Company lists · Data verified August 2026

Top 25 Cybersecurity firms based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 813 companies tracked

There are 813 cybersecurity firms headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 9,620 professional contacts across them, including 3,564 with verified work emails and 212 with mobile numbers. Berlin is the largest hub.

This list covers cybersecurity firms 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.

813Companies

9,620Contacts tracked

3,564Verified emails

212Mobile numbers

Unlock all 813 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity firms based in Germany

Ranked by team size

Top 25 of 813 cybersecurity firms 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	Hornetsecurity	Darmstadt	501-1,000	474	335
3	G Data Cyberdefense	Bochum	501-1,000	389	154
4	Telekom Security	Bonn	1,001-5,000	360	183
5	Onapsis	Heidelberg	201-500	338	187
6	Infinigate Deutschland	Haar	201-500	241	143
7	STOÏK	Munich	51-200	141	94
8	USD AG	Neu-Isenburg	51-200	131	92
9	Securepoint Gmbh	Potsdam	201-500	111	2
10	TÜV Informationstechnik Gmbh	Essen	51-200	110	60
11	Rohde & Schwarz Cybersecurity	Munchen	201-500	98	40
12	SEC Consult Group	Bochum	201-500	98	36
13	Exclusive Networks Deutschland Gmbh	Munster	51-200	85	45
14	R-Tec IT Security Gmbh	Wuppertal	51-200	83	47
15	8com Gmbh & Co. KG	Neustadt An Der Weinstrasse	51-200	78	46
16	Myra Security Gmbh	Munchen	51-200	74	40
17	Secuinfra Gmbh	Berlin	51-200	71	44
18	Indevis Gmbh	Munich	51-200	70	36
19	Syss Gmbh	Frankfurt	51-200	70	6
20	SRC Security Research And Consulting Gmbh	Bonn	51-200	69	43
21	Ditis Systeme	Heidenheim An Der Brenz	51-200	68	37
22	Enginsight Gmbh	Jena	51-200	65	43
23	Knodtec Solutions Private Limited	Cologne	51-200	64	21
24	Eset Dach	Jena	51-200	62	51
25	Agentur FÜR Innovation In DER Cybersicherheit Gmbh Cyberagentur	Dresden	51-200	59	41

Showing 25 of 813 cybersecurity firms based in Germany

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,564 reachable decision-makers.

Free account · no credit card

See all 813 companies

Cybersecurity firms based in Germany at a glance

As of Aug 28, 2026

1-10Median size (employees)

BerlinLargest hub · 84 HQs

212Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

459

11-50

248

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity firms by metro

Metro	Companies
Cybersecurity firms in Berlin	84
Cybersecurity firms in Munich	40
Cybersecurity firms in Hamburg	29
Cybersecurity firms in Koln	26
Cybersecurity firms in Munchen	22
Cybersecurity firms in Dusseldorf	20
Cybersecurity firms in Frankfurt	19

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 firms”, 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; 7 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 firms are there based in Germany?

There are 813 cybersecurity firms 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 cybersecurity firms?

Berlin leads with 84 headquartered companies, followed by Munich (40) and Hamburg (29).

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 3,564 verified decision-maker contacts tracked across these 813 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.

Ready to reach these companies? Verified emails and direct dials for all 813 cybersecurity firms based in Germany. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity firms by geography

Browse the directory

Browse: Companies home · All Germany lists · All Cybersecurity firms lists · New lists

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.