Company lists · Data refreshed September 2026

Top 25 Mckinney top cybersecurity companies based in Germany

RevenueBase identified 217 mckinney top cybersecurity companies headquartered in Germany as of September 2026 and tracks 3,408 professional contacts across them, including 1,098 with verified work emails. Berlin is the largest hub.

This list covers mckinney top cybersecurity companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
217Companies
3,408Contacts tracked
1,098Verified emails
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The 25 largest mckinney top cybersecurity companies based in Germany

Ranked by team size
Top 25 of 217 mckinney top cybersecurity companies based in Germany, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to mckinney top cybersecurity companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceEssen, GermanyHQ checked Sep 21, 20261,001-5,000623 contacts →

Indirect evidence

“secunet – We are the Guardians of Europe's Digital Freedom.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceBochum, GermanyHQ checked Sep 21, 2026501-1,000386 contacts →

Indirect evidence

“Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceBonn, GermanyHQ checked Sep 21, 20261,001-5,000363 contacts →

Indirect evidence

“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceWuppertal, GermanyHQ checked Sep 21, 202651-20079 contacts →

Indirect evidence

“r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceBerlin, GermanyHQ checked Sep 21, 202651-20073 contacts →

Indirect evidence

“SECUINFRA, expert and partner for cyber defense, has specialized in the detection, analysis and defense against cyber attacks since 2010.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceUlm, GermanyHQ checked Sep 21, 202651-20069 contacts →

Indirect evidence

“ditis - The Security Company!”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceMunich, GermanyHQ checked Sep 21, 202651-20065 contacts →

Indirect evidence

“indevis GmbH tritt seit März 2026 unter der neuen Marke Argos Security GmbH auf.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceDüsseldorf, GermanyHQ checked Sep 21, 202651-20054 contacts →

Partial evidence

“water is a cybersecurity company that provides holistic IT security solutions to keep your business safe.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceMendig, GermanyHQ checked Sep 21, 202651-20049 contacts →

Indirect evidence

“ProSec GmbH verwandelt Unternehmen in digitale Festungen.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceGarching, GermanyHQ checked Sep 21, 202651-20046 contacts →

Indirect evidence

“HvS-Consulting AG is consulting large and medium-sized companies on the topic of cyber security since 2002.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceNuremberg, GermanyHQ checked Sep 21, 202651-20045 contacts →

Indirect evidence

“ForeNova helps Small and Medium Enterprises leverage existing cyber security solutions to improve the detection of hidden security threats with greater speed and precision.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceHamburg, GermanyHQ checked Sep 21, 202651-20040 contacts →

Indirect evidence

“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceWolnzach, GermanyHQ checked Sep 21, 202651-20037 contacts →

Indirect evidence

“Ihr SOC-Partner im DACH-Mittelstand.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceNeu-Isenburg, GermanyHQ checked Sep 21, 202651-20034 contacts →

Indirect evidence

“Wir sind die Com-Sys!”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceAugsburg, GermanyHQ checked Sep 21, 202611-5031 contacts →

Indirect evidence

“ausecus GmbH delivers IT-Security Consulting and Managed Services for critical infrastructure organisations (KRITIS).”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceKötz, GermanyHQ checked Sep 21, 202611-5026 contacts →

Indirect evidence

“Die esko-systems GmbH betreut Mittelstands- und Industriekunden in allen Fragen der IT-Sicherheit.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceBremen, GermanyHQ checked Sep 21, 202651-20026 contacts →

Indirect evidence

“Mehr Schutz vor Angriffen aus dem Cyberraum: Cyberkriminalität ist eine der größten Bedrohungen unserer Zeit.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceMartinsried, GermanyHQ checked Sep 21, 202651-20026 contacts →

Indirect evidence

“microCAT ist ein führender Full-Service-Provider für IT-Produkte und -Dienstleistungen mit einem klaren Fokus auf IT-Security.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceUlm, GermanyHQ checked Sep 21, 202651-20024 contacts →

Indirect evidence

“CODE WHITE is specialized in high-end red teaming, continuous attack surface management and threat intelligence since 2014.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceKarlsruhe, GermanyHQ checked Sep 21, 202611-5022 contacts →

Indirect evidence

“Digitale Bedrohungen wachsen – und damit unsere Verantwortung.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceGelsenkirchen, GermanyHQ checked Sep 21, 202611-5021 contacts →

Indirect evidence

“We are a cyber security company based in Gelsenkirchen, Germany.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceBayern, GermanyHQ checked Sep 21, 202651-20019 contacts →

Indirect evidence

“link protect GmbH is an information technology and services company based out of Münchner Straße 92, Kirchseeon, Bavaria, Germany.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceRiedwiesenstraße 1, GermanyHQ checked Sep 21, 202611-5018 contacts →

Indirect evidence

“Wir sind ein Security House.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceVaterstetten, GermanyHQ checked Sep 21, 202611-5016 contacts →

Indirect evidence

“Cyber Samurai GmbH – Ihr IT-Security Dienstleister im Kampf gegen aktuelle Cyberbedrohungen.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceDarmstadt, GermanyHQ checked Sep 21, 202651-20016 contacts →

Indirect evidence

“DIESEC, founded by Carl Dietzel in 2009, is dedicated to securing your most valuable asset - your data.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 217 mckinney top cybersecurity companies based in Germany

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Mckinney top cybersecurity companies based in Germany at a glance

As of Sep 21, 2026
32.2%Verified-email coverage
15.7Average contacts per company
1-10Median size (employees)
11.1%Largest-city concentration · Berlin
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
120
11-50
68
51-200
20
201-500
4
501-1,000
2
1,001-5,000
3

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 217 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among mckinney top cybersecurity companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Germany whose own description of what they do matches “mckinney top cybersecurity companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mckinney top cybersecurity companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among mckinney top cybersecurity companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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
Every listed company carries at least one verified work email, 1,098 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mckinney top cybersecurity companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many mckinney top cybersecurity companies are there based in Germany?

RevenueBase identified 217 mckinney top cybersecurity companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

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 mckinney top cybersecurity companies?

Berlin leads with 24 headquartered companies, followed by Munich (14) and Hamburg (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 1,098 verified decision-maker contacts tracked across these 217 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.