, 2026

17.5%Verified-email coverage

21.0Average contacts per company

11-50Median size (employees)

6.0%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

497

11-50

320

51-200

131

201-500

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 1,013 companies.

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 private intelligence companies, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “private intelligence companies”. 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 private intelligence companies), 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 private intelligence companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 3,723 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 21, 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.

Private intelligence companies by metro

Private intelligence companies in New York61
Private intelligence companies in Washington52

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 private intelligence companies, 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 private intelligence companies are there based in the United States?

RevenueBase identified 1,013 private intelligence companies headquartered in the United States 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?

Systems Planning & Analysis, headquartered in Alexandria, tops this list with the largest team on record.

Which city has the most private intelligence companies?

New York leads with 61 headquartered companies, followed by Washington (52) and Miami (24).

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 3,723 verified decision-maker contacts tracked across these 1,013 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 21, 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.