Company lists · Data verified August 2026

Top 25 Defense cybersecurity companies based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 237 companies tracked

There are 237 defense cybersecurity companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 4,965 professional contacts across them, including 1,180 with verified work emails and 137 with mobile numbers. Berlin is the largest hub.

This list covers defense cybersecurity 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.

237Companies

4,965Contacts tracked

1,180Verified emails

137Mobile numbers

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The 25 largest defense cybersecurity companies based in Germany

Ranked by team size

Top 25 of 237 defense cybersecurity 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	R-Tec IT Security Gmbh	Wuppertal	51-200	83	47
8	Ditis Systeme	Heidenheim An Der Brenz	51-200	68	37
9	Knodtec Solutions Private Limited	Cologne	51-200	64	21
10	Water IT Security & Defense	Dusseldorf	51-200	55	20
11	Prosec Gmbh	Munchen	51-200	49	29
12	Hvs-Consulting	Garching	51-200	46	27
13	Aegis IT Research	Braunschweig	11-50	41	1
14	BDO Cyber Security Gmbh	Dusseldorf	51-200	38	19
15	Communication Systems Gmbh	Neu-Isenburg	51-200	36	21
16	DGC AG	Flensburg	51-200	33	13
17	Allgeier Cyris Gmbh	Bremen	51-200	27	14
18	Cyqueo	Munchen	11-50	27	13
19	Code White Gmbh	Ulm	51-200	24	16
20	Aware7 Gmbh	Gelsenkirchen	11-50	22	6
21	Systemhaus For YOU Gmbh	Hamburg	11-50	20	12
22	Netkom Gmbh	Osnabruck	11-50	19	11
23	Agt-Advanced German Technology	Berlin	51-200	15	2
24	Securnite Gmbh	Dusseldorf	11-50	13	9
25	Artada Gmbh	Werl	11-50	13	8

Showing 25 of 237 defense cybersecurity companies based in Germany

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Defense cybersecurity companies based in Germany at a glance

As of Aug 28, 2026

11-50Median size (employees)

BerlinLargest hub · 24 HQs

137Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

115

11-50

51-200

201-500

501-1,000

1,001-5,000

Defense cybersecurity companies by metro

Metro	Companies
Defense cybersecurity companies in Berlin	24
Defense cybersecurity companies in Munich	14
Defense cybersecurity companies in Munchen	9
Defense cybersecurity companies in Hamburg	8
Defense cybersecurity companies in Dusseldorf	7
Defense cybersecurity companies in Bochum	7
Defense cybersecurity companies in Frankfurt	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 “defense cybersecurity 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; 2 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 defense cybersecurity companies are there based in Germany?

There are 237 defense cybersecurity 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 defense cybersecurity companies?

Berlin leads with 24 headquartered companies, followed by Munich (14) and Munchen (9).

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 1,180 verified decision-maker contacts tracked across these 237 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.