Company lists · Data verified August 2026

Top 25 Computer security companies based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 153 companies tracked

There are 153 computer security companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 3,330 professional contacts across them, including 1,030 with verified work emails and 34 with mobile numbers. Berlin is the largest hub.

This list covers computer security 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.

153Companies

3,330Contacts tracked

1,030Verified emails

34Mobile numbers

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The 25 largest computer security companies based in Germany

Ranked by team size

Top 25 of 153 computer security 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	Secunet Security Networks AG	Essen	1,001-5,000	620	59
2	G Data Cyberdefense	Bochum	501-1,000	389	154
3	Telekom Security	Bonn	1,001-5,000	360	183
4	USD AG	Neu-Isenburg	51-200	131	92
5	Securepoint Gmbh	Potsdam	201-500	111	2
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	Eset Dach	Jena	51-200	62	51
10	Water IT Security & Defense	Dusseldorf	51-200	55	20
11	Drivelock SE	Muenchen	51-200	52	36
12	Concentrade Gmbh	Koln	51-200	51	30
13	Prosec Gmbh	Munchen	51-200	49	29
14	Hvs-Consulting	Garching	51-200	46	27
15	Forenova Technologies Gmbh	Nuremberg	51-200	45	13
16	Consecur Gmbh	Bochum	51-200	38	23
17	DGC AG	Flensburg	51-200	33	13
18	Esko-Systems Gmbh	Kotz	11-50	27	19
19	Enbw Cyber Security Gmbh	Karlsruhe	11-50	22	13
20	Aware7 Gmbh	Gelsenkirchen	11-50	22	6
21	White HAT IT Security	Munich	11-50	18	10
22	Cyber Samurai Gmbh	Vaterstetten	11-50	16	10
23	Karamba Security	Munich	11-50	15	9
24	Agt-Advanced German Technology	Berlin	51-200	15	2
25	Keepbit	Augsburg	11-50	14	5

Showing 25 of 153 computer security companies based in Germany

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Computer security companies based in Germany at a glance

As of Aug 28, 2026

11-50Median size (employees)

BerlinLargest hub · 14 HQs

34Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Computer security companies by metro

Metro	Companies
Computer security companies in Berlin	14
Computer security companies in Munich	9
Computer security companies in Bochum	7
Computer security companies in Munchen	7
Computer security companies in Dusseldorf	5
Computer security companies in Koln	4
Computer security companies in Erfurt	4
Computer security companies in Monheim	3

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 “computer security 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 computer security companies are there based in Germany?

There are 153 computer security companies headquartered in Germany as of August 2026 (RevenueBase).

What is the largest company on this list?

Secunet Security Networks AG, headquartered in Essen, tops this list with the largest team on record.

Which city has the most computer security companies?

Berlin leads with 14 headquartered companies, followed by Munich (9) and Bochum (7).

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 1,030 verified decision-maker contacts tracked across these 153 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.