Company lists · Data refreshed November 2026

Top 25 Cybersecurity consultancies based in the United States

Name: Cybersecurity consultancies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 18,658 companies tracked

RevenueBase identified 18,658 company matches for cybersecurity consultancies associated with the United States as of November 2026 and tracks 423,664 professional contacts across them, including 165,313 with verified work emails. New York is the largest hub.

This list covers company matches for cybersecurity consultancies 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 6, 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 6, 2026 How this list was built

18,658Companies

423,664Contacts tracked

165,313Verified emails

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The 25 largest cybersecurity consultancies based in the United States

Ranked by team size

Top 25 of 18,658 company matches for cybersecurity consultancies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 6, 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 6, 2026 · View company records in RevenueBase
2	Guidehouse	Exact match	Mclean, IL, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
3	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
4	Crowdstrike	Exact match	Remote, United StatesHQ recorded Nov 6, 2026	5,001-10,000	11,304 contacts →
	Exact match “CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Comcast Business	Exact match	Philadelphia, PA, United StatesHQ recorded Nov 6, 2026	10001+	8,837 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Nov 6, 2026	10001+	6,031 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 · Nov 6, 2026 · View company records in RevenueBase
7	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 6, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Sailpoint	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,628 contacts →
	Exact match “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Trellix	Exact match	Plano, TX, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
10	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
11	Qualys	Exact match	Foster City, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,323 contacts →
	Exact match “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Sentinelone	Exact match	Mountain View, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,154 contacts →
	Exact match “SentinelOne is the world's leading AI-powered cybersecurity platform.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	GTT	Exact match	Arlington, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,071 contacts →
	Exact match “GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Knowbe4	Exact match	Clearwater, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,678 contacts →
	Exact match “KnowBe4 empowers the modern workforce to make smarter security decisions every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Security Industry Specialists	Exact match	Culver City, NY, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
16	Barracuda	Exact match	Campbell, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
17	RSA Security	Exact match	Burlington, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,314 contacts →
	Exact match “The identity standard for government, finance, and high-assurance organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Tenable	Exact match	Columbia, MD, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,270 contacts →
	Exact match “Tenable is the exposure management company, exposing and closing the cybersecurity gaps that erode business value, reputation and trust.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
20	N-Able	Exact match	Morrisville, NC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,063 contacts →
	Exact match “N-able’s mission is to protect businesses against evolving cyberthreats with a unified cyber resiliency platform to manage, secure, and recover.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Sans Institute	Exact match	Rockville, MD, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
22	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
23	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
24	Beyondtrust	Exact match	Johns Creek, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,770 contacts →
	Exact match “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Forcepoint	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,731 contacts →
	Exact match “Forcepoint simplifies security for global businesses and governments.” Recorded in the RevenueBase company graph · Nov 6, 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 consultancies”. 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 18,658 cybersecurity consultancies based in the United States

See the full list, filter by size, metro and specialty, and access 165,313 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity consultancies based in the United States at a glance

As of Nov 6, 2026

39.0%Verified-email coverage

22.7Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

10,680

11-50

5,574

51-200

1,667

201-500

401

501-1,000

129

1,001-5,000

112

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 18,658 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 consultancies” 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 165,313 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 6, 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 consultancies 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 consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 18,658 company matches for cybersecurity consultancies 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 consultancies?

New York leads with 676 company records, followed by Washington (392) and Atlanta (330).

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 165,313 professional contacts with verified work emails tracked across these 18,658 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 6, 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.