Company lists · Data refreshed September 2026

Top 25 User threat prevention software companies based in the United States

RevenueBase identified 500 user threat prevention software companies headquartered in the United States as of September 2026 and tracks 86,703 professional contacts across them, including 42,642 with verified work emails. New York is the largest hub.

This list covers user threat prevention software 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 14, 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 14, 2026 86% judged on-target in blind review
500Companies
86,703Contacts tracked
42,642Verified emails
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The 25 largest user threat prevention software companies based in the United States

Ranked by team size
Top 25 of 500 user threat prevention software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to user threat prevention software 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 14, 202610001+18,431 contacts →

Indirect 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 14, 2026
2Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 14, 202610001+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 14, 2026
3Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 14, 202610001+11,169 contacts →

Indirect 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 14, 2026
4Indirect evidenceRemote, United StatesHQ checked Sep 14, 20265,001-10,00010,118 contacts →

Indirect 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 14, 2026
5Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 14, 20261,001-5,0004,868 contacts →

Indirect evidence

“We’re creating what’s next in online protection.”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidencePlano, TX, United StatesHQ checked Sep 14, 20261,001-5,0003,447 contacts →

Indirect 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 14, 2026
7Indirect evidenceMountain View, CA, United StatesHQ checked Sep 14, 20261,001-5,0003,052 contacts →

Indirect evidence

“SentinelOne is the world's leading AI-powered cybersecurity platform.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceCampbell, CA, United StatesHQ checked Sep 14, 20261,001-5,0002,157 contacts →

Partial evidence

“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceAustin, TX, United StatesHQ checked Sep 14, 202610001+1,217 contacts →

Indirect evidence

“On Dec.”

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceSeattle, WA, United StatesHQ checked Sep 14, 20261,001-5,0001,059 contacts →

Indirect evidence

“WatchGuard® Technologies, Inc.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceChicago, IL, United StatesHQ checked Sep 14, 2026501-1,000874 contacts →

Partial evidence

“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.”

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceSeattle, WA, United StatesHQ checked Sep 14, 2026501-1,000794 contacts →

Indirect evidence

“Absolute Security is partnered with more than 28 of the world’s leading endpoint device manufacturers, embedded in the firmware of 600 million devices, trusted by global…”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceColumbia, MD, United StatesHQ checked Sep 14, 2026501-1,000696 contacts →

Indirect evidence

“Protect Your Endpoints, Identities, Logs, and Employees.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 14, 2026501-1,000651 contacts →

Indirect evidence

“Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 14, 2026501-1,000604 contacts →

Indirect evidence

“Malwarebytes is reimagining security to safeguard devices, data, and people, no matter their location, lifestyle or means.”

Source: RevenueBase Database · checked Sep 14, 2026
16Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 2026501-1,000528 contacts →

Strong evidence

“Hexnode offers AI-powered solutions that help businesses streamline endpoint management, user identity, and threat defense.”

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceBoston, MA, United StatesHQ checked Sep 14, 2026201-500494 contacts →

Indirect evidence

“Lookout, Inc.”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidencePasadena, CA, United StatesHQ checked Sep 14, 2026501-1,000492 contacts →

Indirect evidence

“Guidance (NASDAQ: GUID) exists to turn chaos and the unknown into order and the known-so that companies and their customers can go about their daily lives as usual without worry…”

Source: RevenueBase Database · checked Sep 14, 2026
19Indirect evidenceAnn Arbor, MI, United StatesHQ checked Sep 14, 2026501-1,000435 contacts →

Indirect evidence

“We are Duo, and we’re here to democratize security.”

Source: RevenueBase Database · checked Sep 14, 2026
20Partial evidenceDenver, CO, United StatesHQ checked Sep 14, 2026201-500408 contacts →

Partial evidence

“Red Canary stops cyber threats no one else does, so organizations can fearlessly pursue their missions.”

Source: RevenueBase Database · checked Sep 14, 2026
21Partial evidenceWichita, KS, United StatesHQ checked Sep 14, 2026201-500369 contacts →

Partial evidence

“Novacoast is an international cybersecurity company specializing in IT services and software development.”

Source: RevenueBase Database · checked Sep 14, 2026
22Partial evidenceCambridge, MA, United StatesHQ checked Sep 14, 2026201-500340 contacts →

Partial evidence

“ReversingLabs is the trusted name in file and software security.”

Source: RevenueBase Database · checked Sep 14, 2026
23Indirect evidenceChicago, NY, United StatesHQ checked Sep 14, 2026201-500268 contacts →

Indirect evidence

“Coro, the leading cybersecurity platform for small and mid-size businesses, empowers organizations to easily defend against malware, ransomware, phishing, data leakage, network…”

Source: RevenueBase Database · checked Sep 14, 2026
24Indirect evidenceCupertino, CA, United StatesHQ checked Sep 14, 2026201-500257 contacts →

Indirect evidence

“Cyble is the world’s first intelligence-driven, AI-native security platform delivering detection, protection and remediation across the digital attack surface.”

Source: RevenueBase Database · checked Sep 14, 2026
25Indirect evidencePalo Alto, CA, United StatesHQ checked Sep 14, 20261,001-5,000239 contacts →

Indirect 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 14, 2026

Showing 25 of 500 user threat prevention software companies based in the United States

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User threat prevention software companies based in the United States at a glance

As of Sep 14, 2026
49.2%Verified-email coverage
173.4Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · New York
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
186
11-50
170
51-200
77
201-500
21
501-1,000
19
1,001-5,000
15
5,001-10,000
4
10001+
8

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 500 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 user threat prevention software 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 “user threat prevention software 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 user threat prevention software 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 user threat prevention software 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, 42,642 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 14, 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.

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 user threat prevention software 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 user threat prevention software companies are there based in the United States?

RevenueBase identified 500 user threat prevention software 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 user threat prevention software companies?

New York leads with 21 headquartered companies, followed by Austin (14) and San Francisco (13).

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 42,642 verified decision-maker contacts tracked across these 500 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 14, 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.