Company lists · Data refreshed September 2026

Top 25 Api security testing firms based in Germany

RevenueBase identified 71 company matches for api security testing firms associated with Germany as of September 2026 and tracks 460 professional contacts across them, including 137 with verified work emails. Munich is the largest hub.

This list covers company matches for api security testing firms associated with Germany, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
71Companies
460Contacts tracked
137Verified emails
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The 25 largest api security testing firms based in Germany

Ranked by team size
Top 25 of 71 company matches for api security testing firms based in Germany, 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 matchTübingen, GermanyHQ recorded Sep 27, 202651-20069 contacts →

Exact match

“Die SySS GmbH ist ein herstellerunabhängiger IT-Sicherheitsdienstleister und führender Anbieter für Penetrationstests in der DACH-Region.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchWolnzach, GermanyHQ recorded Sep 27, 202651-20037 contacts →

Exact match

“Ihr SOC-Partner im DACH-Mittelstand.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchStuttgart, GermanyHQ recorded Sep 27, 202611-5021 contacts →

Exact match

“Unser Ziel ist es, für Sie Produkte und Lösungen zu entwickeln, welche gleichzeitig widerstandsfähig gegen Angriffe und Manipulationen sind, um Daten und Prozesse zu schützen.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchBerlin, GermanyHQ recorded Sep 27, 202611-5018 contacts →

Exact match

“Cure53 offers classic black-box penetration tests (zero-knowledge) as well as white-box tests and code audits.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchBerlin, GermanyHQ recorded Sep 27, 202611-5017 contacts →

Exact match

“Die GAI NetConsult GmbH ist ein in Deutschland und dem benachbarten Ausland tätiges, unabhängiges Beratungsunternehmen für IT- und OT-Security mit Hauptsitz in Berlin.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchSteinau, GermanyHQ recorded Sep 27, 20261-1017 contacts →

Exact match

“Independent firm offering innovative solutions for Managed Security, Information Security & Risk, Business Continuity, Certification (ISO & PCI) and Computer Forensics.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchUnterhaching, GermanyHQ recorded Sep 27, 202611-5016 contacts →

Exact match

“Protection with Passion Seit über 20 Jahren entwickeln und implementieren wir Sicherheitsstrategien, die den Unternehmenserfolg unserer Kunden in den Mittelpunkt stellen.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchMunich, GermanyHQ recorded Sep 27, 202611-5016 contacts →

Exact match

“Book.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchEttlingen, GermanyHQ recorded Sep 27, 202611-5015 contacts →

Exact match

“Auxilium Cyber Security is independent information security consultancy company focusing mainly on the following topics- Penetration testing of IoT/automotive units, web and…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchWalldorf, GermanyHQ recorded Sep 27, 202611-5010 contacts →

Exact match

“WALLSEC specializes in penetration testing and security audits for critical enterprise IT.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchFrankfurt, GermanyHQ recorded Sep 27, 202611-5010 contacts →

Exact match

“Mantodea Security bietet Ihnen qualitativ hochwertige und umfassende Penetration Tests im gesamten IT-Umfeld.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchHamburg, GermanyHQ recorded Sep 27, 202611-509 contacts →

Exact match

“Our experienced cyber security experts help you protect your applications and systems and implement progressive cyber security, cloud and penetration test concepts.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchEschborn, GermanyHQ recorded Sep 27, 202611-509 contacts →

Exact match

“With over 25 years’ experience in Penetration Testing and Red Teaming, and recently appointed OFFSEC Gold Channel und Learning Partner our handpicked, certified and passionate…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchBerlin, GermanyHQ recorded Sep 27, 20261-107 contacts →

Exact match

“Bugshell is a European penetration testing platform that enables organizations to manage security testing in a transparent, trackable, and scalable way.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchAachen, GermanyHQ recorded Sep 27, 20261-107 contacts →

Exact match

“X41 D-Sec GmbH is an expert provider for application security services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchMunich, GermanyHQ recorded Sep 27, 20261-107 contacts →

Exact match

“We are your automotive penetration testing experts.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchMunich, GermanyHQ recorded Sep 27, 20261-106 contacts →

Exact match

“Lutra Security ist ein IT-Sicherheits- und Penetrationstest-Dienstleister mit Sitz in München, der sich auf umfassende Angriffssimulationen und anspruchsvolle Penetrationstests…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchKönigstein, GermanyHQ recorded Sep 27, 202611-505 contacts →

Exact match

“Die SpecOps Solutions GmbH ist ein Nischenanbieter für Informationssicherheit.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchBerlin, GermanyHQ recorded Sep 27, 202611-505 contacts →

Exact match

“Applied Computer Security Research & Audits Recurity Labs considers design making & breaking as our core competence, closely followed by high end security analysis services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchStuttgart, GermanyHQ recorded Sep 27, 20261-105 contacts →

Exact match

“Unser Ziel ist es, Resilienz gegen Cyber-Angriffe zu stärken.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchWetter, GermanyHQ recorded Sep 27, 20261-105 contacts →

Exact match

“Bei Queryella stehen IT-Sicherheit und Datenschutz mobiler Apps im Mittelpunkt.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchMannheim, GermanyHQ recorded Sep 27, 20261-104 contacts →

Exact match

“Wir sind spezialisiert auf die Durchführung von Penetrationstests und SOC/SIEM Managed Services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchWeingarten, GermanyHQ recorded Sep 27, 20261-103 contacts →

Exact match

“Our Fully Autonomous Pentesting Solution helps businesses with constrained cybersecurity resources efficiently achieve and demonstrate strong cybersecurity by reducing complexity…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchBergisch Gladbach, GermanyHQ recorded Sep 27, 202611-503 contacts →

Exact match

“The company name “Jester” refers to the tradition of a special kind of consultant during the medieval royal courts: The Court Jester The court jester was the only one in court…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchBremen, GermanyHQ recorded Sep 27, 20261-103 contacts →

Exact match

“Die ByteSnipers GmbH ist Ihr vertrauenswürdiger Partner für erstklassige IT-Sicherheit.”

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

Showing 25 of 71 api security testing firms based in Germany

See the full list, filter by size, metro and specialty, and access 137 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Api security testing firms based in Germany at a glance

As of Sep 27, 2026
29.8%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
14.1%Largest-city concentration · Munich
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
23
51-200
3

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 71 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 Germany 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. 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 137 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 testing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many api security testing firms are there based in Germany?

RevenueBase identified 71 company matches for api security testing firms associated with Germany 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?

Syss Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most api security testing firms?

Munich leads with 10 company records, followed by Berlin (9) and Dortmund (3).

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 137 professional contacts with verified work emails tracked across these 71 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.