Company lists · Data verified August 2026

Top 25 Cybersecurity defense companies based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 411 companies tracked

There are 411 cybersecurity defense companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 6,142 professional contacts across them, including 1,900 with verified work emails and 155 with mobile numbers. Berlin is the largest hub.

This list covers cybersecurity defense 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.

411Companies

6,142Contacts tracked

1,900Verified emails

155Mobile numbers

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The 25 largest cybersecurity defense companies based in Germany

Ranked by team size

Top 25 of 411 cybersecurity defense 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	MTI	Munchen	201-500	762	75
2	Secunet Security Networks AG	Essen	1,001-5,000	620	59
3	G Data Cyberdefense	Bochum	501-1,000	389	154
4	Telekom Security	Bonn	1,001-5,000	360	183
5	USD AG	Neu-Isenburg	51-200	131	92
6	Rohde & Schwarz Cybersecurity	Munchen	201-500	98	40
7	SEC Consult Group	Bochum	201-500	98	36
8	R-Tec IT Security Gmbh	Wuppertal	51-200	83	47
9	Secuinfra Gmbh	Berlin	51-200	71	44
10	Indevis Gmbh	Munich	51-200	70	36
11	Syss Gmbh	Frankfurt	51-200	70	6
12	Ditis Systeme	Heidenheim An Der Brenz	51-200	68	37
13	Enginsight Gmbh	Jena	51-200	65	43
14	Knodtec Solutions Private Limited	Cologne	51-200	64	21
15	Mispa Technologies Gmbh	Langenfeld Rheinland	51-200	63	23
16	Eset Dach	Jena	51-200	62	51
17	Water IT Security & Defense	Dusseldorf	51-200	55	20
18	Blaze Information Security	Berlin	51-200	51	30
19	Concentrade Gmbh	Koln	51-200	51	30
20	Medialine Security	Stuttgart	51-200	51	19
21	Prosec Gmbh	Munchen	51-200	49	29
22	Hvs-Consulting	Garching	51-200	46	27
23	Forenova Technologies Gmbh	Nuremberg	51-200	45	13
24	Consecur Gmbh	Bochum	51-200	38	23
25	BDO Cyber Security Gmbh	Dusseldorf	51-200	38	19

Showing 25 of 411 cybersecurity defense companies based in Germany

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Cybersecurity defense companies based in Germany at a glance

As of Aug 28, 2026

1-10Median size (employees)

BerlinLargest hub · 41 HQs

155Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

221

11-50

137

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity defense companies by metro

Metro	Companies
Cybersecurity defense companies in Berlin	41
Cybersecurity defense companies in Munich	24
Cybersecurity defense companies in Koln	15
Cybersecurity defense companies in Hamburg	15
Cybersecurity defense companies in Frankfurt	12
Cybersecurity defense companies in Dusseldorf	11
Cybersecurity defense companies in Munchen	10
Cybersecurity defense companies in Stuttgart	8

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 defense 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; 5 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 defense companies are there based in Germany?

There are 411 cybersecurity defense companies headquartered in Germany as of August 2026 (RevenueBase).

What is the largest company on this list?

MTI, headquartered in Munchen, tops this list with the largest team on record.

Which city has the most cybersecurity defense companies?

Berlin leads with 41 headquartered companies, followed by Munich (24) and Koln (15).

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 1,900 verified decision-maker contacts tracked across these 411 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.