Company lists · Data refreshed November 2026

Top 25 Zero day research organizations based in the United States

RevenueBase identified 119 company matches for zero day research organizations associated with the United States as of November 2026 and tracks 2,219 professional contacts across them, including 609 with verified work emails. Austin is the largest hub.

This list covers company matches for zero day research organizations associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
119Companies
2,219Contacts tracked
609Verified emails
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The 25 largest zero day research organizations based in the United States

Ranked by team size
Top 25 of 119 company matches for zero day research organizations based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026n/a693 contacts →

Exact match

“The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchTempe, AZ, United StatesHQ recorded Nov 6, 2026201-500357 contacts →

Exact match

“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRome, NY, United StatesHQ recorded Nov 6, 2026201-500171 contacts →

Exact match

“Our roots trace directly to cyber and information security and our well documented contributions are proof.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLexington, MA, United StatesHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchVienna, VA, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBurlington, WA, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“Be in command of your security with Cyemptive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“Our team of world-class reverse engineers discovers exploitable critical vulnerabilities in common commercial software and hardware BEFORE they can be manipulated by attackers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchUnited StatesHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“Originally independent security researchers, our team has a proven track record in both web3 and traditional security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMelbourne, FL, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“At Cromulence LLC we advance our nation’s cybersecurity capabilities through expert application of cutting edge research and equip the next generation of security experts with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“Software ships daily.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Jose, VA, United StatesHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities, before they become incidents that threaten…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSterling, VA, United StatesHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Kyrus is a security innovation company solving the world's hardest computer security problems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Red Balloon Security is a leading security provider and research firm committed to defending embedded devices across a range of critical industries and shaping the future of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“The DRACO Lab (Design of Resilient Architectures for Computing) at the University of Central Florida advances research at the intersection of hardware security, resilient…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026201-50018 contacts →

Exact match

“Two Six Labs invents, prototypes and engineers breakthrough technologies for government and industry, with broad commitments in multiple areas of technological innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNew York, CA, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Include Security is a premiere security consulting company executing thousands of assessments of all types of technology for hundreds of clients since 2011.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGreenville, SC, United StatesHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“We are a think tank of cybersecurity consultants who understand the mechanics and business value of risk reduction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMelbourne, FL, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“We are hackers, reverse engineers, developers, teachers, game-players, problem solvers, and pranksters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAnnapolis, MD, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“In 2004, we founded KoreLogic to build an IT security company that was respected for the quality of its work and the caliber of our staff.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Dataflow Forensics leverages zero-days to detect the most sophisticated cyber-attacks on mobile devices.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCambridge, WA, United StatesHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“Aarno Labs is Pioneering Cybersecurity Technologies for Application Understanding and Protection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrookline, MA, United StatesHQ recorded Nov 6, 202651-2008 contacts →

Exact match

“Scorpion Labs is K logix's offensive security team.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchReston, VA, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Dark Circuit Labs is an offensive cyber security company that provides the highest quality products and services to support the nation’s operational missions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Narf is a global information security company composed of highly skilled reverse engineers, vulnerability researchers and tool developers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchOmaha, NE, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“STACKTITAN is a security services company intent on improving clientele security posture and awareness, through offensive and adversarial security assessments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 119 zero day research organizations based in the United States

See the full list, filter by size, metro and specialty, and access 609 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Zero day research organizations based in the United States at a glance

As of Nov 6, 2026
27.4%Verified-email coverage
18.6Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · Austin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
72
11-50
33
51-200
11
201-500
3

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 119 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “zero day research organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 609 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “zero day research organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many zero day research organizations are there based in the United States?

RevenueBase identified 119 company matches for zero day research organizations associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Synack RED Team tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most zero day research organizations?

Austin leads with 7 company records, followed by San Francisco (7) and New York (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 609 professional contacts with verified work emails tracked across these 119 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 SmartSearch, 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.