Company lists · Data refreshed September 2026

Top 25 Critical infrastructure protection companies based in Germany

Name: Critical infrastructure protection companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 233 companies tracked

RevenueBase identified 233 critical infrastructure protection companies headquartered in Germany as of September 2026 and tracks 2,905 professional contacts across them, including 922 with verified work emails. Berlin is the largest hub.

This list covers critical infrastructure protection 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 19, 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 19, 2026 86% judged on-target in blind review

233Companies

2,905Contacts tracked

922Verified emails

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The 25 largest critical infrastructure protection companies based in Germany

Ranked by team size

Top 25 of 233 critical infrastructure protection companies based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to critical infrastructure protection 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Securitas Germany	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	10001+	994 contacts →
	Indirect evidence “Securitas is a global knowledge leader in security.” Source: RevenueBase Database · checked Sep 19, 2026
2	SRC Security Research And Consulting Gmbh	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “SRC Security Research & Consulting is committed to providing service in the areas of information technology and information security.” Source: RevenueBase Database · checked Sep 19, 2026
3	Mispa Technologies Gmbh	Indirect evidence	Langenfeld (rheinland), GermanyHQ checked Sep 19, 2026	51-200	63 contacts →
	Indirect evidence “We, mispa Technologies GmbH, a leading IT security and service provider, deliver consulting, design and managed services to help our customers get the most out of their IT…” Source: RevenueBase Database · checked Sep 19, 2026
4	Funkwerk Security Solutions Gmbh	Indirect evidence	Nürnberg, GermanyHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Funkwerk Security Solutions – Intelligente Sicherheit aus einer Hand Wir sind Ihr deutschlandweiter Partner für ganzheitliche Sicherheitslösungen, die Gebäude, Kommunikations- und…” Source: RevenueBase Database · checked Sep 19, 2026
5	B.I.N.S.S. Datennetze UND Gefahrenmeldesysteme Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “Wir von B.I.N.S.S.” Source: RevenueBase Database · checked Sep 19, 2026
6	BDO Cyber Security Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.” Source: RevenueBase Database · checked Sep 19, 2026
7	Ciborius Gruppe	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	1,001-5,000	40 contacts →
	Indirect evidence “CIBORIUS SECURITY – IHR PARTNER FÜR INTEGRIERTE SICHERHEITSLÖSUNGEN Seit 2006 steht die inhabergeführte CIBORIUS Gruppe für maßgeschneiderte Sicherheits- und…” Source: RevenueBase Database · checked Sep 19, 2026
8	Admeritia Gmbh	Indirect evidence	Langenfeld, GermanyHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “As an owner-managed company, admeritia GmbH turned to industrial IT security shortly after its foundation in 2004.” Source: RevenueBase Database · checked Sep 19, 2026
9	Netcom Connected Services Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	33 contacts →
	Indirect evidence “Die Netcom Connected Services GmbH ist ein dynamisches Unternehmen im Bereich Nachrichtentechnik/Kommunikationslösungen, insbesondere für Kunden mit hohen Ansprüchen an die…” Source: RevenueBase Database · checked Sep 19, 2026
10	Ausecus Gmbh	Strong evidence	Augsburg, GermanyHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “ausecus GmbH delivers IT-Security Consulting and Managed Services for critical infrastructure organisations (KRITIS).” Source: RevenueBase Database · checked Sep 19, 2026
11	MGM Security Partners Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Simplifying Your Security Journey Welcome to mgm security partners GmbH – your reliable partner for simple and effective IT security solutions.” Source: RevenueBase Database · checked Sep 19, 2026
12	VZM VON ZUR Mühlen Sche Gmbh	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “VZM ist ein unabhängiges Beratungs- und Ingenieurunternehmen für Sicherheitskonzepte, Resilienz und technische Infrastrukturen.” Source: RevenueBase Database · checked Sep 19, 2026
13	Rhebo OT & Iiot Security	Strong evidence	Leipzig, GermanyHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong 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 19, 2026
14	Allgeier Cyris Gmbh	Indirect evidence	Bremen, GermanyHQ checked Sep 19, 2026	51-200	26 contacts →
	Indirect evidence “Mehr Schutz vor Angriffen aus dem Cyberraum: Cyberkriminalität ist eine der größten Bedrohungen unserer Zeit.” Source: RevenueBase Database · checked Sep 19, 2026
15	Cyqueo	Indirect evidence	München, GermanyHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “CYQUEO secures digital communication and business processes.” Source: RevenueBase Database · checked Sep 19, 2026
16	Unival Group Gmbh	Partial evidence	Bonn, GermanyHQ checked Sep 19, 2026	11-50	25 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 19, 2026
17	Enbw Cyber Security Gmbh	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Source: RevenueBase Database · checked Sep 19, 2026
18	Secori	Indirect evidence	Frankfurt, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “secori advisors is a management consultancy with a focus on security, risk, and compliance.” Source: RevenueBase Database · checked Sep 19, 2026
19	Atarax Unternehmensgruppe	Indirect evidence	Herzogenaurach, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Die atarax Unternehmensgruppe ist ein flexibles Team mit dem Schwerpunkt strategische Unternehmenssicherheit.” Source: RevenueBase Database · checked Sep 19, 2026
20	Netkom Gmbh	Indirect evidence	Papenburg, GermanyHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Moin, wir sind die Firma NetKom GmbH aus Papenburg.” Source: RevenueBase Database · checked Sep 19, 2026
21	Rt-Solutions.De Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 19, 2026	51-200	18 contacts →
	Indirect evidence “Durch unsere Beratung helfen wir unseren Kunden die Sicherheit und Effizienz ihrer IT nachhaltig zu steigern und ihre IT-Risiken zu kontrollieren.” Source: RevenueBase Database · checked Sep 19, 2026
22	DS Data Systems Gmbh	Partial evidence	Braunschweiger, GermanyHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Full-Hand Security – Integrating Governance, Cyber & Physical Protection Wir schützen Unternehmen, Organisationen und Behörden umfassend vor Cyberangriffen, Datenverlusten…” Source: RevenueBase Database · checked Sep 19, 2026
23	BXC Security	Indirect evidence	Hallbergmoos, GermanyHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “BxC Security focuses on delivering end-to-end cyber security consulting across IT and Production environments.” Source: RevenueBase Database · checked Sep 19, 2026
24	Protea Networks Gmbh	Partial evidence	Unterhaching, GermanyHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Protection with Passion Seit über 20 Jahren entwickeln und implementieren wir Sicherheitsstrategien, die den Unternehmenserfolg unserer Kunden in den Mittelpunkt stellen.” Source: RevenueBase Database · checked Sep 19, 2026
25	Maconia Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “UNSERE VISION Komplexe Risiken, exzellente Beratung, klare Lösungen: MACONIA schützt Unternehmen und Institutionen!” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: critical infrastructure protection companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names critical infrastructure protection companies.
Partial evidence: Its own public description names part of critical infrastructure protection companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name critical infrastructure protection companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 233 critical infrastructure protection companies based in Germany

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Critical infrastructure protection companies based in Germany at a glance

As of Sep 19, 2026

31.7%Verified-email coverage

12.5Average contacts per company

1-10Median size (employees)

12.0%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

116

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 233 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 critical infrastructure protection 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 “critical infrastructure protection 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 critical infrastructure protection 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 critical infrastructure protection 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, 922 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 19, 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.

Critical infrastructure protection companies by metro

Critical infrastructure protection companies in Berlin28

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 critical infrastructure protection 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 critical infrastructure protection companies are there based in Germany?

RevenueBase identified 233 critical infrastructure protection 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?

Securitas Germany, headquartered in Berlin, tops this list with the largest team on record.

Which city has the most critical infrastructure protection companies?

Berlin leads with 28 headquartered companies, followed by Munchen (10) and Koln (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 922 verified decision-maker contacts tracked across these 233 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 19, 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.