Company lists · Data refreshed September 2026

Top 25 Cybersecurity platform companies based in the United States

Name: Cybersecurity platform 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 28, 2026 6,035 companies tracked

RevenueBase identified 6,035 cybersecurity platform companies headquartered in the United States as of September 2026 and tracks 307,268 professional contacts across them, including 147,985 with verified work emails. New York is the largest hub.

This list covers cybersecurity platform 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 28, 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 28, 2026 86% judged on-target in blind review

6,035Companies

307,268Contacts tracked

147,985Verified emails

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The 25 largest cybersecurity platform companies based in the United States

Ranked by team size

Top 25 of 6,035 cybersecurity platform companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity platform 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	Palo Alto Networks	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 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 28, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 28, 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 28, 2026
3	Symantec	Partial evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	10001+	11,169 contacts →
	Partial evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Sep 28, 2026
4	Crowdstrike	Strong evidence	Remote, United StatesHQ checked Sep 28, 2026	5,001-10,000	10,118 contacts →
	Strong 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 28, 2026
5	Zscaler	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	9,101 contacts →
	Indirect evidence “Zscaler (NASDAQ: ZS) is a pioneer and global leader in zero trust security.” Source: RevenueBase Database · checked Sep 28, 2026
6	Splunk	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	8,225 contacts →
	Partial evidence “Splunk is helping to build a safer and more resilient digital world by equipping customers with the unified security and observability platform they need to keep their…” Source: RevenueBase Database · checked Sep 28, 2026
7	Check Point Software	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,668 contacts →
	Indirect evidence “Check Point Software Technologies Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
8	Hackerone	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	n/a	6,058 contacts →
	Indirect 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 28, 2026
9	Cohesity	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,962 contacts →
	Partial evidence “A modern platform for the AI era Our mission at Cohesity is simple: to protect, secure, and provide insights into the world’s data.” Source: RevenueBase Database · checked Sep 28, 2026
10	Rubrik	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 28, 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 28, 2026
11	Kaseya	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,276 contacts →
	Partial evidence “Kaseya is the leading global provider of AI-powered IT management and cybersecurity software.” Source: RevenueBase Database · checked Sep 28, 2026
12	Commvault	Indirect evidence	Tinton Falls, NJ, United StatesHQ checked Sep 28, 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 28, 2026
13	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 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 28, 2026
14	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 28, 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 28, 2026
15	Extreme Networks	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,194 contacts →
	Partial evidence “Extreme Networks, Inc.(EXTR) is a leader in AI-powered cloud networking, delivering a unified platform that simplifies and secures IT operations.” Source: RevenueBase Database · checked Sep 28, 2026
16	Arctic Wolf	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,145 contacts →
	Indirect 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 28, 2026
17	Qualys	Indirect evidence	Foster City, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,058 contacts →
	Indirect 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 28, 2026
18	Netskope	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 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 28, 2026
19	Sentinelone	Strong evidence	Mountain View, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,052 contacts →
	Strong evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 28, 2026
20	Entrust	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 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 28, 2026
21	Sailpoint	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,886 contacts →
	Indirect evidence “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Source: RevenueBase Database · checked Sep 28, 2026
22	Rapid7	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,822 contacts →
	Partial evidence “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Source: RevenueBase Database · checked Sep 28, 2026
23	Infoblox	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,813 contacts →
	Indirect evidence “Infoblox unites networking and security to deliver unmatched performance and protection.” Source: RevenueBase Database · checked Sep 28, 2026
24	Varonis	Indirect evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,715 contacts →
	Indirect evidence “Varonis unifies AI-native data security, AI security and governance, and behavior-based threat detection.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ivanti	Indirect evidence	South Jordan, UT, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,691 contacts →
	Indirect evidence “Ivanti is a global enterprise IT and security software company that provides the trusted data authority for AI-driven, autonomous endpoint management.” Source: RevenueBase Database · checked Sep 28, 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 platform 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 cybersecurity platform companies.
Partial evidence: Its own public description names part of cybersecurity platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity platform 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 6,035 cybersecurity platform companies based in the United States

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Cybersecurity platform companies based in the United States at a glance

As of Sep 28, 2026

48.2%Verified-email coverage

50.9Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,920

11-50

2,023

51-200

715

201-500

184

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 6,035 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 cybersecurity platform 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 “cybersecurity platform 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 cybersecurity platform 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 cybersecurity platform 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, 147,985 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 28, 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 platform companies 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 platform 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 cybersecurity platform companies are there based in the United States?

RevenueBase identified 6,035 cybersecurity platform 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?

Palo Alto Networks, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most cybersecurity platform companies?

New York leads with 246 headquartered companies, followed by San Francisco (161) and Austin (147).

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 147,985 verified decision-maker contacts tracked across these 6,035 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 28, 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.