Company lists · Data refreshed September 2026

Top 25 Threat detection software companies based in the United States

RevenueBase identified 1,468 threat detection software companies headquartered in the United States as of September 2026 and tracks 141,384 professional contacts across them, including 71,763 with verified work emails and 38,207 with mobile numbers. New York is the largest hub.

This list covers threat detection 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 6, 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 6, 2026 86% judged on-target in blind review
1,468Companies
141,384Contacts tracked
71,763Verified emails
38,207Mobile numbers
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The 25 largest threat detection software companies based in the United States

Ranked by team size
Top 25 of 1,468 threat detection software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to threat detection 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 6, 202610001+18,431 contacts →

“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: company website · checked Sep 6, 2026
2Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 6, 202610001+14,289 contacts →

“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.”

Source: company website · checked Sep 6, 2026
3Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 6, 202610001+11,169 contacts →

“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceRemote, United StatesHQ checked Sep 6, 20265,001-10,00010,118 contacts →

“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: company website · checked Sep 6, 2026
5Partial evidenceRedwood City, CA, United StatesHQ checked Sep 6, 20265,001-10,0007,668 contacts →

“Check Point Software Technologies Ltd.”

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

“Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.”

Source: company website · checked Sep 6, 2026
7Indirect evidenceEden Prairie, MN, United StatesHQ checked Sep 6, 20261,001-5,0003,145 contacts →

“Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceFoster City, CA, United StatesHQ checked Sep 6, 20261,001-5,0003,058 contacts →

“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: company website · checked Sep 6, 2026
9Indirect evidenceMountain View, CA, United StatesHQ checked Sep 6, 20261,001-5,0003,052 contacts →

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

Source: company website · checked Sep 6, 2026
10Indirect evidenceBoston, MA, United StatesHQ checked Sep 6, 20261,001-5,0002,822 contacts →

“Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 6, 20261,001-5,0002,813 contacts →

“Infoblox unites networking and security to deliver unmatched performance and protection.”

Source: company website · checked Sep 6, 2026
12Partial evidenceSouth Jordan, UT, United StatesHQ checked Sep 6, 20261,001-5,0002,691 contacts →

“Ivanti is a global enterprise IT and security software company that provides the trusted data authority for AI-driven, autonomous endpoint management.”

Source: company website · checked Sep 6, 2026
13Partial evidenceCampbell, CA, United StatesHQ checked Sep 6, 20261,001-5,0002,157 contacts →

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

Source: company website · checked Sep 6, 2026
14Indirect evidenceEden Prairie, MN, United StatesHQ checked Sep 6, 20261,001-5,0001,648 contacts →

“Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceTampa, FL, United StatesHQ checked Sep 6, 20261,001-5,0001,285 contacts →

“ReliaQuest exists to Make Security Possible.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceAustin, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,252 contacts →

“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.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceReston, VA, United StatesHQ checked Sep 6, 20261,001-5,0001,232 contacts →

“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.”

Source: company website · checked Sep 6, 2026
18Strong evidenceHouston, TX, United StatesHQ checked Sep 6, 2026201-5001,231 contacts →

“PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…”

Source: company website · checked Sep 6, 2026
19Indirect evidenceAustin, TX, United StatesHQ checked Sep 6, 202610001+1,217 contacts →

“On Dec.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 6, 20261,001-5,0001,181 contacts →

“As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…”

Source: company website · checked Sep 6, 2026
21Indirect evidenceTampa, FL, United StatesHQ checked Sep 6, 2026501-1,0001,119 contacts →

“OPSWAT protects critical infrastructure.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceSeattle, WA, United StatesHQ checked Sep 6, 20261,001-5,0001,059 contacts →

“WatchGuard® Technologies, Inc.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceBoston, MA, United StatesHQ checked Sep 6, 2026501-1,0001,030 contacts →
Source: company website · checked Sep 6, 2026
24Partial evidenceBaltimore, MD, United StatesHQ checked Sep 6, 2026501-1,000904 contacts →

“ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 6, 2026501-1,000889 contacts →

“Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).”

Source: company website · checked Sep 6, 2026

Showing 25 of 1,468 threat detection software companies based in the United States

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Threat detection software companies based in the United States at a glance

As of Sep 6, 2026
50.8%Verified-email coverage
27.0%Mobile-number coverage
96.3Average contacts per company
11-50Median size (employees)
4.6%Largest-city concentration · New York
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
555
11-50
522
51-200
242
201-500
58
501-1,000
37
1,001-5,000
36
5,001-10,000
8
10001+
9

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 threat detection 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 “threat detection 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 threat detection 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 threat detection 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, 71,763 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 6, 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 threat detection 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 threat detection software companies are there based in the United States?

RevenueBase identified 1,468 threat detection 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 threat detection software companies?

New York leads with 67 headquartered companies, followed by San Francisco (50) and Austin (41).

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 71,763 verified decision-maker contacts tracked across these 1,468 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 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 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.