Company lists · Data refreshed September 2026

Top 25 Cybersecurity services and solutions based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 14,616 companies tracked

RevenueBase identified 14,616 cybersecurity services and solutions headquartered in the United States as of September 2026 and tracks 758,777 professional contacts across them, including 268,714 with verified work emails and 215,003 with mobile numbers. New York is the largest hub.

This list covers cybersecurity services and solutions 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 24, 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 24, 2026 86% judged on-target in blind review

14,616Companies

758,777Contacts tracked

268,714Verified emails

215,003Mobile numbers

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The 25 largest cybersecurity services and solutions based in the United States

Ranked by team size

Top 25 of 14,616 cybersecurity services and solutions based in the United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity services and solutions: 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	CISCO	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	10001+	137,277 contacts →
	Indirect evidence “Cisco is the worldwide technology leader that is revolutionizing the way organizations connect and protect in the AI era.” Source: RevenueBase Database · checked Sep 24, 2026
2	Dell Technologies	Indirect evidence	Round Rock, TX, United StatesHQ checked Sep 24, 2026	10001+	136,446 contacts →
	Indirect evidence “Our technology is intelligent, secure, and built for you.” Source: RevenueBase Database · checked Sep 24, 2026
3	Palo Alto Networks	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 24, 2026	10001+	18,431 contacts →
	Partial evidence “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Source: RevenueBase Database · checked Sep 24, 2026
4	Vmware	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 24, 2026	10001+	17,326 contacts →
	Indirect evidence “Broadcom's VMware software manages cloud complexity so customers can modernize infrastructure, accelerate app development, and protect workloads, wherever these reside.” Source: RevenueBase Database · checked Sep 24, 2026
5	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 24, 2026	10001+	14,289 contacts →
	Indirect evidence “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Source: RevenueBase Database · checked Sep 24, 2026
6	Apex Systems	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	12,231 contacts →
	Partial evidence “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Source: RevenueBase Database · checked Sep 24, 2026
7	Crowdstrike	Partial evidence	Remote, United StatesHQ checked Sep 24, 2026	5,001-10,000	10,118 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
8	Comcast Business	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 24, 2026	10001+	8,242 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
9	Check Point Software	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 24, 2026	5,001-10,000	7,668 contacts →
	Indirect evidence “Check Point Software Technologies Ltd.” Source: RevenueBase Database · checked Sep 24, 2026
10	Hackerone	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 24, 2026	n/a	6,058 contacts →
	Partial evidence “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Source: RevenueBase Database · checked Sep 24, 2026
11	Convergint	Indirect evidence	Hoffman Estates, IL, United StatesHQ checked Sep 24, 2026	10001+	5,707 contacts →
	Indirect evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 24, 2026
12	Asrc Federal	Partial evidence	Reston, VA, United StatesHQ checked Sep 24, 2026	5,001-10,000	4,542 contacts →
	Partial evidence “ASRC Federal’s employees provide solutions for more than 30 U.S.” Source: RevenueBase Database · checked Sep 24, 2026
13	Sierra Nevada Corporation	Indirect evidence	Sparks, NV, United StatesHQ checked Sep 24, 2026	1,001-5,000	4,484 contacts →
	Indirect evidence “SNC is a trusted global leader in aerospace and national security.” Source: RevenueBase Database · checked Sep 24, 2026
14	Rubrik	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	4,448 contacts →
	Indirect evidence “Rubrik (NYSE: RBRK), the Security and AI company, operates at the intersection of data protection, cyber resilience and enterprise AI acceleration.” Source: RevenueBase Database · checked Sep 24, 2026
15	Commvault	Indirect evidence	Tinton Falls, NJ, United StatesHQ checked Sep 24, 2026	1,001-5,000	4,032 contacts →
	Indirect evidence “Commvault (NASDAQ: CVLT) is a leader in unified resilience at enterprise scale.” Source: RevenueBase Database · checked Sep 24, 2026
16	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 24, 2026	n/a	3,649 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
17	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,447 contacts →
	Partial evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 24, 2026
18	Cyberark	Indirect evidence	Newton, MA, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,302 contacts →
	Indirect evidence “CyberArk is the global leader in Identity Security.” Source: RevenueBase Database · checked Sep 24, 2026
19	Quest Software	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,206 contacts →
	Indirect evidence “At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: RevenueBase Database · checked Sep 24, 2026
20	Arctic Wolf	Partial evidence	Eden Prairie, MN, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,145 contacts →
	Partial evidence “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Source: RevenueBase Database · checked Sep 24, 2026
21	Qualys	Partial evidence	Foster City, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,058 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
22	Netskope	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,056 contacts →
	Indirect evidence “Netskope (NASDAQ: NTSK), a leader in modern security and networking for the cloud and AI era, addresses the needs of both security and networking teams by providing optimized…” Source: RevenueBase Database · checked Sep 24, 2026
23	Sentinelone	Partial evidence	Mountain View, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,052 contacts →
	Partial evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 24, 2026
24	GTT	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,933 contacts →
	Indirect evidence “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 –…” Source: RevenueBase Database · checked Sep 24, 2026
25	Entrust	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,907 contacts →
	Indirect evidence “Entrust fights fraud and cyber threats with identity-centric security that protects people, devices, and data.” Source: RevenueBase Database · checked Sep 24, 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: cybersecurity services and solutions. 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 cybersecurity services and solutions.
Partial evidence: Its own public description names part of cybersecurity services and solutions, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity services and solutions. 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 14,616 cybersecurity services and solutions based in the United States

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Cybersecurity services and solutions based in the United States at a glance

As of Sep 24, 2026

35.4%Verified-email coverage

28.3%Mobile-number coverage

51.9Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

7,570

11-50

4,768

51-200

1,562

201-500

364

501-1,000

136

1,001-5,000

128

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

199,3430–30

60,40431–60

4,37361–90

41390–180

4,181180+

Company record updated

Median 87.0d

00–30

168,49531–60

343,61561–90

203,73090–180

42,937180+

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 cybersecurity services and solutions, 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 “cybersecurity services and solutions”. 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 cybersecurity services and solutions), 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 cybersecurity services and solutions, 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, 268,714 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 24, 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.

Cybersecurity services and solutions by metro

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 cybersecurity services and solutions, 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 cybersecurity services and solutions are there based in the United States?

RevenueBase identified 14,616 cybersecurity services and solutions 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?

CISCO, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most cybersecurity services and solutions?

New York leads with 457 headquartered companies, followed by Houston (271) and Washington (235).

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 268,714 verified decision-maker contacts tracked across these 14,616 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 24, 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.