Company lists · Data refreshed September 2026

Top 25 Utility cybersecurity companies based in Germany

RevenueBase identified 132 utility cybersecurity companies headquartered in Germany as of September 2026 and tracks 2,738 professional contacts across them, including 1,054 with verified work emails and 33 with mobile numbers. Berlin is the largest hub.

This list covers utility 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 6, 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 6, 2026 86% judged on-target in blind review
132Companies
2,738Contacts tracked
1,054Verified emails
33Mobile numbers
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The 25 largest utility cybersecurity companies based in Germany

Ranked by team size
Top 25 of 132 utility cybersecurity companies based in Germany, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to utility 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 6, 20261,001-5,000623 contacts →

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

Source: company website · checked Sep 6, 2026
2Indirect evidenceBochum, GermanyHQ checked Sep 6, 2026501-1,000386 contacts →

“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 6, 2026
3Indirect evidenceBonn, GermanyHQ checked Sep 6, 20261,001-5,000363 contacts →

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

Source: company website · checked Sep 6, 2026
4Indirect evidenceNeu-isenburg, GermanyHQ checked Sep 6, 202651-200130 contacts →

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

Source: company website · checked Sep 6, 2026
5Indirect evidenceWuppertal, GermanyHQ checked Sep 6, 202651-20079 contacts →

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

Source: company website · checked Sep 6, 2026
6Partial evidenceFrankfurt, GermanyHQ checked Sep 6, 202651-20069 contacts →

“Link11 is a leading European manufacturer of cloud-based cybersecurity solutions that helps businesses and public authorities in critical infrastructure stay online, no matter…”

Source: company website · checked Sep 6, 2026
7Indirect evidenceUlm, GermanyHQ checked Sep 6, 202651-20069 contacts →

“ditis - The Security Company!”

Source: company website · checked Sep 6, 2026
8Partial evidenceJena, GermanyHQ checked Sep 6, 202651-20065 contacts →

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

Source: company website · checked Sep 6, 2026
9Partial evidenceDüsseldorf, GermanyHQ checked Sep 6, 202651-20054 contacts →

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

Source: company website · checked Sep 6, 2026
10Indirect evidenceMendig, GermanyHQ checked Sep 6, 202651-20049 contacts →

“ProSec GmbH verwandelt Unternehmen in digitale Festungen.”

Source: company website · checked Sep 6, 2026
11Partial evidenceRegensburg, GermanyHQ checked Sep 6, 202611-5041 contacts →

“VxLabs is specializes in AI-powered automotive cybersecurity solutions, offering platforms and engineering services to secure connected vehicles throughout their lifecycle.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceAugsburg, GermanyHQ checked Sep 6, 202611-5031 contacts →

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

Source: company website · checked Sep 6, 2026
13Partial evidenceLeipzig, GermanyHQ checked Sep 6, 202611-5027 contacts →

“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 6, 2026
14Indirect evidenceBremen, GermanyHQ checked Sep 6, 202651-20026 contacts →

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

Source: company website · checked Sep 6, 2026
15Indirect evidenceKarlsruhe, GermanyHQ checked Sep 6, 202611-5022 contacts →

“Digitale Bedrohungen wachsen – und damit unsere Verantwortung.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceGelsenkirchen, GermanyHQ checked Sep 6, 202611-5021 contacts →

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

Source: company website · checked Sep 6, 2026
17Indirect evidenceBerlin, GermanyHQ checked Sep 6, 202611-5020 contacts →

“We turn your INdustrial CYber DEfense on, respecting your special operating systems and requirements for efficient and effective security measures, including Railways, Automotive…”

Source: company website · checked Sep 6, 2026
18Indirect evidenceVaterstetten, GermanyHQ checked Sep 6, 202611-5016 contacts →

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

Source: company website · checked Sep 6, 2026
19Indirect evidenceWerl, GermanyHQ checked Sep 6, 202611-5014 contacts →

“ARTADA GmbH is an information technology and services company based out of Hammer Str.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceAugsburg, GermanyHQ checked Sep 6, 202611-5014 contacts →

“IT-Sicherheit, die schützt, bevor es kritisch wird!”

Source: company website · checked Sep 6, 2026
21Indirect evidenceHamburg, GermanyHQ checked Sep 6, 202611-509 contacts →

“Our experienced cyber security experts help you protect your applications and systems and implement progressive cyber security, cloud and penetration test concepts.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceMonheim, GermanyHQ checked Sep 6, 202611-509 contacts →

“Benefit from very extensive cyber security experience as well as Cyber Security Award-winning experts to help you protect your business from cyber attacks.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceKreuztal, GermanyHQ checked Sep 6, 20261-109 contacts →

“EINFACH.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceFrankfurt Am Main, GermanyHQ checked Sep 6, 202611-509 contacts →

“ujima ist ein führender Anbieter von Cyber-Sicherheitslösungen.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceDüsseldorf, GermanyHQ checked Sep 6, 20261-109 contacts →

“Bei securance glauben wir daran, dass Sicherheit nicht entsteht, weil man mehr Tools kauft oder mehr Checklisten ausfüllt, sondern weil man versteht, was im eigenen Unternehmen…”

Source: company website · checked Sep 6, 2026

Showing 25 of 132 utility cybersecurity companies based in Germany

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Utility cybersecurity companies based in Germany at a glance

As of Sep 6, 2026
38.5%Verified-email coverage
1.2%Mobile-number coverage
20.7Average contacts per company
11-50Median size (employees)
13.6%Largest-city concentration · Berlin
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
49
51-200
10
201-500
1
501-1,000
4
1,001-5,000
4

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 utility 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 “utility 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 utility 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 utility 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, 1,054 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 6, 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 utility 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 utility cybersecurity companies are there based in Germany?

RevenueBase identified 132 utility 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 utility cybersecurity companies?

Berlin leads with 18 headquartered companies, followed by Munich (7) and Dusseldorf (5).

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 1,054 verified decision-maker contacts tracked across these 132 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 6, 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.