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.
The 25 largest threat detection software companies based in the United States
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 10,118 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | Partial evidence | 7,668 contacts → | |||
“Check Point Software Technologies Ltd.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 3,447 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 3,145 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 3,058 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, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 3,052 contacts → | |||
“SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 2,822 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, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 2,813 contacts → | |||
“Infoblox unites networking and security to deliver unmatched performance and protection.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Partial evidence | 2,691 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | Partial evidence | 2,157 contacts → | |||
“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 1,648 contacts → | |||
“Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Indirect evidence | 1,285 contacts → | |||
“ReliaQuest exists to Make Security Possible.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 1,252 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 1,232 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | Strong evidence | 1,231 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | Indirect evidence | 1,217 contacts → | |||
“On Dec.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 1,181 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 1,119 contacts → | |||
“OPSWAT protects critical infrastructure.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 1,059 contacts → | |||
“WatchGuard® Technologies, Inc.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 1,030 contacts → | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Partial evidence | 904 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, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 889 contacts → | |||
“Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
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: threat detection software 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 threat detection software companies.
- Partial evidence
- Its own public description names part of threat detection software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name threat detection software 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 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, 2026Companies by employee count
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.
Threat detection software 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 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.
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