Company lists · Data refreshed September 2026
Top 25 Api security startups based in the United States
RevenueBase identified 91 company matches for api security startups associated with the United States as of September 2026 and tracks 5,205 professional contacts across them, including 2,937 with verified work emails. San Francisco is the largest hub.
This list covers company matches for api security startups 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 September 27, 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.
The 25 largest api security startups based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,217 contacts → | ||||
Exact match “On Dec.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 892 contacts → | ||||
Exact match “No AI without APIs.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 326 contacts → | ||||
Exact match “Invicti is transforming the way web applications are secured.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 256 contacts → | ||||
Exact match “Meet the AI native AppSec platform built for enterprise scale At Mend.io, we believe security should empower, not block.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 232 contacts → | ||||
Exact match “Noname Security is the only company taking a complete, proactive approach to API Security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 219 contacts → | ||||
Exact match “Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 174 contacts → | ||||
Exact match “AI is the operating system of the next decade of enterprise work, and most enterprises are running it on AWS with less oversight than they apply to the humans they're replacing.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 174 contacts → | ||||
Exact match “SecPod is a leading cybersecurity technology company committed to preventing cyberattacks through proactive security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 168 contacts → | ||||
Exact match “OX Security removes risk at the source - eliminating exposures from AI code generation through cloud runtime - preventing security debt before it ever reaches production.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 165 contacts → | ||||
Exact match “Appdome protects mobile apps, APIs, and digital identities from fraud, bots, malware, and account takeover attacks.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 146 contacts → | ||||
Exact match “Cequence protects the applications and data that power enterprises in the agentic era.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 117 contacts → | ||||
Exact match “Apiiro Guardian Agent secures agentic development with the context and memory layer provided by the AppSec Data Fabric.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 105 contacts → | ||||
Exact match “Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 89 contacts → | ||||
Exact match “NTT Application Security is driving the future of application security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 81 contacts → | ||||
Exact match “Traceable is the industry’s leading API Security company that helps organizations achieve API visibility and attack protection in a cloud-first, API-driven world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 79 contacts → | ||||
Exact match “Prophaze WAAP is a unified, AI-driven application security platform built to secure modern digital infrastructure with Kubernetes-native architecture, real-time runtime…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 51 contacts → | ||||
Exact match “The APIsec security testing platform discovers business logic exploits.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 43 contacts → | ||||
Exact match “Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 42 contacts → | ||||
Exact match “Shape Security was acquired by F5 in January 2020, joining forces to transform how we defend the world’s applications against abuse and fraud, prevent reputational damage, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 37 contacts → | ||||
Exact match “We are your partners in product security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 36 contacts → | ||||
Exact match “AppSentinels Platform - an intelligent API and AI security solution designed to protect APIs, AI Agents, and MCP environments with real-time threat detection, deep visibility, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 35 contacts → | ||||
Exact match “Transform application security with complete discovery of your API landscape, automated dev-native testing workflows, and actionable remediation guidance – at the pace of AI.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 30 contacts → | ||||
Exact match “Siemba is an AI-powered cybersecurity platform that help teams continuously discover, validate, and remediate risks across the entire application ecosystem.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 27 contacts → | ||||
Exact match “Forum Systems is the global leader in API Security and Zero Trust with industry-certified, patented, and proven products deployed in the most rigorous and demanding on premise and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 27 contacts → | ||||
Exact match “We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded in the RevenueBase company graph · Sep 27, 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 “api security startups”. 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 91 api security startups based in the United States
See the full list, filter by size, metro and specialty, and access 2,937 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Api security startups 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 91 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 “api security startups” 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 2,937 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 September 27, 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 “api security startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many api security startups are there based in the United States?
RevenueBase identified 91 company matches for api security startups associated with the United States as of September 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?
Imperva tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most api security startups?
San Francisco leads with 17 company records, followed by New York (7) and Boston (6).
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 2,937 professional contacts with verified work emails tracked across these 91 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 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 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
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- New lists
- Api security startups based in India
- AI companies based in the United States
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- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 api security startups based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 91 matching company records for api security startups based in the United States, with 5,205 tracked contacts and 2,937 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: September 27, 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 api security startups based in the United States
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 |  Impervaimperva.comHQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,217 contacts → |
“On Dec.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  KONGkonghq.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 892 contacts → |
“No AI without APIs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Invictiinvicti.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 326 contacts → |
“Invicti is transforming the way web applications are secured.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  mend.iomend.ioHQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 256 contacts → |
“Meet the AI native AppSec platform built for enterprise scale At Mend.io, we believe security should empower, not block.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Noname Securitynonamesecurity.comHQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 232 contacts → |
“Noname Security is the only company taking a complete, proactive approach to API Security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Arkose Labsarkoselabs.comHQ: San Mateo, CA, United StatesReported employees: 201-500 | San Mateo, CA, United States | 201-500 | Exact match | 219 contacts → |
“Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Wallarmwallarm.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 174 contacts → |
“AI is the operating system of the next decade of enterprise work, and most enterprises are running it on AWS with less oversight than they apply to the humans they're replacing.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Secpodsecpod.comHQ: Redwood City, CA, United StatesReported employees: 51-200 | Redwood City, CA, United States | 51-200 | Exact match | 174 contacts → |
“SecPod is a leading cybersecurity technology company committed to preventing cyberattacks through proactive security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  OX Securityox.securityHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 168 contacts → |
“OX Security removes risk at the source - eliminating exposures from AI code generation through cloud runtime - preventing security debt before it ever reaches production.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Appdomeappdome.comHQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 165 contacts → |
“Appdome protects mobile apps, APIs, and digital identities from fraud, bots, malware, and account takeover attacks.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cequence Securitycequence.aiHQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 146 contacts → |
“Cequence protects the applications and data that power enterprises in the agentic era.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Apiiroapiiro.aiHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 117 contacts → |
“Apiiro Guardian Agent secures agentic development with the context and memory layer provided by the AppSec Data Fabric.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Oligo Securityoligo.securityHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 105 contacts → |
“Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Whitehat Dynamic By Synopsyswhitehatsec.comHQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 89 contacts → |
“NTT Application Security is driving the future of application security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Traceable By Harnesstraceable.aiHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 81 contacts → |
“Traceable is the industry’s leading API Security company that helps organizations achieve API visibility and attack protection in a cloud-first, API-driven world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Prophazeprophaze.comHQ: Milipitas, CA, United StatesReported employees: 51-200 | Milipitas, CA, United States | 51-200 | Exact match | 79 contacts → |
“Prophaze WAAP is a unified, AI-driven application security platform built to secure modern digital infrastructure with Kubernetes-native architecture, real-time runtime…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Apisecapisec.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 51 contacts → |
“The APIsec security testing platform discovers business logic exploits.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Escapeescape.techHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Shape Securityshapesecurity.comHQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 42 contacts → |
“Shape Security was acquired by F5 in January 2020, joining forces to transform how we defend the world’s applications against abuse and fraud, prevent reputational damage, and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  We45we45.comHQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 37 contacts → |
“We are your partners in product security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Appsentinelsappsentinels.aiHQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 36 contacts → |
“AppSentinels Platform - an intelligent API and AI security solution designed to protect APIs, AI Agents, and MCP environments with real-time threat detection, deep visibility, and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Stackhawkstackhawk.comHQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 35 contacts → |
“Transform application security with complete discovery of your API landscape, automated dev-native testing workflows, and actionable remediation guidance – at the pace of AI.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Siembasiemba.ioHQ: Alpharetta, GA, United StatesReported employees: 11-50 | Alpharetta, GA, United States | 11-50 | Exact match | 30 contacts → |
“Siemba is an AI-powered cybersecurity platform that help teams continuously discover, validate, and remediate risks across the entire application ecosystem.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Forum Systemsforumsys.comHQ: Needham, MA, United StatesReported employees: 51-200 | Needham, MA, United States | 51-200 | Exact match | 27 contacts → |
“Forum Systems is the global leader in API Security and Zero Trust with industry-certified, patented, and proven products deployed in the most rigorous and demanding on premise and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Seworksse.worksHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 91 company matches
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Api security startups: dataset insights
September 27, 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
91 records in the displayed employee bands.
0 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 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 91 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: September 27, 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 ↗
Questions about this company list
What does Exact match mean for api security startups?
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 api security startups did RevenueBase find based in the United States?
The saved snapshot records 91 matching company records, 5,205 tracked contacts and 2,937 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: September 27, 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
Api security startups by geography
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 api security startups based in the United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/api-security-startups/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Api security startups based in India
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 api security startups based in the United States
RevenueBase records 91 matching company records for api security startups based in the United States, with 5,205 tracked contacts and 2,937 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: September 27, 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 api security startups based in the United States
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 | Impervaimperva.com HQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,217 contacts → |
“On Dec.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | KONGkonghq.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 892 contacts → |
“No AI without APIs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Invictiinvicti.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 326 contacts → |
“Invicti is transforming the way web applications are secured.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | mend.iomend.io HQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 256 contacts → |
“Meet the AI native AppSec platform built for enterprise scale At Mend.io, we believe security should empower, not block.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Noname Securitynonamesecurity.com HQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 232 contacts → |
“Noname Security is the only company taking a complete, proactive approach to API Security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Arkose Labsarkoselabs.com HQ: San Mateo, CA, United StatesReported employees: 201-500 | San Mateo, CA, United States | 201-500 | Exact match | 219 contacts → |
“Arkose Labs helps the biggest enterprises in the world-including top banks, tech giants, social media platforms, airlines, etc-protect their users, revenue and reputation from…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Wallarmwallarm.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 174 contacts → |
“AI is the operating system of the next decade of enterprise work, and most enterprises are running it on AWS with less oversight than they apply to the humans they're replacing.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Secpodsecpod.com HQ: Redwood City, CA, United StatesReported employees: 51-200 | Redwood City, CA, United States | 51-200 | Exact match | 174 contacts → |
“SecPod is a leading cybersecurity technology company committed to preventing cyberattacks through proactive security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | OX Securityox.security HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 168 contacts → |
“OX Security removes risk at the source - eliminating exposures from AI code generation through cloud runtime - preventing security debt before it ever reaches production.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Appdomeappdome.com HQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 165 contacts → |
“Appdome protects mobile apps, APIs, and digital identities from fraud, bots, malware, and account takeover attacks.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cequence Securitycequence.ai HQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 146 contacts → |
“Cequence protects the applications and data that power enterprises in the agentic era.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Apiiroapiiro.ai HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 117 contacts → |
“Apiiro Guardian Agent secures agentic development with the context and memory layer provided by the AppSec Data Fabric.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Oligo Securityoligo.security HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 105 contacts → |
“Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Whitehat Dynamic By Synopsyswhitehatsec.com HQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 89 contacts → |
“NTT Application Security is driving the future of application security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Traceable By Harnesstraceable.ai HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 81 contacts → |
“Traceable is the industry’s leading API Security company that helps organizations achieve API visibility and attack protection in a cloud-first, API-driven world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Prophazeprophaze.com HQ: Milipitas, CA, United StatesReported employees: 51-200 | Milipitas, CA, United States | 51-200 | Exact match | 79 contacts → |
“Prophaze WAAP is a unified, AI-driven application security platform built to secure modern digital infrastructure with Kubernetes-native architecture, real-time runtime…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Apisecapisec.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 51 contacts → |
“The APIsec security testing platform discovers business logic exploits.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Escapeescape.tech HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Shape Securityshapesecurity.com HQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 42 contacts → |
“Shape Security was acquired by F5 in January 2020, joining forces to transform how we defend the world’s applications against abuse and fraud, prevent reputational damage, and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | We45we45.com HQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 37 contacts → |
“We are your partners in product security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Appsentinelsappsentinels.ai HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 36 contacts → |
“AppSentinels Platform - an intelligent API and AI security solution designed to protect APIs, AI Agents, and MCP environments with real-time threat detection, deep visibility, and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Stackhawkstackhawk.com HQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 35 contacts → |
“Transform application security with complete discovery of your API landscape, automated dev-native testing workflows, and actionable remediation guidance – at the pace of AI.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Siembasiemba.io HQ: Alpharetta, GA, United StatesReported employees: 11-50 | Alpharetta, GA, United States | 11-50 | Exact match | 30 contacts → |
“Siemba is an AI-powered cybersecurity platform that help teams continuously discover, validate, and remediate risks across the entire application ecosystem.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Forum Systemsforumsys.com HQ: Needham, MA, United StatesReported employees: 51-200 | Needham, MA, United States | 51-200 | Exact match | 27 contacts → |
“Forum Systems is the global leader in API Security and Zero Trust with industry-certified, patented, and proven products deployed in the most rigorous and demanding on premise and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Seworksse.works HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 91 company matches
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Api security startups: dataset insights
September 27, 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
91 records in the displayed employee bands.
0 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 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 91 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: September 27, 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 ↗
Questions about this company list
What does Exact match mean for api security startups?
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 api security startups did RevenueBase find based in the United States?
The saved snapshot records 91 matching company records, 5,205 tracked contacts and 2,937 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: September 27, 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 api security startups based in the United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/api-security-startups/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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