Company lists · Data refreshed September 2026

Top 25 Cyber threat intelligence companies based in the United States

RevenueBase identified 2,478 cyber threat intelligence companies headquartered in the United States as of September 2026 and tracks 131,631 professional contacts across them, including 67,947 with verified work emails and 39,590 with mobile numbers. New York is the largest hub.

This list covers cyber threat intelligence 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 7, 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 7, 2026 86% judged on-target in blind review
2,478Companies
131,631Contacts tracked
67,947Verified emails
39,590Mobile numbers
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The 25 largest cyber threat intelligence companies based in the United States

Ranked by team size
Top 25 of 2,478 cyber threat intelligence companies based in the United States, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to cyber threat intelligence 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 7, 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 7, 2026
2Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 7, 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 7, 2026
3Indirect evidenceRemote, United StatesHQ checked Sep 7, 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 7, 2026
4Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 7, 2026n/a3,649 contacts →

“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: company website · checked Sep 7, 2026
5Strong evidencePlano, TX, United StatesHQ checked Sep 7, 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 7, 2026
6Indirect evidenceMountain View, CA, United StatesHQ checked Sep 7, 20261,001-5,0003,052 contacts →

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

Source: company website · checked Sep 7, 2026
7Partial evidenceBoston, MA, United StatesHQ checked Sep 7, 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 7, 2026
8Partial evidenceMiami, FL, United StatesHQ checked Sep 7, 20261,001-5,0002,715 contacts →

“Varonis unifies AI-native data security, AI security and governance, and behavior-based threat detection.”

Source: company website · checked Sep 7, 2026
9Partial evidenceLeawood, KS, United StatesHQ checked Sep 7, 20261,001-5,0002,222 contacts →

“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.”

Source: company website · checked Sep 7, 2026
10Partial evidenceCampbell, CA, United StatesHQ checked Sep 7, 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 7, 2026
11Partial evidenceMorrisville, NC, United StatesHQ checked Sep 7, 20261,001-5,0001,903 contacts →

“N-able’s mission is to protect businesses against evolving cyberthreats with a unified cyber resiliency platform to manage, secure, and recover.”

Source: company website · checked Sep 7, 2026
12Indirect evidenceEden Prairie, MN, United StatesHQ checked Sep 7, 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 7, 2026
13Indirect evidenceTampa, FL, United StatesHQ checked Sep 7, 20261,001-5,0001,285 contacts →

“ReliaQuest exists to Make Security Possible.”

Source: company website · checked Sep 7, 2026
14Indirect evidenceAustin, TX, United StatesHQ checked Sep 7, 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 7, 2026
15Indirect evidenceReston, VA, United StatesHQ checked Sep 7, 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 7, 2026
16Indirect evidenceAustin, TX, United StatesHQ checked Sep 7, 202610001+1,217 contacts →

“On Dec.”

Source: company website · checked Sep 7, 2026
17Partial evidenceSan Jose, CA, United StatesHQ checked Sep 7, 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 7, 2026
18Indirect evidenceSeattle, WA, United StatesHQ checked Sep 7, 20261,001-5,0001,059 contacts →

“WatchGuard® Technologies, Inc.”

Source: company website · checked Sep 7, 2026
19Indirect evidenceBoston, MA, United StatesHQ checked Sep 7, 2026501-1,0001,030 contacts →
Source: company website · checked Sep 7, 2026
20Strong evidenceBaltimore, MD, United StatesHQ checked Sep 7, 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 7, 2026
21Partial evidenceBroomfield, CO, United StatesHQ checked Sep 7, 2026501-1,000876 contacts →

“Exabeam is the leader in Behavior Intelligence for the agentic enterprise.”

Source: company website · checked Sep 7, 2026
22Strong evidenceChicago, IL, United StatesHQ checked Sep 7, 2026501-1,000874 contacts →

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

Source: company website · checked Sep 7, 2026
23Partial evidenceRedwood City, CA, United StatesHQ checked Sep 7, 2026501-1,000828 contacts →

“Sumo Logic helps make the digital world secure, fast, and reliable by unifying critical security and operational data through its Intelligent Operations Platform.”

Source: company website · checked Sep 7, 2026
24Indirect evidenceLansing, MI, United StatesHQ checked Sep 7, 2026n/a785 contacts →

“ASK is now Convergence Networks!”

Source: company website · checked Sep 7, 2026
25Strong evidenceBoston, MA, United StatesHQ checked Sep 7, 2026501-1,000752 contacts →

“Bitsight is the global leader in cyber risk intelligence, leveraging advanced AI to empower organizations with precise insights derived from the industry’s most extensive external…”

Source: company website · checked Sep 7, 2026

Showing 25 of 2,478 cyber threat intelligence companies based in the United States

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Cyber threat intelligence companies based in the United States at a glance

As of Sep 7, 2026
51.6%Verified-email coverage
30.1%Mobile-number coverage
53.1Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · New York
Sep 7, 2026Page data refreshed

Companies by employee count

1-10
1,160
11-50
817
51-200
338
201-500
80
501-1,000
33
1,001-5,000
35
5,001-10,000
6
10001+
7

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 cyber threat intelligence 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 “cyber threat intelligence 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 cyber threat intelligence 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 cyber threat intelligence 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, 67,947 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 7, 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 cyber threat intelligence 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 cyber threat intelligence companies are there based in the United States?

RevenueBase identified 2,478 cyber threat intelligence 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 cyber threat intelligence companies?

New York leads with 104 headquartered companies, followed by San Francisco (54) and Washington (53).

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 67,947 verified decision-maker contacts tracked across these 2,478 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 7, 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.