Company lists · Data refreshed September 2026

Top 25 Industrial cybersecurity companies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 183 companies tracked

RevenueBase identified 183 industrial cybersecurity companies headquartered in Germany as of September 2026 and tracks 3,664 professional contacts across them, including 1,269 with verified work emails and 61 with mobile numbers. Berlin is the largest hub.

This list covers industrial 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

183Companies

3,664Contacts tracked

1,269Verified emails

61Mobile numbers

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The 25 largest industrial cybersecurity companies based in Germany

Ranked by team size

Top 25 of 183 industrial cybersecurity companies based in Germany, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names industrial cybersecurity companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Secunet Security Networks AGPartial evidence	Essen, GermanyHQ checked Sep 3, 2026	1,001-5,000	620
	“secunet – Protecting Digital Infrastructures secunet is Germany’s leading cybersecurity company.” Source: company website · checked Sep 3, 2026
2	G Data CyberdefensePartial evidence	Bochum, GermanyHQ checked Sep 3, 2026	501-1,000	389
	“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: company website · checked Sep 3, 2026
3	Telekom SecurityIndirect evidence	Bonn, GermanyHQ checked Sep 3, 2026	1,001-5,000	360
	“We believe in a secure digital future with minimal risk and maximum opportunities.” Source: company website · checked Sep 3, 2026
4	USD AGIndirect evidence	Neu-isenburg, GermanyHQ checked Sep 3, 2026	51-200	131
	“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.” Source: company website · checked Sep 3, 2026
5	Rohde & Schwarz CybersecurityPartial evidence	Munchen, GermanyHQ checked Sep 3, 2026	201-500	98
	“Rohde & Schwarz Cybersecurity is a leading IT security company that protects companies and public institutions around the world against cyberattacks.” Source: company website · checked Sep 3, 2026
6	R-Tec IT Security GmbhIndirect evidence	Wuppertal, GermanyHQ checked Sep 3, 2026	51-200	83
	“r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.” Source: company website · checked Sep 3, 2026
7	Secuinfra GmbhIndirect evidence	Berlin, GermanyHQ checked Sep 3, 2026	51-200	71
	“SECUINFRA, expert and partner for cyber defense, has specialized in the detection, analysis and defense against cyber attacks since 2010.” Source: company website · checked Sep 3, 2026
8	Enginsight GmbhPartial evidence	Jena, GermanyHQ checked Sep 3, 2026	51-200	65
	“Enginsight ist die praxisnahe und effiziente Cybersecurity Plattform aus Deutschland, für mittelständische Unternehmen, KRITIS und öffentliche Träger.” Source: company website · checked Sep 3, 2026
9	Eset DachIndirect evidence	Jena, GermanyHQ checked Sep 3, 2026	51-200	62
	“ESET ist ein europäischer IT-Sicherheitshersteller mit Hauptsitz in Bratislava (Slowakei).” Source: company website · checked Sep 3, 2026
10	Water IT Security & DefensePartial evidence	Düsseldorf, GermanyHQ checked Sep 3, 2026	51-200	55
	“water is a cybersecurity company that provides holistic IT security solutions to keep your business safe.” Source: company website · checked Sep 3, 2026
11	Prosec GmbhIndirect evidence	Mendig, GermanyHQ checked Sep 3, 2026	51-200	49
	“ProSec GmbH verwandelt Unternehmen in digitale Festungen.” Source: company website · checked Sep 3, 2026
12	Triovega GmbhIndirect evidence	Lubeck, GermanyHQ checked Sep 3, 2026	51-200	46
	“We are a leading provider for production security and efficiency.” Source: company website · checked Sep 3, 2026
13	EntiretecIndirect evidence	Dresden, GermanyHQ checked Sep 3, 2026	51-200	40
	“ENTIRETEC delivers Global Managed Services that keep business critical networks and security running 24/7 worldwide.” Source: company website · checked Sep 3, 2026
14	BDO Cyber Security GmbhIndirect evidence	Hamburg, GermanyHQ checked Sep 3, 2026	51-200	38
	“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Source: company website · checked Sep 3, 2026
15	Admeritia GmbhPartial evidence	Langenfeld, GermanyHQ checked Sep 3, 2026	11-50	37
	“As an owner-managed company, admeritia GmbH turned to industrial IT security shortly after its foundation in 2004.” Source: company website · checked Sep 3, 2026
16	OnekeyPartial evidence	Dusseldorf, GermanyHQ checked Sep 3, 2026	11-50	34
	“ONEKEY is the leading European platform for automated security & compliance analysis for industrial (IIoT & ICS), manufacturing (OT) and Internet of Things (IoT) devices.” Source: company website · checked Sep 3, 2026
17	Sama Partners Business Solutions GmbhIndirect evidence	Mannheim, GermanyHQ checked Sep 3, 2026	51-200	33
	“SAMA PARTNERS Business Solutions ist ein unabhängiges Beratungs- und Engineering-Unternehmen mit Hauptsitz in Mannheim, mit den Schwerpunkten Informationssicherheit, KI und…” Source: company website · checked Sep 3, 2026
18	Ausecus GmbhIndirect evidence	Augsburg, GermanyHQ checked Sep 3, 2026	11-50	31
	“ausecus GmbH delivers IT-Security Consulting and Managed Services for critical infrastructure organisations (KRITIS).” Source: company website · checked Sep 3, 2026
19	Rhebo OT & Iiot SecurityStrong evidence	Leipzig, GermanyHQ checked Sep 3, 2026	11-50	27
	“Rhebo provides simple and effective cybersecurity solutions for Operational Technology and distributed industrial assets for the energy sector, critical infrastructure and…” Source: company website · checked Sep 3, 2026
20	Allgeier Cyris GmbhIndirect evidence	Bremen, GermanyHQ checked Sep 3, 2026	51-200	27
	“Mehr Schutz vor Angriffen aus dem Cyberraum: Cyberkriminalität ist eine der größten Bedrohungen unserer Zeit.” Source: company website · checked Sep 3, 2026
21	Physec GmbhIndirect evidence	Bochum, GermanyHQ checked Sep 3, 2026	51-200	25
	“PHYSEC stands for pioneering solutions in secure digitalisation.” Source: company website · checked Sep 3, 2026
22	Kentix GmbhIndirect evidence	Idar-Oberstein, GermanyHQ checked Sep 3, 2026	51-200	23
	“Security technology goes SIMPLE and DIGITAL Every company has a need for physical security.” Source: company website · checked Sep 3, 2026
23	MB Connect Line GmbhPartial evidence	Dinkelsbuhl, GermanyHQ checked Sep 3, 2026	11-50	22
	“Als starke Marke umfasst das MB connect line Portfolio die Bereiche Sichere Fernwartung, IIoT & Industrial Security.” Source: company website · checked Sep 3, 2026
24	Enbw Cyber Security GmbhIndirect evidence	Karlsruhe, GermanyHQ checked Sep 3, 2026	11-50	22
	“Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Source: company website · checked Sep 3, 2026
25	Aware7 GmbhIndirect evidence	Gelsenkirchen, GermanyHQ checked Sep 3, 2026	11-50	22
	“We are a cyber security company based in Gelsenkirchen, Germany.” Source: company website · checked Sep 3, 2026

Showing 25 of 183 industrial cybersecurity companies based in Germany

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Industrial cybersecurity companies based in Germany at a glance

As of Sep 3, 2026

11-50Median size (employees)

BerlinLargest hub · 16 HQs

61Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

61–90

749

90–180

420

180+

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 industrial cybersecurity companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “industrial cybersecurity companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among industrial 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 an evidence 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, 1,269 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 3, 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

How many industrial cybersecurity companies are there based in Germany?

RevenueBase identified 183 industrial 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 industrial cybersecurity companies?

Berlin leads with 16 headquartered companies, followed by Koln (8) and Munich (8).

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 1,269 verified decision-maker contacts tracked across these 183 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 3, 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 SmartSearch, 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.