Company lists · Data refreshed September 2026
Top 25 Endpoint detection and response software companies based in the United States
RevenueBase identified 83 endpoint detection and response software companies headquartered in the United States as of September 2026 and tracks 6,487 professional contacts across them, including 3,517 with verified work emails. San Francisco is the largest hub.
This list covers endpoint detection and response 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 27, 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 endpoint detection and response software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,052 contacts → | ||||
Indirect evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 726 contacts → | ||||
Indirect evidence “ExtraHop is a leader in real-time network intelligence, empowering organizations with the high-fidelity context they need to power security and IT AI automation, detect risks…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 574 contacts → | ||||
Strong evidence “Cybereason, a LevelBlue company, is a global cybersecurity leader delivering advanced endpoint detection and response (EDR) and industry recognized consulting services to support…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 492 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 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 408 contacts → | ||||
Indirect evidence “Red Canary stops cyber threats no one else does, so organizations can fearlessly pursue their missions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 191 contacts → | ||||
Strong evidence “NetWitness provides comprehensive and highly scalable threat detection and response capabilities for organizations around the world.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 109 contacts → | ||||
Partial evidence “As of February 3, 2025, Cylance® endpoint security assets, including CylanceENDPOINT, CylanceEDGE and CylanceMDR, are now part of Arctic Wolf.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 106 contacts → | ||||
Strong evidence “ThreatDown is a standalone leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 62 contacts → | ||||
Indirect evidence “Gradient Cyber: Built for Mid-Market Security Teams Who Can't Afford to Get It Wrong Mid-market companies face the same threats as the Fortune 500, but without the budget, staff…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 57 contacts → | ||||
Strong evidence “At LMNTRIX, we help organizations take control of their cybersecurity by delivering advanced threat detection, proactive response, and deep adversarial insights-without the…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 45 contacts → | ||||
Strong evidence “Skycep is an endpoint security service provider with various solutions for Incident Detection Response and Vulnerability Management.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 44 contacts → | ||||
Strong evidence “Miggo is the first Application Detection and Response (ADR) platform on a mission to stop application breaches.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 39 contacts → | ||||
Indirect evidence “Cyren, now part of Data443, protects hundreds of millions of users around the world from sophisticated and emerging email, malware, and web attacks every day.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 38 contacts → | ||||
Strong evidence “DataCapable is a software platform that detects and monitors threats in real-time allowing businesses, organizations and government to prepare and respond faster and more…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 38 contacts → | ||||
Partial evidence “Tychon, LLC is a cybersecurity software company founded by former U.S.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 37 contacts → | ||||
Partial evidence “Syxsense is the leading provider of innovative, intuitive technology that sees all and knows everything about every endpoint, in every location, everywhere inside and outside the…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 35 contacts → | ||||
Indirect evidence “Your business has a mobile blind spot.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 34 contacts → | ||||
Strong evidence “We took a different path when developing our threat detection and response solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 24 contacts → | ||||
Strong evidence “We make it easy to deploy, configure, and manage key security tools like cross platform device management (MDM), endpoint detection and response (EDR), and more.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 21 contacts → | ||||
Indirect evidence “Cyber Sainik protects organizations from contemporary, sophisticated threats by delivering enterprise-level tools, methods, procedures, and profound expertise, alongside…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 contacts → | ||||
Indirect evidence “NetSecurity’s mission is to protect, defend, and recover valuable assets from the most advanced cyber attacks.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 15 contacts → | ||||
Partial evidence “Cyber adAPT offers a leading network threat detection platform (NTD) to the enterprise and ODM/OEM markets.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Indirect evidence “CyBourn is passionate about protecting governments, businesses, and consumers from cyber threats.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 14 contacts → | ||||
Strong evidence “360 SOC, headquartered in Phoenix, Arizona, is a U.S-based cybersecurity firm specializing in Managed Detection and Response (MDR) and Security Operations Center as a Service…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 12 contacts → | ||||
Partial evidence “RevBits Cyber Security is focused on developing cutting edge security software and unrivaled cyber incident services.” Source: RevenueBase Database · checked Sep 27, 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: endpoint detection and response 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 endpoint detection and response software companies.
- Partial evidence
- Its own public description names part of endpoint detection and response software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name endpoint detection and response 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 83 endpoint detection and response software companies based in the United States
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Endpoint detection and response software companies based in the United States at a glance
As of Sep 27, 2026Companies by employee count
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 83 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 endpoint detection and response 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 “endpoint detection and response 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 endpoint detection and response 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 endpoint detection and response 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, 3,517 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 27, 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 endpoint detection and response 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 endpoint detection and response software companies are there based in the United States?
RevenueBase identified 83 endpoint detection and response 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?
Sentinelone, headquartered in Mountain View, tops this list with the largest team on record.
Which city has the most endpoint detection and response software companies?
San Francisco leads with 7 headquartered companies, followed by New York (5) and Atlanta (3).
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 3,517 verified decision-maker contacts tracked across these 83 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 27, 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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