Company lists · Data refreshed September 2026
Top 25 Security audit firms based in Germany
RevenueBase identified 147 company matches for security audit firms associated with Germany as of September 2026 and tracks 1,301 professional contacts across them, including 587 with verified work emails and 13 with mobile numbers. Berlin is the largest hub.
This list covers company matches for security audit 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 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest security audit firms based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 363 contacts → | ||||
Exact match “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 2 | 111 contacts → | ||||
Exact match “TÜV Informationstechnik GmbH (headquartered in Essen, Germany) is a renowned IT security service provider and an independent testing institute and laboratory for IT security and…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 3 | 69 contacts → | ||||
Exact match “ditis - The Security Company!” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 4 | 49 contacts → | ||||
Exact match “ProSec GmbH verwandelt Unternehmen in digitale Festungen.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 5 | 40 contacts → | ||||
Exact match “BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 6 | 37 contacts → | ||||
Exact match “Ihr SOC-Partner im DACH-Mittelstand.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 7 | 22 contacts → | ||||
Exact match “Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 8 | 21 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 6, 2026 · View company records in RevenueBase | |||||
| 9 | 19 contacts → | ||||
Exact match “SCHUTZWERK GmbH is an international IT security consultancy.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 10 | 18 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 6, 2026 · View company records in RevenueBase | |||||
| 11 | 18 contacts → | ||||
Exact match “Wir sind ein Security House.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 12 | 17 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 6, 2026 · View company records in RevenueBase | |||||
| 13 | 16 contacts → | ||||
Exact match “Die Tengelmann Audit GmbH ist eine Prüfungs- und Beratungsgesellschaft mit einem vielfältigen Leistungsportfolio rund um die Themen Datenschutz, IT-Sicherheit und Revision.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 14 | 16 contacts → | ||||
Exact match “Cyber Samurai GmbH – Ihr IT-Security Dienstleister im Kampf gegen aktuelle Cyberbedrohungen.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 15 | 16 contacts → | ||||
Exact match “DIESEC, founded by Carl Dietzel in 2009, is dedicated to securing your most valuable asset - your data.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 16 | 16 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 6, 2026 · View company records in RevenueBase | |||||
| 17 | 16 contacts → | ||||
Exact match “Book.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 18 | 14 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 19 | 13 contacts → | ||||
Exact match “Unser Versprechen für Ihre Cybersicherheit!” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 20 | 11 contacts → | ||||
Exact match “Sicherheit können wir Wir sind sequire (für: security (engl: Sicherheit) und quire (lateinisch: können))!” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 21 | 11 contacts → | ||||
Exact match “AuditOne delivers modern audit infrastructure and cybersecurity services built for the teams that set the standard for trust.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 22 | 11 contacts → | ||||
Exact match “greenhats® is a platform for IT security.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 23 | 10 contacts → | ||||
Exact match “WALLSEC specializes in penetration testing and security audits for critical enterprise IT.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 24 | 10 contacts → | ||||
Exact match “Our work is built on two pillars: expert consulting and the operation of proven security solutions.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase | |||||
| 25 | 9 contacts → | ||||
Exact match “ujima ist ein führender Anbieter von Cyber-Sicherheitslösungen.” Recorded in the RevenueBase company graph · Sep 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 “security audit firms”. 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 147 security audit firms based in Germany
See the full list, filter by size, metro and specialty, and access 587 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Security audit firms based in Germany at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 “security audit 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 587 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 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “security audit firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security audit firms are there based in Germany?
RevenueBase identified 147 company matches for security audit 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?
T Security - Dach tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most security audit firms?
Berlin leads with 15 company records, followed by Munich (8) and Bochum (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 587 professional contacts with verified work emails tracked across these 147 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 147 security audit firms based in Germany. Start with a free account, no credit card.
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Browse the directory
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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- Security audit firms based in the United States
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Company intelligence · public preview
Top 25 security audit firms based in Germany
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 147 matching company records for security audit firms based in Germany, with 1,301 tracked contacts and 587 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 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 security audit firms based in Germany
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 |  T Security - Dachsecurity.telekom.deHQ: Bonn, GermanyReported employees: 1,001-5,000 | Bonn, Germany | 1,001-5,000 | Exact match | 363 contacts → |
“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  TÜV Informationstechnik Gmbhtuvit.deHQ: Essen, GermanyReported employees: 51-200 | Essen, Germany | 51-200 | Exact match | 111 contacts → |
“TÜV Informationstechnik GmbH (headquartered in Essen, Germany) is a renowned IT security service provider and an independent testing institute and laboratory for IT security and…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ditis Systemeditis.deHQ: Ulm, GermanyReported employees: 51-200 | Ulm, Germany | 51-200 | Exact match | 69 contacts → |
“ditis - The Security Company!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Prosec Gmbhprosec-networks.comHQ: Mendig, GermanyReported employees: 51-200 | Mendig, Germany | 51-200 | Exact match | 49 contacts → |
“ProSec GmbH verwandelt Unternehmen in digitale Festungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  BDO Cyber Security Gmbhbdosecurity.deHQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 40 contacts → |
“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Trufflepig Forensicstrufflepig-forensics.comHQ: Wolnzach, GermanyReported employees: 51-200 | Wolnzach, Germany | 51-200 | Exact match | 37 contacts → |
“Ihr SOC-Partner im DACH-Mittelstand.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Enbw Cyber Security Gmbhenbw.comHQ: Karlsruhe, GermanyReported employees: 11-50 | Karlsruhe, Germany | 11-50 | Exact match | 22 contacts → |
“Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Sedevo IT Consulting Gmbhsedevo.deHQ: Stuttgart, GermanyReported employees: 11-50 | Stuttgart, Germany | 11-50 | Exact match | 21 contacts → |
“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 description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Schutzwerk Gmbhschutzwerk.comHQ: Ulm, GermanyReported employees: 11-50 | Ulm, Germany | 11-50 | Exact match | 19 contacts → |
“SCHUTZWERK GmbH is an international IT security consultancy.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cure53cure53.deHQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 18 contacts → |
“Cure53 offers classic black-box penetration tests (zero-knowledge) as well as white-box tests and code audits.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Schönbrunn Tasc Gmbhschoenbrunn-tasc.deHQ: Riedwiesenstraße 1, GermanyReported employees: 11-50 | Riedwiesenstraße 1, Germany | 11-50 | Exact match | 18 contacts → |
“Wir sind ein Security House.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Security Risk Solutionssecurityrisksolutions.netHQ: Steinau, GermanyReported employees: 1-10 | Steinau, Germany | 1-10 | Exact match | 17 contacts → |
“Independent firm offering innovative solutions for Managed Security, Information Security & Risk, Business Continuity, Certification (ISO & PCI) and Computer Forensics.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Tengelmann Audit Gmbht-audit.deHQ: Ratingen, GermanyReported employees: 11-50 | Ratingen, Germany | 11-50 | Exact match | 16 contacts → |
“Die Tengelmann Audit GmbH ist eine Prüfungs- und Beratungsgesellschaft mit einem vielfältigen Leistungsportfolio rund um die Themen Datenschutz, IT-Sicherheit und Revision.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Cyber Samurai Gmbhcyber-samurai.netHQ: Vaterstetten, GermanyReported employees: 11-50 | Vaterstetten, Germany | 11-50 | Exact match | 16 contacts → |
“Cyber Samurai GmbH – Ihr IT-Security Dienstleister im Kampf gegen aktuelle Cyberbedrohungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Diesecdiesec.comHQ: Darmstadt, GermanyReported employees: 51-200 | Darmstadt, Germany | 51-200 | Exact match | 16 contacts → |
“DIESEC, founded by Carl Dietzel in 2009, is dedicated to securing your most valuable asset - your data.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Protea Networks Gmbhproteanetworks.deHQ: Unterhaching, GermanyReported employees: 11-50 | Unterhaching, Germany | 11-50 | Exact match | 16 contacts → |
“Protection with Passion Seit über 20 Jahren entwickeln und implementieren wir Sicherheitsstrategien, die den Unternehmenserfolg unserer Kunden in den Mittelpunkt stellen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  OAK Securityoaksecurity.ioHQ: Munich, GermanyReported employees: 11-50 | Munich, Germany | 11-50 | Exact match | 16 contacts → |
“Book.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Whitelisthackerswhitelisthackers.comHQ: Bamberg, GermanyReported employees: 11-50 | Bamberg, Germany | 11-50 | Exact match | 14 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  Digitevo Gmbhdigitevo.deHQ: Wettenberg, GermanyReported employees: 11-50 | Wettenberg, Germany | 11-50 | Exact match | 13 contacts → |
“Unser Versprechen für Ihre Cybersicherheit!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Sequire Technologysequire.deHQ: Saarbrücken, GermanyReported employees: 1-10 | Saarbrücken, Germany | 1-10 | Exact match | 11 contacts → |
“Sicherheit können wir Wir sind sequire (für: security (engl: Sicherheit) und quire (lateinisch: können))!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Auditone Gmbhauditone.ioHQ: Cologne, GermanyReported employees: 11-50 | Cologne, Germany | 11-50 | Exact match | 11 contacts → |
“AuditOne delivers modern audit infrastructure and cybersecurity services built for the teams that set the standard for trust.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Greenhats Gmbhgreenhats.comHQ: Weimar (lahn), GermanyReported employees: 11-50 | Weimar (lahn), Germany | 11-50 | Exact match | 11 contacts → |
“greenhats® is a platform for IT security.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Wallsecwallsec.deHQ: Walldorf, GermanyReported employees: 11-50 | Walldorf, Germany | 11-50 | Exact match | 10 contacts → |
“WALLSEC specializes in penetration testing and security audits for critical enterprise IT.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Portformance Gmbhportformance.deHQ: Neumarkt In Der Oberpfalz, GermanyReported employees: 11-50 | Neumarkt In Der Oberpfalz, Germany | 11-50 | Exact match | 10 contacts → |
“Our work is built on two pillars: expert consulting and the operation of proven security solutions.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ujima Gmbhujima.deHQ: Frankfurt, GermanyReported employees: 11-50 | Frankfurt, Germany | 11-50 | Exact match | 9 contacts → |
“ujima ist ein führender Anbieter von Cyber-Sicherheitslösungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 147 company matches
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Security audit firms: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
147 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.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 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 ↗
Questions about this company list
What does Exact match mean for security audit firms?
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 security audit firms did RevenueBase find based in Germany?
The saved snapshot records 147 matching company records, 1,301 tracked contacts and 587 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 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
Security audit firms by geography
- Security audit firms based in the United States
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- Security audit firms based in Australia
- Security audit firms based in the Netherlands
- Security audit firms based in Spain
- Security audit firms based in Poland
- Security audit firms based in South Africa
- Security audit firms based in Switzerland
- Security audit firms based in Italy
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 security audit firms based in Germany. Snapshot: September 6, 2026. https://revenuebase.ai/companies/security-audit-firms/germany.
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
- Security audit firms based in the United States
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Company intelligence · public preview
Top 25 security audit firms based in Germany
RevenueBase records 147 matching company records for security audit firms based in Germany, with 1,301 tracked contacts and 587 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 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 security audit firms based in Germany
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 | T Security - Dachsecurity.telekom.de HQ: Bonn, GermanyReported employees: 1,001-5,000 | Bonn, Germany | 1,001-5,000 | Exact match | 363 contacts → |
“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | TÜV Informationstechnik Gmbhtuvit.de HQ: Essen, GermanyReported employees: 51-200 | Essen, Germany | 51-200 | Exact match | 111 contacts → |
“TÜV Informationstechnik GmbH (headquartered in Essen, Germany) is a renowned IT security service provider and an independent testing institute and laboratory for IT security and…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ditis Systemeditis.de HQ: Ulm, GermanyReported employees: 51-200 | Ulm, Germany | 51-200 | Exact match | 69 contacts → |
“ditis - The Security Company!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Prosec Gmbhprosec-networks.com HQ: Mendig, GermanyReported employees: 51-200 | Mendig, Germany | 51-200 | Exact match | 49 contacts → |
“ProSec GmbH verwandelt Unternehmen in digitale Festungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | BDO Cyber Security Gmbhbdosecurity.de HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 40 contacts → |
“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Trufflepig Forensicstrufflepig-forensics.com HQ: Wolnzach, GermanyReported employees: 51-200 | Wolnzach, Germany | 51-200 | Exact match | 37 contacts → |
“Ihr SOC-Partner im DACH-Mittelstand.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Enbw Cyber Security Gmbhenbw.com HQ: Karlsruhe, GermanyReported employees: 11-50 | Karlsruhe, Germany | 11-50 | Exact match | 22 contacts → |
“Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sedevo IT Consulting Gmbhsedevo.de HQ: Stuttgart, GermanyReported employees: 11-50 | Stuttgart, Germany | 11-50 | Exact match | 21 contacts → |
“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 description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Schutzwerk Gmbhschutzwerk.com HQ: Ulm, GermanyReported employees: 11-50 | Ulm, Germany | 11-50 | Exact match | 19 contacts → |
“SCHUTZWERK GmbH is an international IT security consultancy.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cure53cure53.de HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 18 contacts → |
“Cure53 offers classic black-box penetration tests (zero-knowledge) as well as white-box tests and code audits.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Schönbrunn Tasc Gmbhschoenbrunn-tasc.de HQ: Riedwiesenstraße 1, GermanyReported employees: 11-50 | Riedwiesenstraße 1, Germany | 11-50 | Exact match | 18 contacts → |
“Wir sind ein Security House.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Security Risk Solutionssecurityrisksolutions.net HQ: Steinau, GermanyReported employees: 1-10 | Steinau, Germany | 1-10 | Exact match | 17 contacts → |
“Independent firm offering innovative solutions for Managed Security, Information Security & Risk, Business Continuity, Certification (ISO & PCI) and Computer Forensics.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Tengelmann Audit Gmbht-audit.de HQ: Ratingen, GermanyReported employees: 11-50 | Ratingen, Germany | 11-50 | Exact match | 16 contacts → |
“Die Tengelmann Audit GmbH ist eine Prüfungs- und Beratungsgesellschaft mit einem vielfältigen Leistungsportfolio rund um die Themen Datenschutz, IT-Sicherheit und Revision.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Cyber Samurai Gmbhcyber-samurai.net HQ: Vaterstetten, GermanyReported employees: 11-50 | Vaterstetten, Germany | 11-50 | Exact match | 16 contacts → |
“Cyber Samurai GmbH – Ihr IT-Security Dienstleister im Kampf gegen aktuelle Cyberbedrohungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Diesecdiesec.com HQ: Darmstadt, GermanyReported employees: 51-200 | Darmstadt, Germany | 51-200 | Exact match | 16 contacts → |
“DIESEC, founded by Carl Dietzel in 2009, is dedicated to securing your most valuable asset - your data.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Protea Networks Gmbhproteanetworks.de HQ: Unterhaching, GermanyReported employees: 11-50 | Unterhaching, Germany | 11-50 | Exact match | 16 contacts → |
“Protection with Passion Seit über 20 Jahren entwickeln und implementieren wir Sicherheitsstrategien, die den Unternehmenserfolg unserer Kunden in den Mittelpunkt stellen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | OAK Securityoaksecurity.io HQ: Munich, GermanyReported employees: 11-50 | Munich, Germany | 11-50 | Exact match | 16 contacts → |
“Book.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Whitelisthackerswhitelisthackers.com HQ: Bamberg, GermanyReported employees: 11-50 | Bamberg, Germany | 11-50 | Exact match | 14 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Digitevo Gmbhdigitevo.de HQ: Wettenberg, GermanyReported employees: 11-50 | Wettenberg, Germany | 11-50 | Exact match | 13 contacts → |
“Unser Versprechen für Ihre Cybersicherheit!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Sequire Technologysequire.de HQ: Saarbrücken, GermanyReported employees: 1-10 | Saarbrücken, Germany | 1-10 | Exact match | 11 contacts → |
“Sicherheit können wir Wir sind sequire (für: security (engl: Sicherheit) und quire (lateinisch: können))!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Auditone Gmbhauditone.io HQ: Cologne, GermanyReported employees: 11-50 | Cologne, Germany | 11-50 | Exact match | 11 contacts → |
“AuditOne delivers modern audit infrastructure and cybersecurity services built for the teams that set the standard for trust.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Greenhats Gmbhgreenhats.com HQ: Weimar (lahn), GermanyReported employees: 11-50 | Weimar (lahn), Germany | 11-50 | Exact match | 11 contacts → |
“greenhats® is a platform for IT security.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Wallsecwallsec.de HQ: Walldorf, GermanyReported employees: 11-50 | Walldorf, Germany | 11-50 | Exact match | 10 contacts → |
“WALLSEC specializes in penetration testing and security audits for critical enterprise IT.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Portformance Gmbhportformance.de HQ: Neumarkt In Der Oberpfalz, GermanyReported employees: 11-50 | Neumarkt In Der Oberpfalz, Germany | 11-50 | Exact match | 10 contacts → |
“Our work is built on two pillars: expert consulting and the operation of proven security solutions.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ujima Gmbhujima.de HQ: Frankfurt, GermanyReported employees: 11-50 | Frankfurt, Germany | 11-50 | Exact match | 9 contacts → |
“ujima ist ein führender Anbieter von Cyber-Sicherheitslösungen.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Security audit firms: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
147 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.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 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 ↗
Questions about this company list
What does Exact match mean for security audit firms?
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 security audit firms did RevenueBase find based in Germany?
The saved snapshot records 147 matching company records, 1,301 tracked contacts and 587 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 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.
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Cite this list
RevenueBase Data Team. Top 25 security audit firms based in Germany. Snapshot: September 6, 2026. https://revenuebase.ai/companies/security-audit-firms/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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