Company lists · Data refreshed November 2026

Top 25 Cybersecurity agencies based in the United States

Name: Cybersecurity agencies 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 10,329 companies tracked

RevenueBase identified 10,329 company matches for cybersecurity agencies associated with the United States as of November 2026 and tracks 308,854 professional contacts across them, including 96,356 with verified work emails. New York is the largest hub.

This list covers company matches for cybersecurity agencies 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

10,329Companies

308,854Contacts tracked

96,356Verified emails

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The 25 largest cybersecurity agencies based in the United States

Ranked by team size

Top 25 of 10,329 company matches for cybersecurity agencies 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	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Nov 5, 2026	10001+	15,414 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Guidehouse	Exact match	Mclean, IL, United StatesHQ recorded Nov 5, 2026	10001+	13,603 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Nov 5, 2026	10001+	11,878 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Sierra Nevada Corporation	Exact match	Sparks, NV, United StatesHQ recorded Nov 5, 2026	1,001-5,000	4,819 contacts →
	Exact match “SNC is a trusted global leader in aerospace and national security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Trellix	Exact match	Plano, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	3,510 contacts →
	Exact match “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Nov 5, 2026	n/a	3,342 contacts →
	Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Barracuda	Exact match	Campbell, CA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,408 contacts →
	Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” 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	Sans Institute	Exact match	Rockville, MD, United StatesHQ recorded Nov 5, 2026	n/a	1,972 contacts →
	Exact match “SANS is the most trusted and by far the largest source for information and cybersecurity training and certification in the world.” 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	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,901 contacts →
	Exact match “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Fortra	Exact match	Eden Prairie, MN, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,691 contacts →
	Exact match “Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Dynetics, INC	Exact match	Huntsville, AL, United StatesHQ recorded Nov 5, 2026	10001+	1,482 contacts →
	Exact match “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Trace3	Exact match	Irvine, MI, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,431 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,413 contacts →
	Exact match “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,346 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 · Nov 5, 2026 · View company records in RevenueBase
17	Ec-Council	Exact match	Albuquerque, NM, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,324 contacts →
	Exact match “EC-Council is the creator of the globally renowned Certified Ethical Hacker (CEH) program.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Reliaquest	Exact match	Tampa, FL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,290 contacts →
	Exact match “ReliaQuest exists to Make Security Possible.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Imperva	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	10001+	1,192 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Opswat	Exact match	Tampa, FL, United StatesHQ recorded Nov 5, 2026	501-1,000	1,192 contacts →
	Exact match “OPSWAT protects critical infrastructure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Centric Consulting	Exact match	Dayton, OH, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,159 contacts →
	Exact match “Committed to delivering tailored solutions and unmatched experiences, Centric Consulting is an international business and technology consulting firm that combines the benefits of…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	IT Solutions	Exact match	Fort Washington, PA, United StatesHQ recorded Nov 5, 2026	501-1,000	1,082 contacts →
	Exact match “IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	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
24	GDT	Exact match	Dallas, TX, United StatesHQ recorded Nov 5, 2026	501-1,000	1,072 contacts →
	Exact match “As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Synoptek	Exact match	Costa Mesa, CA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,062 contacts →
	Exact match “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” 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 “cybersecurity agencies”. 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 10,329 cybersecurity agencies based in the United States

See the full list, filter by size, metro and specialty, and access 96,356 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity agencies based in the United States at a glance

As of Nov 5, 2026

31.2%Verified-email coverage

29.9Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

5,604

11-50

3,239

51-200

1,007

201-500

237

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 10,329 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 “cybersecurity agencies” 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 96,356 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.

Cybersecurity agencies 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 “cybersecurity agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity agencies are there based in the United States?

RevenueBase identified 10,329 company matches for cybersecurity agencies 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?

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

Which city has the most cybersecurity agencies?

New York leads with 368 company records, followed by Washington (231) and Atlanta (190).

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 96,356 professional contacts with verified work emails tracked across these 10,329 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.