Company lists · Data refreshed September 2026

Top 25 Infrastructure hardening contractors based in Germany

Name: Infrastructure hardening contractors based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 118 companies tracked

RevenueBase identified 118 infrastructure hardening contractors headquartered in Germany as of September 2026 and tracks 884 professional contacts across them, including 328 with verified work emails. Berlin is the largest hub.

This list covers infrastructure hardening contractors 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 17, 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 17, 2026 86% judged on-target in blind review

118Companies

884Contacts tracked

328Verified emails

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The 25 largest infrastructure hardening contractors based in Germany

Ranked by team size

Top 25 of 118 infrastructure hardening contractors based in Germany, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure hardening contractors: 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	SRC Security Research And Consulting Gmbh	Indirect evidence	Bonn, GermanyHQ checked Sep 17, 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 17, 2026
2	BDO Cyber Security Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 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 17, 2026
3	Admeritia Gmbh	Indirect evidence	Langenfeld, GermanyHQ checked Sep 17, 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 17, 2026
4	Ausecus Gmbh	Partial evidence	Augsburg, GermanyHQ checked Sep 17, 2026	11-50	31 contacts →
	Partial evidence “ausecus GmbH delivers IT-Security Consulting and Managed Services for critical infrastructure organisations (KRITIS).” Source: RevenueBase Database · checked Sep 17, 2026
5	MGM Security Partners Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 17, 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 17, 2026
6	VZM VON ZUR Mühlen Sche Gmbh	Indirect evidence	Bonn, GermanyHQ checked Sep 17, 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 17, 2026
7	Enbw Cyber Security Gmbh	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Source: RevenueBase Database · checked Sep 17, 2026
8	Atarax Unternehmensgruppe	Indirect evidence	Herzogenaurach, GermanyHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Die atarax Unternehmensgruppe ist ein flexibles Team mit dem Schwerpunkt strategische Unternehmenssicherheit.” Source: RevenueBase Database · checked Sep 17, 2026
9	DS Data Systems Gmbh	Indirect evidence	Braunschweiger, GermanyHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Full-Hand Security – Integrating Governance, Cyber & Physical Protection Wir schützen Unternehmen, Organisationen und Behörden umfassend vor Cyberangriffen, Datenverlusten…” Source: RevenueBase Database · checked Sep 17, 2026
10	Protea Networks Gmbh	Indirect evidence	Unterhaching, GermanyHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect 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 17, 2026
11	Protectone	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “protectONE - akkreditiertes und autorisiertes Consulting- & Trainingsunternehmen für IT Security Lösungen.” Source: RevenueBase Database · checked Sep 17, 2026
12	Maconia Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 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 17, 2026
13	Teal Technology Consulting Gmbh	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “Über den "Anmelden"-Button gelangst du zu unserem neusten Webinar.” Source: RevenueBase Database · checked Sep 17, 2026
14	Agt-Advanced German Technology	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “AGT helps organizations create secure environments for safer operations and better service.” Source: RevenueBase Database · checked Sep 17, 2026
15	Carmao Gmbh	Indirect evidence	Limburg, GermanyHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “As an IT security consulting firm for exigent requirements, we conceive solutions guaranteeing our customers a permanent high added value in their Information Security and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Security Assist Gmbh	Indirect evidence	Dortmund, GermanyHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Security Assist – Die Sicherheitsarchitekten® Security Assist ist ein Spezialist mit langjähriger Erfahrung und Wissen in der Sicherheitsberatung in unterschiedlichsten Branchen…” Source: RevenueBase Database · checked Sep 17, 2026
17	Concepture Gmbh	Indirect evidence	GermanyHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Concepture ist ein unabhängiges Beratungsunternehmen für ganzheitliche Sicherheit.” Source: RevenueBase Database · checked Sep 17, 2026
18	Industrie-Bewachung Bruno Wachtmeister Gmbh & Co. KG	Indirect evidence	Stuttgart, GermanyHQ checked Sep 17, 2026	201-500	13 contacts →
	Indirect evidence “Industrie-Bewachung Bruno Wachtmeister GmbH & Co.” Source: RevenueBase Database · checked Sep 17, 2026
19	Bitaggregat Gmbh	Indirect evidence	Leipzig, GermanyHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Wir bei Bitaggregat sind Experten im Bereich Security Engineering & Testing und spezialisieren uns auf den Schutz kritischer Infrastrukturen und Ressourcen.” Source: RevenueBase Database · checked Sep 17, 2026
20	Sequire Technology	Indirect evidence	Saarbrücken, GermanyHQ checked Sep 17, 2026	1-10	11 contacts →
	Indirect evidence “Sicherheit können wir Wir sind sequire (für: security (engl: Sicherheit) und quire (lateinisch: können))!” Source: RevenueBase Database · checked Sep 17, 2026
21	Umbrella Unternehmensberatung Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Digitale Sicherheit – Wir gestalten sichere Netze für Deutschland Als hochspezialisiertes Beratungsunternehmen begleiten wir Auftraggeber aus der öffentlichen Verwaltung und der…” Source: RevenueBase Database · checked Sep 17, 2026
22	Anmatho AG	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Die ANMATHO AG ist Ihr Spezialist für Beratungsleistungen in den Bereichen Informationssicherheit, Datenschutz und Technische Sicherheit.” Source: RevenueBase Database · checked Sep 17, 2026
23	Vimopro Gmbh	Indirect evidence	Villingen-schwenningen, GermanyHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Ein Unternehmen, ein Ziel – Unsere Kunden in eine sichere IT-Zukunft zu begleiten.” Source: RevenueBase Database · checked Sep 17, 2026
24	PSA Sicherheitsmanagement Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 2026	201-500	11 contacts →
	Indirect evidence “PSA Sicherheitsmanagement GmbH steht seit 1991 für Sicherheitslösungen, die Verantwortung und Qualität vereinen.” Source: RevenueBase Database · checked Sep 17, 2026
25	Protforce Gmbh	Indirect evidence	Wiesbaden, GermanyHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Bei Protforce stehen Sicherheit und Zukunft im Einklang.” Source: RevenueBase Database · checked Sep 17, 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: infrastructure hardening contractors. 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 infrastructure hardening contractors.
Partial evidence: Its own public description names part of infrastructure hardening contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure hardening contractors. 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 118 infrastructure hardening contractors based in Germany

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Infrastructure hardening contractors based in Germany at a glance

As of Sep 17, 2026

37.1%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · Berlin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 118 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 infrastructure hardening contractors, 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 “infrastructure hardening contractors”. 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 infrastructure hardening contractors), 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 infrastructure hardening contractors, 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, 328 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 17, 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 infrastructure hardening contractors, 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 infrastructure hardening contractors are there based in Germany?

RevenueBase identified 118 infrastructure hardening contractors 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?

SRC Security Research And Consulting Gmbh, headquartered in Bonn, tops this list with the largest team on record.

Which city has the most infrastructure hardening contractors?

Berlin leads with 14 headquartered companies, followed by Frankfurt (7) and Munich (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 328 verified decision-maker contacts tracked across these 118 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 17, 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.