Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 757 companies tracked

RevenueBase identified 757 cybersecurity contractors headquartered in Germany as of September 2026 and tracks 8,713 professional contacts across them, including 3,095 with verified work emails. Berlin is the largest hub.

This list covers cybersecurity 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 21, 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 21, 2026 86% judged on-target in blind review

757Companies

8,713Contacts tracked

3,095Verified emails

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The 25 largest cybersecurity contractors based in Germany

Ranked by team size

Top 25 of 757 cybersecurity contractors based in Germany, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	Secunet Security Networks AG	Indirect evidence	Essen, GermanyHQ checked Sep 21, 2026	1,001-5,000	623 contacts →
	Indirect evidence “secunet – We are the Guardians of Europe's Digital Freedom.” Source: RevenueBase Database · checked Sep 21, 2026
2	Utimaco	Partial evidence	Aachen, GermanyHQ checked Sep 21, 2026	501-1,000	507 contacts →
	Partial evidence “UTIMACO is a global platform provider of trusted Cybersecurity and Compliance solutions and services with headquarters in Aachen (Germany) and Campbell, CA (USA).” Source: RevenueBase Database · checked Sep 21, 2026
3	G Data Cyberdefense	Indirect evidence	Bochum, GermanyHQ checked Sep 21, 2026	501-1,000	386 contacts →
	Indirect 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 21, 2026
4	T Security - Dach	Indirect evidence	Bonn, GermanyHQ checked Sep 21, 2026	1,001-5,000	363 contacts →
	Indirect evidence “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Source: RevenueBase Database · checked Sep 21, 2026
5	Infinigate Deutschland	Partial evidence	Haar, GermanyHQ checked Sep 21, 2026	201-500	242 contacts →
	Partial evidence “Die Infinigate Group konzentriert sich als Value-add Distributor auf führende und nachhaltige Cybersecurity-Lösungen.” Source: RevenueBase Database · checked Sep 21, 2026
6	CS Visor	Indirect evidence	Bayern, GermanyHQ checked Sep 21, 2026	11-50	132 contacts →
	Indirect evidence “CS VISOR is a leading cyber security education/training center and professional recruitment & IT security service provider, dedicated to- help people in changing their careers to…” Source: RevenueBase Database · checked Sep 21, 2026
7	USD AG	Indirect evidence	Neu-isenburg, GermanyHQ checked Sep 21, 2026	51-200	130 contacts →
	Indirect evidence “Die usd AG schützt Unternehmen vor Hackern und Kriminellen.” Source: RevenueBase Database · checked Sep 21, 2026
8	TÜV Informationstechnik Gmbh	Indirect evidence	Essen, GermanyHQ checked Sep 21, 2026	51-200	111 contacts →
	Indirect evidence “TÜV Informationstechnik GmbH (headquartered in Essen, Germany) is a renowned IT security service provider and an independent testing institute and laboratory for IT security and…” Source: RevenueBase Database · checked Sep 21, 2026
9	PAN Dacom Networking AG	Indirect evidence	Dreieich, GermanyHQ checked Sep 21, 2026	201-500	90 contacts →
	Indirect evidence “Wenn das Internet eine Stadt wäre, bauen wir die Straßen.“ So beschreibt COO, Thomas Klein, das, was die Pan Dacom Networking AG (aus)macht.” Source: RevenueBase Database · checked Sep 21, 2026
10	Exclusive Networks Deutschland Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 21, 2026	51-200	81 contacts →
	Partial evidence “Exclusive Networks ist ein globaler Cybersecurity- und Netzwerk-Spezialist, der Partnern und Endkunden über bewährte Vertriebswege und auf der Grundlage des technischen Know-hows…” Source: RevenueBase Database · checked Sep 21, 2026
11	R-Tec IT Security Gmbh	Indirect evidence	Wuppertal, GermanyHQ checked Sep 21, 2026	51-200	79 contacts →
	Indirect evidence “r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.” Source: RevenueBase Database · checked Sep 21, 2026
12	8com Gmbh & Co. KG	Indirect evidence	Neustadt An Der Weinstrasse, GermanyHQ checked Sep 21, 2026	51-200	77 contacts →
	Indirect evidence “8COM is a leading Managed Security Service Provider (MSSP).” Source: RevenueBase Database · checked Sep 21, 2026
13	Secuinfra Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 21, 2026	51-200	73 contacts →
	Indirect evidence “SECUINFRA, expert and partner for cyber defense, has specialized in the detection, analysis and defense against cyber attacks since 2010.” Source: RevenueBase Database · checked Sep 21, 2026
14	Link11 Gmbh	Partial evidence	Frankfurt, GermanyHQ checked Sep 21, 2026	51-200	69 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
15	Ditis Systeme	Indirect evidence	Ulm, GermanyHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “ditis - The Security Company!” Source: RevenueBase Database · checked Sep 21, 2026
16	Syss Gmbh	Indirect evidence	Tübingen, GermanyHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “Die SySS GmbH ist ein herstellerunabhängiger IT-Sicherheitsdienstleister und führender Anbieter für Penetrationstests in der DACH-Region.” Source: RevenueBase Database · checked Sep 21, 2026
17	Techbros	Partial evidence	Düsseldorf, GermanyHQ checked Sep 21, 2026	501-1,000	67 contacts →
	Partial evidence “We deliver advanced IT, Cybersecurity, AI, and Telecommunications solutions for enterprises, operators, and governments worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
18	Enginsight Gmbh	Partial evidence	Jena, GermanyHQ checked Sep 21, 2026	51-200	65 contacts →
	Partial evidence “Enginsight ist die praxisnahe und effiziente Cybersecurity Plattform aus Deutschland, für mittelständische Unternehmen, KRITIS und öffentliche Träger.” Source: RevenueBase Database · checked Sep 21, 2026
19	Indevis Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 21, 2026	51-200	65 contacts →
	Indirect evidence “indevis GmbH tritt seit März 2026 unter der neuen Marke Argos Security GmbH auf.” Source: RevenueBase Database · checked Sep 21, 2026
20	Mispa Technologies Gmbh	Indirect evidence	Langenfeld (rheinland), GermanyHQ checked Sep 21, 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 21, 2026
21	Water IT Security & Defense	Partial evidence	Düsseldorf, GermanyHQ checked Sep 21, 2026	51-200	54 contacts →
	Partial evidence “water is a cybersecurity company that provides holistic IT security solutions to keep your business safe.” Source: RevenueBase Database · checked Sep 21, 2026
22	Concentrade	Partial evidence	Dortmund, GermanyHQ checked Sep 21, 2026	51-200	52 contacts →
	Partial evidence “Just stronger Cybersecurity - Bestmöglichen Schutz vor Cyberangriffen aufzubauen und auf hohem Niveau zu halten, ist Kernkompetenz der concentrade.” Source: RevenueBase Database · checked Sep 21, 2026
23	Medialine Security	Indirect evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	51-200	51 contacts →
	Indirect evidence “Medialine Security – 360° Cyber Security Expertise Innerhalb der Medialine Group sind wir das Competence Center für Cybersicherheit.” Source: RevenueBase Database · checked Sep 21, 2026
24	Prosec Gmbh	Indirect evidence	Mendig, GermanyHQ checked Sep 21, 2026	51-200	49 contacts →
	Indirect evidence “ProSec GmbH verwandelt Unternehmen in digitale Festungen.” Source: RevenueBase Database · checked Sep 21, 2026
25	Quointelligence	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 21, 2026	11-50	48 contacts →
	Indirect evidence “I’m not your usual analyst.” Source: RevenueBase Database · checked Sep 21, 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: cybersecurity 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 cybersecurity contractors.
Partial evidence: Its own public description names part of cybersecurity contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 757 cybersecurity contractors based in Germany

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Cybersecurity contractors based in Germany at a glance

As of Sep 21, 2026

35.5%Verified-email coverage

11.5Average contacts per company

1-10Median size (employees)

10.0%Largest-city concentration · Berlin

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

424

11-50

231

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 757 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 cybersecurity 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 “cybersecurity 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 cybersecurity 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 cybersecurity 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, 3,095 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 21, 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.

Cybersecurity contractors by metro

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 cybersecurity 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 cybersecurity contractors are there based in Germany?

RevenueBase identified 757 cybersecurity 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?

Secunet Security Networks AG, headquartered in Essen, tops this list with the largest team on record.

Which city has the most cybersecurity contractors?

Berlin leads with 76 headquartered companies, followed by Munich (38) and Hamburg (29).

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 3,095 verified decision-maker contacts tracked across these 757 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 21, 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.