Company lists · Data verified August 2026

Top 25 Cybersecurity incident response based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 146 companies tracked

There are 146 cybersecurity incident response headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 2,061 professional contacts across them, including 843 with verified work emails and 32 with mobile numbers. Berlin is the largest hub.

This list covers cybersecurity incident response 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.

146Companies

2,061Contacts tracked

843Verified emails

32Mobile numbers

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The 25 largest cybersecurity incident response based in Germany

Ranked by team size

Top 25 of 146 cybersecurity incident response 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	R-Tec IT Security Gmbh	Wuppertal	51-200	83	47
4	Secuinfra Gmbh	Berlin	51-200	71	44
5	Indevis Gmbh	Munich	51-200	70	36
6	Syss Gmbh	Frankfurt	51-200	70	6
7	Ditis Systeme	Heidenheim An Der Brenz	51-200	68	37
8	Water IT Security & Defense	Dusseldorf	51-200	55	20
9	Prosec Gmbh	Munchen	51-200	49	29
10	Forenova Technologies Gmbh	Nuremberg	51-200	45	13
11	BDO Cyber Security Gmbh	Dusseldorf	51-200	38	19
12	Cirosec Gmbh	Heilbronn	51-200	36	23
13	Communication Systems Gmbh	Neu-Isenburg	51-200	36	21
14	Enbw Cyber Security Gmbh	Karlsruhe	11-50	22	13
15	Link Protect Gmbh	Furth	51-200	21	17
16	Cyber Samurai Gmbh	Vaterstetten	11-50	16	10
17	Cyber Curriculum	Berlin	11-50	14	9
18	Whitelisthackers	Bamberg	11-50	14	5
19	Keepbit	Augsburg	11-50	14	5
20	Securnite Gmbh	Dusseldorf	11-50	13	9
21	Artada Gmbh	Werl	11-50	13	8
22	Phalanx-It Gmbh	Nurnberg	11-50	12	7
23	Code Blue By Dussmann	Frankfurt Am Main	11-50	12	1
24	Priomni AG	Aachen	11-50	11	5
25	Portformance Gmbh	Neumarkt In Der Oberpfalz	11-50	10	6

Showing 25 of 146 cybersecurity incident response based in Germany

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Cybersecurity incident response based in Germany at a glance

As of Aug 28, 2026

1-10Median size (employees)

BerlinLargest hub · 17 HQs

32Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

Cybersecurity incident response by metro

Metro	Companies
Cybersecurity incident response in Berlin	17
Cybersecurity incident response in Munich	6
Cybersecurity incident response in Dusseldorf	6
Cybersecurity incident response in Hamburg	5
Cybersecurity incident response in Frankfurt	5
Cybersecurity incident response in Frankfurt Am Main	4
Cybersecurity incident response in Munchen	4

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 incident response”, 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; 3 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 incident response are there based in Germany?

There are 146 cybersecurity incident response 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 incident response?

Berlin leads with 17 headquartered companies, followed by Munich (6) and Dusseldorf (6).

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 843 verified decision-maker contacts tracked across these 146 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.