Company lists · Data refreshed November 2026

Top 25 IT audit services based in Germany

RevenueBase identified 133 company matches for IT audit services associated with Germany as of November 2026 and tracks 794 professional contacts across them, including 357 with verified work emails. Berlin is the largest hub.

This list covers company matches for IT audit services 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 November 5, 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 Nov 5, 2026 How this list was built
133Companies
794Contacts tracked
357Verified emails
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The 25 largest IT audit services based in Germany

Ranked by team size
Top 25 of 133 company matches for IT audit services based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchNeu-isenburg, GermanyHQ recorded Nov 5, 202651-200134 contacts →

Exact match

“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchBerlin, GermanyHQ recorded Nov 5, 202611-5030 contacts →

Exact match

“A passionate approach to technology combined with solid digital skills and expertise is our answer to the constant new challenges arising in the world of information technology.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBad Oldesloe, GermanyHQ recorded Nov 5, 202611-5027 contacts →

Exact match

“Die ETL consit ist eines der bundesweit führenden Beratungsunternehmen in den Bereichen Betriebs- und IT-Revision.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchUlm, GermanyHQ recorded Nov 5, 202611-5022 contacts →

Exact match

“SCHUTZWERK GmbH is an international IT security consultancy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchCologne, GermanyHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“ü, ä Regulatorische Vorgaben wie DORA und NIS2, zunehmende Cyber-Risiken und steigender Kostendruck erfordern präzises Handeln.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchHerford, GermanyHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Ihr zuverlässiger Partner für Consulting, Training und Services im Bereich Datenschutz und Informationssicherheit.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchRatingen, GermanyHQ recorded Nov 5, 202611-5019 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 · Nov 5, 2026 · View company records in RevenueBase
8Exact matchSteinau, GermanyHQ recorded Nov 5, 20261-1018 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 · Nov 5, 2026 · View company records in RevenueBase
9Exact matchDeidesheim, GermanyHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“Die Basec GmbH unterstützt Unternehmen bei der Umsetzung ihrer IT-Souveränität, um so erfolgreich Cyberattacken zu verhindern und den Geschäftsablauf zu sichern.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchFrankfurt, GermanyHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“Die Cybrex wurde 2019 mit dem Ziel gegründet eine auf Fach- und Expertenwissen basierte Managementberatung langfristig im Umfeld der Informationssicherheit sowie IT-Compliance zu…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchBuchholz In Der Nordheide, GermanyHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“TEDESIO – IT-Sachverständigenbüro für IT-Sicherheit, Datenschutz & IT-Forensik – zertifiziert, unabhängig & kompetent Über uns: TEDESIO ist Ihr unabhängiger Partner für…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchAachen, GermanyHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“IT-Sicherheit ist unser Spezialgebiet.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchBremen, GermanyHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“FIRST PRIVACY is member of the DSN GROUP – a leading provider of services for the management and assessment of corporate data protection.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchDachau, GermanyHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“Die ituso GmbH ist ein IT-Unternehmen mit den Schwerpunkten Datenschutz, Informationssicherheit und IT-Projektmanagement.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchRegensburg, GermanyHQ recorded Nov 5, 202651-20010 contacts →

Exact match

“Wir sind die P29 Group – spezialisiert auf Sicherheit in der Digitalisierung.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchWeimar (lahn), GermanyHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“greenhats® is a platform for IT security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchMörfelden-walldorf, GermanyHQ recorded Nov 5, 202611-509 contacts →

Exact match

“ISW – das + für Ihr Unternehmen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchHamburg, GermanyHQ recorded Nov 5, 20261-109 contacts →

Exact match

“IT-Sicherheit im Mittelstand?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchCologne, GermanyHQ recorded Nov 5, 202611-509 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 · Nov 5, 2026 · View company records in RevenueBase
20Exact matchLeipzig, GermanyHQ recorded Nov 5, 202611-508 contacts →

Exact match

“SigeniuS is a rapidly growing cybersecurity company that focuses on providing expert consulting and services in IT security, IT risk management, DORA, NIS2, and IAM - nationwide…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchLimburg An Der Lahn, GermanyHQ recorded Nov 5, 202611-508 contacts →

Exact match

“Die b-pi sec GmbH ist ihr qualifizierter Partner in den Bereichen Informationssicherheit, Datenschutz, Prozessmanagement und Compliance.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchCastrop-rauxel, GermanyHQ recorded Nov 5, 20261-108 contacts →

Exact match

“Der sichere Weg für IT, Informationssicherheit und Datenschutz“ ist für das Team der cas_data GmbH nicht eine Floskel.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchLangenhagen, GermanyHQ recorded Nov 5, 202611-507 contacts →

Exact match

“Die interev GmbH ist Ihr starker und verlässlicher Partner im Bereich Datenschutz und IT-Revision.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchMaintal, GermanyHQ recorded Nov 5, 202611-507 contacts →

Exact match

“CyStrat Services GmbH was founded in 2022 with the clear vision of delivering first-class consulting services in the field of cybersecurity, built on a strong foundation of IT…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchRosenheim, GermanyHQ recorded Nov 5, 202611-507 contacts →

Exact match

“neto consulting is an it und services company based out of Prinzregentenstraße 7, Rosenheim, Bayern, Germany.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 133 IT audit services based in Germany

See the full list, filter by size, metro and specialty, and access 357 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT audit services based in Germany at a glance

As of Nov 5, 2026
45.0%Verified-email coverage
6.0Average contacts per company
1-10Median size (employees)
6.8%Largest-city concentration · Berlin
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
87
11-50
39
51-200
4
201-500
1

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 133 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 “IT audit services” 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 357 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 5, 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 “IT audit services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT audit services are there based in Germany?

RevenueBase identified 133 company matches for IT audit services associated with Germany as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

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

Which city has the most IT audit services?

Berlin leads with 9 company records, followed by Munich (8) and Dusseldorf (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 357 professional contacts with verified work emails tracked across these 133 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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.