Company lists · Data refreshed September 2026

Top 25 Industrial network security companies based in Germany

RevenueBase identified 151 industrial network security companies headquartered in Germany as of September 2026 and tracks 3,091 professional contacts across them, including 1,183 with verified work emails. Berlin is the largest hub.

This list covers industrial network security 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 28, 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 28, 2026 86% judged on-target in blind review
151Companies
3,091Contacts tracked
1,183Verified emails
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The 25 largest industrial network security companies based in Germany

Ranked by team size
Top 25 of 151 industrial network security companies based in Germany, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to industrial network security 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 28, 20261,001-5,000623 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceBochum, GermanyHQ checked Sep 28, 2026501-1,000386 contacts →

Partial 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 28, 2026
3Indirect evidenceBonn, GermanyHQ checked Sep 28, 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 28, 2026
4Indirect evidenceNeu-isenburg, GermanyHQ checked Sep 28, 202651-200130 contacts →

Indirect evidence

“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceMunich, GermanyHQ checked Sep 28, 2026201-50096 contacts →

Partial evidence

“Rohde & Schwarz Cybersecurity is a leading IT security company that protects companies and public institutions around the world against cyberattacks.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceWuppertal, GermanyHQ checked Sep 28, 202651-20079 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceJena, GermanyHQ checked Sep 28, 202651-20065 contacts →

Indirect evidence

“Enginsight ist die praxisnahe und effiziente Cybersecurity Plattform aus Deutschland, für mittelständische Unternehmen, KRITIS und öffentliche Träger.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceDüsseldorf, GermanyHQ checked Sep 28, 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 28, 2026
9Partial evidenceLübeck, GermanyHQ checked Sep 28, 202651-20045 contacts →

Partial evidence

“We are a leading provider for production security and efficiency.”

Source: RevenueBase Database · checked Sep 28, 2026
10Strong evidenceDresden, GermanyHQ checked Sep 28, 202651-20040 contacts →

Strong evidence

“ENTIRETEC delivers Global Managed Services that keep business critical networks and security running 24/7 worldwide.”

Source: RevenueBase Database · checked Sep 28, 2026
11Strong evidenceRegensburg, GermanyHQ checked Sep 28, 202651-20040 contacts →

Strong evidence

“Secure communication and networking of data in industrial applications - this is the core competence of INSYS icom.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceMeppen, GermanyHQ checked Sep 28, 202651-20039 contacts →

Partial evidence

“As IT security company we protect your electronical stored data against cyber attacks.”

Source: RevenueBase Database · checked Sep 28, 2026
13Strong evidenceLangenfeld, GermanyHQ checked Sep 28, 202611-5037 contacts →

Strong evidence

“As an owner-managed company, admeritia GmbH turned to industrial IT security shortly after its foundation in 2004.”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceBerlin, GermanyHQ checked Sep 28, 202651-20037 contacts →

Partial evidence

“macmon, one of Belden’s connected brands, makes complete network transparency and control possible by monitoring and protecting against unauthorized access.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceMannheim, GermanyHQ checked Sep 28, 202651-20033 contacts →

Indirect evidence

“SAMA PARTNERS Business Solutions ist ein unabhängiges Beratungs- und Engineering-Unternehmen mit Hauptsitz in Mannheim, mit den Schwerpunkten Informationssicherheit, KI und…”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceAugsburg, GermanyHQ checked Sep 28, 202611-5031 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceLeipzig, GermanyHQ checked Sep 28, 202611-5027 contacts →

Partial evidence

“Rhebo provides simple and effective cybersecurity solutions for Operational Technology and distributed industrial assets for the energy sector, critical infrastructure and…”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceKötz, GermanyHQ checked Sep 28, 202611-5026 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceBremen, GermanyHQ checked Sep 28, 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 28, 2026
20Indirect evidenceMünchen, GermanyHQ checked Sep 28, 202611-5026 contacts →

Indirect evidence

“CYQUEO secures digital communication and business processes.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceBonn, GermanyHQ checked Sep 28, 202611-5025 contacts →

Partial evidence

“Over the last 20 years, unival group has become one of the leading integrators and solution providers for complex and redundant security systems for the protection of public and…”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceBochum, GermanyHQ checked Sep 28, 202651-20025 contacts →

Indirect evidence

“PHYSEC stands for pioneering solutions in secure digitalisation.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceLöhne, GermanyHQ checked Sep 28, 202651-20023 contacts →

Indirect evidence

“digit solutions GmbH is a leading German company in the field of cybersecurity, founded in 1995.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceIdar-oberstein, GermanyHQ checked Sep 28, 202651-20023 contacts →

Partial evidence

“Security technology goes SIMPLE and DIGITAL Every company has a need for physical security.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceSaarbruecken, GermanyHQ checked Sep 28, 202651-20023 contacts →

Indirect evidence

“Die im Mai gegründete consistec Engineering & Consulting GmbH ist ein inhabergeführtes mittelständisches Unternehmen mit Sitz in Saarbrücken, Saarland.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 151 industrial network security companies based in Germany

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Industrial network security companies based in Germany at a glance

As of Sep 28, 2026
38.3%Verified-email coverage
20.5Average contacts per company
11-50Median size (employees)
7.9%Largest-city concentration · Berlin
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
54
11-50
63
51-200
23
201-500
3
501-1,000
3
1,001-5,000
5

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 151 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 industrial network security 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 “industrial network security 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 industrial network security 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 industrial network security 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, 1,183 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 28, 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 industrial network security 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 industrial network security companies are there based in Germany?

RevenueBase identified 151 industrial network security 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 network security companies?

Berlin leads with 12 headquartered companies, followed by Munchen (8) and Koln (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 1,183 verified decision-maker contacts tracked across these 151 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 28, 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.