Company lists · Data refreshed September 2026

Top 25 Vulnerability assessment companies based in Germany

Name: Vulnerability assessment companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 80 companies tracked

RevenueBase identified 80 vulnerability assessment companies headquartered in Germany as of September 2026 and tracks 534 professional contacts across them, including 194 with verified work emails. Berlin is the largest hub.

This list covers vulnerability assessment 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 22, 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 22, 2026 86% judged on-target in blind review

80Companies

534Contacts tracked

194Verified emails

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The 25 largest vulnerability assessment companies based in Germany

Ranked by team size

Top 25 of 80 vulnerability assessment companies based in Germany, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to vulnerability assessment 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	Greenbone AG	Partial evidence	Osnabrueck, GermanyHQ checked Sep 22, 2026	51-200	109 contacts →
	Partial evidence “With over installations worldwide, Greenbone is the most widely used provider of open source vulnerability management.” Source: RevenueBase Database · checked Sep 22, 2026
2	Syss Gmbh	Indirect evidence	Tübingen, GermanyHQ checked Sep 22, 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 22, 2026
3	Nextron Systems	Partial evidence	Frankfurt, GermanyHQ checked Sep 22, 2026	51-200	46 contacts →
	Partial evidence “Nextron Systems delivers automated compromise assessments to reliably uncover hidden intrusions.” Source: RevenueBase Database · checked Sep 22, 2026
4	Squalify	Partial evidence	81671 München, GermanyHQ checked Sep 22, 2026	11-50	25 contacts →
	Partial evidence “Squalify provides full spectrum clarity for strategic decision makers who seek to eliminate cyber risk surprises – with superior data, innovative risk assessment tools, and proven…” Source: RevenueBase Database · checked Sep 22, 2026
5	Enbw Cyber Security Gmbh	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 22, 2026	11-50	22 contacts →
	Indirect evidence “Digitale Bedrohungen wachsen – und damit unsere Verantwortung.” Source: RevenueBase Database · checked Sep 22, 2026
6	Sedevo IT Consulting Gmbh	Indirect evidence	Stuttgart, GermanyHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “Unser Ziel ist es, für Sie Produkte und Lösungen zu entwickeln, welche gleichzeitig widerstandsfähig gegen Angriffe und Manipulationen sind, um Daten und Prozesse zu schützen.” Source: RevenueBase Database · checked Sep 22, 2026
7	Cure53	Indirect evidence	Berlin, GermanyHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “Cure53 offers classic black-box penetration tests (zero-knowledge) as well as white-box tests and code audits.” Source: RevenueBase Database · checked Sep 22, 2026
8	Binary Gecko	Indirect evidence	Berlin, GermanyHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Binary Gecko GmbH is a provider of comprehensive and specialized cybersecurity solutions to businesses and institutions of all sizes.” Source: RevenueBase Database · checked Sep 22, 2026
9	AIS Advanced It-Security Solutions Gmbh	Indirect evidence	St. Ingbert, GermanyHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “Founded in late 2020 as a spin-off of the CISPA Helmholtz Center for Information Security, we strive to transfer research excellence to real-world products that support businesses…” Source: RevenueBase Database · checked Sep 22, 2026
10	Defenderbox	Indirect evidence	Kreuztal, GermanyHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “EINFACH.” Source: RevenueBase Database · checked Sep 22, 2026
11	EPP Gmbh	Partial evidence	Nuremberg, GermanyHQ checked Sep 22, 2026	11-50	8 contacts →
	Partial evidence “As a specialist for undercover, investigative enquieries as well as visibility and vulnerability analyses (OSINT), we feel obliged to our clients.” Source: RevenueBase Database · checked Sep 22, 2026
12	Cystrat Services Gmbh	Indirect evidence	Maintal, GermanyHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “CyStrat Services GmbH was founded in 2022 with the clear vision of delivering first-class consulting services in the field of cybersecurity, built on a strong foundation of IT…” Source: RevenueBase Database · checked Sep 22, 2026
13	Bugshell	Indirect evidence	Berlin, GermanyHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence “Bugshell is a European penetration testing platform that enables organizations to manage security testing in a transparent, trackable, and scalable way.” Source: RevenueBase Database · checked Sep 22, 2026
14	Cysmo Cyber Risk Rating	Indirect evidence	Hamburg, GermanyHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “cysmo® transforms cyber risk management in the financial industry, specifically designed for insurance companies and with a sophisticated outside-in scanning method, cysmo®…” Source: RevenueBase Database · checked Sep 22, 2026
15	Mitigant	Indirect evidence	Potsdam, GermanyHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “Most cloud security tools tell you what's misconfigured.” Source: RevenueBase Database · checked Sep 22, 2026
16	Breachlabz	Indirect evidence	Munich, GermanyHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence “We are your automotive penetration testing experts.” Source: RevenueBase Database · checked Sep 22, 2026
17	Backup Eagle	Partial evidence	Pulheim, GermanyHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “BACKUP EAGLE® uncovers hidden vulnerabilities in existing backup environments and reliably protects companies against data loss.” Source: RevenueBase Database · checked Sep 22, 2026
18	Specops Solutions Gmbh	Indirect evidence	Königstein, GermanyHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Die SpecOps Solutions GmbH ist ein Nischenanbieter für Informationssicherheit.” Source: RevenueBase Database · checked Sep 22, 2026
19	Redlings Gmbh	Indirect evidence	Mannheim, GermanyHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Wir sind spezialisiert auf die Durchführung von Penetrationstests und SOC/SIEM Managed Services.” Source: RevenueBase Database · checked Sep 22, 2026
20	Deutor Cyber Security Solutions Gmbh	Indirect evidence	Cologne, GermanyHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Wir unterstützen Unternehmen und Behörden bei der Identifizierung ihrer kritischen Geschäftsstrukturen, Prozesse und Systeme, ihren Schwachstellen bei Cyber-Attacken und…” Source: RevenueBase Database · checked Sep 22, 2026
21	Lednerb It-Security Gmbh	Indirect evidence	Flensburg, GermanyHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Es ist unser Anliegen die Infrastruktur unserer Kunden bestmöglich und effizient vor Cyber-Bedrohungen aller Art zu schützen.” Source: RevenueBase Database · checked Sep 22, 2026
22	Pen.Sec AG	Indirect evidence	Hemau, GermanyHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Ihr verlässlicher Partner für IT-Sicherheit in Hemau, Bayern.” Source: RevenueBase Database · checked Sep 22, 2026
23	Avanito Gmbh	Indirect evidence	Ingolstadt, GermanyHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
24	Jester Secure IT Gmbh	Indirect evidence	Bergisch Gladbach, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “The company name “Jester” refers to the tradition of a special kind of consultant during the medieval royal courts: The Court Jester The court jester was the only one in court…” Source: RevenueBase Database · checked Sep 22, 2026
25	ALB Cyber Guards	Indirect evidence	Albstadt, GermanyHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Willkommen bei Alb Cyber Guards, Ihrem vertrauenswürdigen Partner für Penetrationstests!” Source: RevenueBase Database · checked Sep 22, 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: vulnerability assessment 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 vulnerability assessment companies.
Partial evidence: Its own public description names part of vulnerability assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vulnerability assessment 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 80 vulnerability assessment companies based in Germany

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Vulnerability assessment companies based in Germany at a glance

As of Sep 22, 2026

36.3%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

13.8%Largest-city concentration · Berlin

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 80 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 vulnerability assessment 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 “vulnerability assessment 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 vulnerability assessment 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 vulnerability assessment 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, 194 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 22, 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 vulnerability assessment 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 vulnerability assessment companies are there based in Germany?

RevenueBase identified 80 vulnerability assessment 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?

Greenbone AG, headquartered in Osnabrueck, tops this list with the largest team on record.

Which city has the most vulnerability assessment companies?

Berlin leads with 11 headquartered companies, followed by Hamburg (5) and Munich (4).

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 194 verified decision-maker contacts tracked across these 80 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 22, 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.