Company lists · Data refreshed November 2026
Top 25 Zero day research organizations worldwide
RevenueBase identified 688 company matches for zero day research organizations worldwide as of November 2026 and tracks 6,065 professional contacts across them, including 1,400 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for zero day research organizations worldwide, 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. Country and city lists for zero day research organizations follow the table.
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.
The 25 largest zero day research organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 693 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 | |||||
| 2 | 357 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 | |||||
| 3 | 235 contacts → | ||||
Exact match “Filigran, a cybersecurity company, delivers a unique open-source, threat-informed approach to Continuous Threat Exposure Management (CTEM).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 192 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 171 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 | |||||
| 6 | 134 contacts → | ||||
Exact match “ICA Foundation, a Non Government Organisation, founded in 2011 under Indian Trusts Act.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 88 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 | |||||
| 8 | 67 contacts → | ||||
Exact match “EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 67 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 66 contacts → | ||||
Exact match “At SCIBER we engineer software for the future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 63 contacts → | ||||
Exact match “We’re here to provide world-leading vulnerability research and capabilities!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 61 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 | |||||
| 13 | 59 contacts → | ||||
Exact match “Security Research Labs (SRLabs) is a cybersecurity consultancy and research collective committed to making the world more secure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 52 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 | |||||
| 15 | 50 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 | |||||
| 16 | 48 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 | |||||
| 17 | 48 contacts → | ||||
Exact match “Who we are: The CyberDataLab (Cybersecurity and Data Science Lab) encompasses a group of skilled and motivated scientists and researchers with a strong commitment for quality…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 47 contacts → | ||||
Exact match “Software ships daily.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 47 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 | |||||
| 20 | 40 contacts → | ||||
Exact match “We aim to make the digital world safer by reporting vulnerabilities we find in digital systems to the people who can fix them.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 34 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 | |||||
| 22 | 33 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 | |||||
| 23 | 31 contacts → | ||||
Exact match “With Autobahn, you find and collect vulnerabilities, prioritize them from a hacker perspective, and fix them quickly with step-by-step solution guides.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 28 contacts → | ||||
Exact match “Fuzzinglabs is a cybersecurity startup specializing in vulnerability research, fuzzing, offensive and blockchain security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 28 contacts → | ||||
Exact match “NICS Lab is an international leading Security research group headed by Javier Lopez, Full Professor of the Computer Science Department at University of Malaga.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “zero day research organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 688 zero day research organizations worldwide
See the full list, filter by size, metro and specialty, and access 1,400 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Zero day research organizations worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for zero day research organizations are linked below.
- What qualifies
- Company records worldwide 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. 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 1,400 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.
Zero day research organizations by location
1 lists · largest firstEvery Zero day research organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 worldwide?
RevenueBase identified 688 company matches for zero day research organizations worldwide 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 country has the most zero day research organizations?
The United States leads with 119 companies. Every zero day research organizations list by country and city is linked on this page.
Which city has the most zero day research organizations?
London leads with 15 company records, followed by Bangalore (8) and San Francisco (8).
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 1,400 professional contacts with verified work emails tracked across these 688 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.
Ready to reach these companies? Verified emails and direct dials for all 688 zero day research organizations worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 zero day research organizations worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 688 matching company records for zero day research organizations worldwide, with 6,065 tracked contacts and 1,400 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 zero day research organizations worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Synack RED Teamsynack.comHQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 693 contacts → |
“The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Bishop FOXbishopfox.comHQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 357 contacts → |
“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Filigranfiligran.ioHQ: Paris, United StatesReported employees: 201-500 | Paris, United States | 201-500 | Exact match | 235 contacts → |
“Filigran, a cybersecurity company, delivers a unique open-source, threat-informed approach to Continuous Threat Exposure Management (CTEM).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Kayhutkayhut.comHQ: Herzeliya, IsraelReported employees: 201-500 | Herzeliya, Israel | 201-500 | Exact match | 192 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Assured Information Security AISainfosec.comHQ: Rome, NY, United StatesReported employees: 201-500 | Rome, NY, United States | 201-500 | Exact match | 171 contacts → |
“Our roots trace directly to cyber and information security and our well documented contributions are proof.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Indian Cyber Associationica.inHQ: Noida, IndiaReported employees: 51-200 | Noida, India | 51-200 | Exact match | 134 contacts → |
“ICA Foundation, a Non Government Organisation, founded in 2011 under Indian Trusts Act.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Vulncheckvulncheck.comHQ: Lexington, MA, United StatesReported employees: 51-200 | Lexington, MA, United States | 51-200 | Exact match | 88 contacts → |
“VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  EMSECemsec.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 67 contacts → |
“EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cipher Tech Solutions, INCciphertechsolutions.comHQ: Vienna, VA, United StatesReported employees: 51-200 | Vienna, VA, United States | 51-200 | Exact match | 67 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 |  Scibersciber.ioHQ: Malmö, SwedenReported employees: 51-200 | Malmö, Sweden | 51-200 | Exact match | 66 contacts → |
“At SCIBER we engineer software for the future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Interrupt Labsinterruptlabs.co.ukHQ: Basingstoke, United KingdomReported employees: 51-200 | Basingstoke, United Kingdom | 51-200 | Exact match | 63 contacts → |
“We’re here to provide world-leading vulnerability research and capabilities!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Cyemptivecyemptive.comHQ: Burlington, WA, United StatesReported employees: 51-200 | Burlington, WA, United States | 51-200 | Exact match | 61 contacts → |
“Be in command of your security with Cyemptive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Security Research Labssrlabs.deHQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 59 contacts → |
“Security Research Labs (SRLabs) is a cybersecurity consultancy and research collective committed to making the world more secure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Exodus Intelligenceexodusintel.comHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 52 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Ottersecosec.ioHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 50 contacts → |
“Originally independent security researchers, our team has a proven track record in both web3 and traditional security.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Cromulencecromulence.comHQ: Melbourne, FL, United StatesReported employees: 51-200 | Melbourne, FL, United States | 51-200 | Exact match | 48 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Cyberdatalabcyberdatalab.um.esHQ: Murcia, SpainReported employees: 51-200 | Murcia, Spain | 51-200 | Exact match | 48 contacts → |
“Who we are: The CyberDataLab (Cybersecurity and Data Science Lab) encompasses a group of skilled and motivated scientists and researchers with a strong commitment for quality…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Projectdiscoveryprojectdiscovery.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 47 contacts → |
“Software ships daily.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  quokka.ioquokka.ioHQ: San Jose, VA, United StatesReported employees: 11-50 | San Jose, VA, United States | 11-50 | Exact match | 47 contacts → |
“Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities, before they become incidents that threaten…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: The Hague, NetherlandsReported employees: Not recorded | The Hague, Netherlands | Not recorded | Exact match | 40 contacts → |
“We aim to make the digital world safer by reporting vulnerabilities we find in digital systems to the people who can fix them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Kyrus Techkyr.usHQ: Sterling, VA, United StatesReported employees: 11-50 | Sterling, VA, United States | 11-50 | Exact match | 34 contacts → |
“Kyrus is a security innovation company solving the world's hardest computer security problems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  RED Balloon Security, INCredballoonsecurity.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 33 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Autobahn Security Reduce Hackabilityautobahn-security.comHQ: Jakarta Selatan Jakarta, SingaporeReported employees: 51-200 | Jakarta Selatan Jakarta, Singapore | 51-200 | Exact match | 31 contacts → |
“With Autobahn, you find and collect vulnerabilities, prioritize them from a hacker perspective, and fix them quickly with step-by-step solution guides.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Fuzzinglabsfuzzinglabs.comHQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 28 contacts → |
“Fuzzinglabs is a cybersecurity startup specializing in vulnerability research, fuzzing, offensive and blockchain security.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Nics LABnics.uma.esHQ: Málaga, SpainReported employees: 11-50 | Málaga, Spain | 11-50 | Exact match | 28 contacts → |
“NICS Lab is an international leading Security research group headed by Javier Lopez, Full Professor of the Computer Science Department at University of Malaga.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 688 company matches
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Zero day research organizations: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
686 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 688 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Zero day research organizations by location
1 lists · largest firstEvery Zero day research organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for zero day research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many zero day research organizations did RevenueBase find worldwide?
The saved snapshot records 688 matching company records, 6,065 tracked contacts and 1,400 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 zero day research organizations worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/zero-day-research-organizations.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 zero day research organizations worldwide
RevenueBase records 688 matching company records for zero day research organizations worldwide, with 6,065 tracked contacts and 1,400 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 zero day research organizations worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Synack RED Teamsynack.com HQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 693 contacts → |
“The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Bishop FOXbishopfox.com HQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 357 contacts → |
“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Filigranfiligran.io HQ: Paris, United StatesReported employees: 201-500 | Paris, United States | 201-500 | Exact match | 235 contacts → |
“Filigran, a cybersecurity company, delivers a unique open-source, threat-informed approach to Continuous Threat Exposure Management (CTEM).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Kayhutkayhut.com HQ: Herzeliya, IsraelReported employees: 201-500 | Herzeliya, Israel | 201-500 | Exact match | 192 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Assured Information Security AISainfosec.com HQ: Rome, NY, United StatesReported employees: 201-500 | Rome, NY, United States | 201-500 | Exact match | 171 contacts → |
“Our roots trace directly to cyber and information security and our well documented contributions are proof.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Indian Cyber Associationica.in HQ: Noida, IndiaReported employees: 51-200 | Noida, India | 51-200 | Exact match | 134 contacts → |
“ICA Foundation, a Non Government Organisation, founded in 2011 under Indian Trusts Act.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Vulncheckvulncheck.com HQ: Lexington, MA, United StatesReported employees: 51-200 | Lexington, MA, United States | 51-200 | Exact match | 88 contacts → |
“VulnCheck helps organizations outpace adversaries with exploit intelligence that predicts avenues of attack with speed and accuracy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | EMSECemsec.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 67 contacts → |
“EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cipher Tech Solutions, INCciphertechsolutions.com HQ: Vienna, VA, United StatesReported employees: 51-200 | Vienna, VA, United States | 51-200 | Exact match | 67 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Scibersciber.io HQ: Malmö, SwedenReported employees: 51-200 | Malmö, Sweden | 51-200 | Exact match | 66 contacts → |
“At SCIBER we engineer software for the future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Interrupt Labsinterruptlabs.co.uk HQ: Basingstoke, United KingdomReported employees: 51-200 | Basingstoke, United Kingdom | 51-200 | Exact match | 63 contacts → |
“We’re here to provide world-leading vulnerability research and capabilities!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Cyemptivecyemptive.com HQ: Burlington, WA, United StatesReported employees: 51-200 | Burlington, WA, United States | 51-200 | Exact match | 61 contacts → |
“Be in command of your security with Cyemptive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Security Research Labssrlabs.de HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 59 contacts → |
“Security Research Labs (SRLabs) is a cybersecurity consultancy and research collective committed to making the world more secure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Exodus Intelligenceexodusintel.com HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 52 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Ottersecosec.io HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 50 contacts → |
“Originally independent security researchers, our team has a proven track record in both web3 and traditional security.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Cromulencecromulence.com HQ: Melbourne, FL, United StatesReported employees: 51-200 | Melbourne, FL, United States | 51-200 | Exact match | 48 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cyberdatalabcyberdatalab.um.es HQ: Murcia, SpainReported employees: 51-200 | Murcia, Spain | 51-200 | Exact match | 48 contacts → |
“Who we are: The CyberDataLab (Cybersecurity and Data Science Lab) encompasses a group of skilled and motivated scientists and researchers with a strong commitment for quality…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Projectdiscoveryprojectdiscovery.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 47 contacts → |
“Software ships daily.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | quokka.ioquokka.io HQ: San Jose, VA, United StatesReported employees: 11-50 | San Jose, VA, United States | 11-50 | Exact match | 47 contacts → |
“Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities, before they become incidents that threaten…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: The Hague, NetherlandsReported employees: Not recorded | The Hague, Netherlands | Not recorded | Exact match | 40 contacts → |
“We aim to make the digital world safer by reporting vulnerabilities we find in digital systems to the people who can fix them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Kyrus Techkyr.us HQ: Sterling, VA, United StatesReported employees: 11-50 | Sterling, VA, United States | 11-50 | Exact match | 34 contacts → |
“Kyrus is a security innovation company solving the world's hardest computer security problems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | RED Balloon Security, INCredballoonsecurity.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 33 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Autobahn Security Reduce Hackabilityautobahn-security.com HQ: Jakarta Selatan Jakarta, SingaporeReported employees: 51-200 | Jakarta Selatan Jakarta, Singapore | 51-200 | Exact match | 31 contacts → |
“With Autobahn, you find and collect vulnerabilities, prioritize them from a hacker perspective, and fix them quickly with step-by-step solution guides.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Fuzzinglabsfuzzinglabs.com HQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 28 contacts → |
“Fuzzinglabs is a cybersecurity startup specializing in vulnerability research, fuzzing, offensive and blockchain security.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Nics LABnics.uma.es HQ: Málaga, SpainReported employees: 11-50 | Málaga, Spain | 11-50 | Exact match | 28 contacts → |
“NICS Lab is an international leading Security research group headed by Javier Lopez, Full Professor of the Computer Science Department at University of Malaga.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Zero day research organizations: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
686 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 688 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Zero day research organizations by location
1 lists · largest firstEvery Zero day research organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for zero day research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many zero day research organizations did RevenueBase find worldwide?
The saved snapshot records 688 matching company records, 6,065 tracked contacts and 1,400 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 zero day research organizations worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/zero-day-research-organizations.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗