Company lists · Data refreshed September 2026
Top 25 Ics security companies based in Germany
RevenueBase identified 259 ics security companies headquartered in Germany as of September 2026 and tracks 3,711 professional contacts across them, including 1,292 with verified work emails and 62 with mobile numbers. Berlin is the largest hub.
This list covers ics 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, 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.
The 25 largest ics security companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 620 | ||||
“secunet – Protecting Digital Infrastructures secunet is Germany’s leading cybersecurity company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 360 | ||||
“We believe in a secure digital future with minimal risk and maximum opportunities.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 131 | ||||
“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 83 | ||||
“r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 68 | ||||
“ditis - The Security Company!” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | Systema Datentechnik GmbhPartial evidence | 56 | |||
“Systema Datentechnik ist ein führender IT-Dienstleister mit Spezialisierung auf IT-Service Management (ITSM), IT-Security und Managed Services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 55 | ||||
“water is a cybersecurity company that provides holistic IT security solutions to keep your business safe.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 51 | ||||
“Just stronger Cybersecurity - Beratung, Konzeption, Umsetzung und Aufrechterhaltung von Maßnahmen rund um die IT-Security gehört zu unseren Leistungen.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 40 | ||||
“ENTIRETEC delivers Global Managed Services that keep business critical networks and security running 24/7 worldwide.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 40 | ||||
“Wir von B.I.N.S.S.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 | ||||
“As IT security company we protect your electronical stored data against cyber attacks.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 38 | ||||
“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | Communication Systems GmbhIndirect evidence | 36 | |||
“Wir sind die Com-Sys!” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 35 | ||||
“Um Menschen, sensible Unternehmensdaten, Gebäude oder öffentliche Räume effektiv zu schützen, bedarf es ausgeklügelter Sicherheitskonzepte.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 31 | ||||
“ausecus GmbH delivers IT-Security Consulting and Managed Services for critical infrastructure organisations (KRITIS).” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 | ||||
“The newbetech corporate group is proud to be an innovative and professional provider in the ICT and security industry.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 | ||||
“Die esko-systems GmbH betreut Mittelstands- und Industriekunden in allen Fragen der IT-Sicherheit.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 27 | ||||
“Mehr Schutz vor Angriffen aus dem Cyberraum: Cyberkriminalität ist eine der größten Bedrohungen unserer Zeit.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 27 | ||||
“CYQUEO secures digital communication and business processes.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 24 | ||||
“Die im Mai gegründete consistec Engineering & Consulting GmbH ist ein inhabergeführtes mittelständisches Unternehmen mit Sitz in Saarbrücken, Saarland.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 259 ics security companies based in Germany
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Ics security companies based in Germany at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 ics security 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 “ics security 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 ics 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 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, 1,292 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.
Ics security companies by metro
- Ics security companies in Berlin25
Frequently asked
How many ics security companies are there based in Germany?
RevenueBase identified 259 ics 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 ics security companies?
Berlin leads with 25 headquartered companies, followed by Koln (10) and Frankfurt (9).
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 1,292 verified decision-maker contacts tracked across these 259 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.
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