Company lists · Data refreshed September 2026

Top 25 Api security testing firms worldwide

RevenueBase identified 2,525 company matches for api security testing firms worldwide as of September 2026 and tracks 23,134 professional contacts across them, including 6,557 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for api security testing firms 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 September 27, 2026. Country and city lists for api security testing firms 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
2,525Companies
23,134Contacts tracked
6,557Verified emails
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The 25 largest api security testing firms worldwide

Ranked by team size
Top 25 of 2,525 company matches for api security testing firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Sep 27, 2026n/a813 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 · Sep 27, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 27, 2026501-1,000374 contacts →

Exact match

“At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 2026201-500350 contacts →

Exact match

“Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchTempe, AZ, United StatesHQ recorded Sep 27, 2026201-500344 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 · Sep 27, 2026 · View company records in RevenueBase
5Exact matchAhmedabad, IndiaHQ recorded Sep 27, 2026201-500340 contacts →

Exact match

“TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchMumbai, IndiaHQ recorded Sep 27, 2026201-500335 contacts →

Exact match

“T A L A K U N C H I Networks Pvt.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Sep 27, 2026201-500326 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
8Exact matchNashville, TN, United StatesHQ recorded Sep 27, 2026201-500272 contacts →

Exact match

“Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchSan Jose, CA, United StatesHQ recorded Sep 27, 2026201-500232 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
10Exact matchParis, FranceHQ recorded Sep 27, 2026n/a197 contacts →

Exact match

“Yogosha is an Offensive Security Testing Platform that allows companies and governments to raise their security posture.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchNY, United StatesHQ recorded Sep 27, 2026201-500186 contacts →

Exact match

“Kualitatem empowers businesses to deliver quality software.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchAhmedabad, IndiaHQ recorded Sep 27, 202651-200182 contacts →

Exact match

“Net Square is a company specializing in information security.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchParis, FranceHQ recorded Sep 27, 2026201-500171 contacts →

Exact match

“Synacktiv is an offensive security company founded in 2012 by several security experts.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchChantilly, VA, United StatesHQ recorded Sep 27, 20261,001-5,000170 contacts →

Exact match

“Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 202651-200167 contacts →

Exact match

“Fluid Attacks helps companies prevent, detect, manage and remediate vulnerabilities across their application attack surface.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchRehovot, IsraelHQ recorded Sep 27, 202651-200167 contacts →

Exact match

“Citadel is an Information Security Consulting company.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchLeuven, BelgiumHQ recorded Sep 27, 202651-200163 contacts →

Exact match

“Guardsquare offers the most complete approach to mobile application security on the market.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchPune, IndiaHQ recorded Sep 27, 202651-200156 contacts →

Exact match

“At Payatu we believe in following one’s passion and with that thought, we have created a world class team of researchers and executors who are bending the rules to provide state…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchGhent, BelgiumHQ recorded Sep 27, 2026201-500154 contacts →

Exact match

“From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchPune, IndiaHQ recorded Sep 27, 202651-200149 contacts →

Exact match

“SecureLayer7 is a CREST accredited advanced offensive security solutions provider, combining deep expertise with innovative products to protect modern digital enterprises.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchMission Viejo, CA, United StatesHQ recorded Sep 27, 2026201-500125 contacts →

Exact match

“Varutra Consulting, an InfoShare company, is a globally recognized cybersecurity firm delivering cutting-edge solutions in Cloud Security, Mobile Security, Application Security…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Sep 27, 202651-200123 contacts →

Exact match

“Tarlogic is an international company that specializes in cyber intelligence and cybersecurity.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchAlexandria, VA, United StatesHQ recorded Sep 27, 2026n/a113 contacts →

Exact match

“Strategic Security is an IT Security consulting firm that provides in-depth technical security assessments of your network, web application, and regulatory compliance gap analysis…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchNoida, IndiaHQ recorded Sep 27, 202611-50112 contacts →

Exact match

“Securium Solutions Private Limited is a CERT-In Empanelled cybersecurity company helping organizations secure their digital infrastructure against evolving cyber threats.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchDenver, CO, United StatesHQ recorded Sep 27, 202651-200111 contacts →

Exact match

“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 2,525 api security testing firms worldwide

See the full list, filter by size, metro and specialty, and access 6,557 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Api security testing firms worldwide at a glance

As of Sep 27, 2026
28.3%Verified-email coverage
9.2Average contacts per company
1-10Median size (employees)
2.1%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
1,564
11-50
777
51-200
139
201-500
32
501-1,000
3
1,001-5,000
4
5,001-10,000
2
10001+
2

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 api security testing firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “api security testing firms” 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 6,557 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.

Api security testing firms by location

12 lists · largest first

Every Api security testing firms 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 “api security testing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many api security testing firms are there worldwide?

RevenueBase identified 2,525 company matches for api security testing firms worldwide 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?

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 api security testing firms?

The United States leads with 485 companies, followed by India (334) and the United Kingdom (144). Every api security testing firms list by country and city is linked on this page.

Which city has the most api security testing firms?

London leads with 52 company records, followed by Hyderabad (31) and Pune (28).

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 6,557 professional contacts with verified work emails tracked across these 2,525 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.