Company lists · Data verified August 2026

Top 25 Cybersecurity audit companies based in Germany

Name: Cybersecurity audit companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 280 companies tracked

There are 280 cybersecurity audit companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 3,128 professional contacts across them, including 1,151 with verified work emails and 40 with mobile numbers. Berlin is the largest hub.

This list covers cybersecurity audit companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

280Companies

3,128Contacts tracked

1,151Verified emails

40Mobile numbers

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The 25 largest cybersecurity audit companies based in Germany

Ranked by team size

Top 25 of 280 cybersecurity audit companies based in Germany, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	G Data Cyberdefense	Bochum	501-1,000	389	154
2	Telekom Security	Bonn	1,001-5,000	360	183
3	USD AG	Neu-Isenburg	51-200	131	92
4	TÜV Informationstechnik Gmbh	Essen	51-200	110	60
5	SEC Consult Group	Bochum	201-500	98	36
6	Syss Gmbh	Frankfurt	51-200	70	6
7	Ditis Systeme	Heidenheim An Der Brenz	51-200	68	37
8	Blaze Information Security	Berlin	51-200	51	30
9	Prosec Gmbh	Munchen	51-200	49	29
10	Hvs-Consulting	Garching	51-200	46	27
11	BDO Cyber Security Gmbh	Dusseldorf	51-200	38	19
12	Cloudyrion	Dusseldorf	11-50	31	16
13	MGM Security Partners Gmbh	Cologne	11-50	28	12
14	ETL Consit Gmbh	Bad Oldesloe	11-50	23	10
15	Aware7 Gmbh	Gelsenkirchen	11-50	22	6
16	Sedevo IT Consulting Gmbh	Bergisch Gladbach	11-50	21	8
17	Schutzwerk Gmbh	Hamburg	11-50	20	4
18	OAK Security	Munich	11-50	19	9
19	Audatis Group	Herford	11-50	19	9
20	Cure53	Berlin	11-50	18	9
21	Nside Attack Logic Gmbh	Munchen	11-50	16	11
22	Protea Networks Gmbh	Unterhaching	11-50	16	8
23	Whitelisthackers	Bamberg	11-50	14	5
24	Keepbit	Augsburg	11-50	14	5
25	Artada Gmbh	Werl	11-50	13	8

Showing 25 of 280 cybersecurity audit companies based in Germany

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Cybersecurity audit companies based in Germany at a glance

As of Aug 28, 2026

1-10Median size (employees)

BerlinLargest hub · 35 HQs

40Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

170

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity audit companies by metro

Metro	Companies
Cybersecurity audit companies in Berlin	35
Cybersecurity audit companies in Munich	18
Cybersecurity audit companies in Frankfurt	13
Cybersecurity audit companies in Hamburg	10
Cybersecurity audit companies in Bochum	9
Cybersecurity audit companies in Munchen	6
Cybersecurity audit companies in Dusseldorf	6

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity audit companies”, with match quality audited by blind human judging, and headquartered in Germany.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity audit companies are there based in Germany?

There are 280 cybersecurity audit companies headquartered in Germany as of August 2026 (RevenueBase).

What is the largest company on this list?

G Data Cyberdefense, headquartered in Bochum, tops this list with the largest team on record.

Which city has the most cybersecurity audit companies?

Berlin leads with 35 headquartered companies, followed by Munich (18) and Frankfurt (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,151 verified decision-maker contacts tracked across these 280 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.