Company lists · Data refreshed September 2026
Top 14 Network security testing firms based in Berlin, Germany
RevenueBase identified 31 network security testing firms headquartered in Berlin, Germany as of September 2026 and tracks 119 professional contacts across them, including 47 with verified work emails. Across Germany, Berlin is the largest hub for this category.
This list covers network security testing firms headquartered in Berlin, 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 29, 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.
The 14 largest network security testing firms based in Berlin, Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 17 contacts → | ||||
Partial evidence “Die GAI NetConsult GmbH ist ein in Deutschland und dem benachbarten Ausland tätiges, unabhängiges Beratungsunternehmen für IT- und OT-Security mit Hauptsitz in Berlin.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 7 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5 contacts → | ||||
Partial evidence “Applied Computer Security Research & Audits Recurity Labs considers design making & breaking as our core competence, closely followed by high end security analysis services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4 contacts → | ||||
Partial evidence “We're a team of highly skilled IT security professionals dedicated to tackling the most diverse and complex problems in the industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3 contacts → | ||||
Partial evidence “CISOCON is an elite cyber security consultancy advancing the state-of-the-art in cyber security and protecting businesses from the inside.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 contacts → | ||||
Partial evidence “We help security teams, SOCs, CISO to detect cyber attacks in early stages and monitor their business from hacker perspectives.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2 contacts → | ||||
Indirect evidence “Automated cybersecurity attacks are continuously increasing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 contacts → | ||||
Indirect evidence “Secure Sphere Labs: Your Shield in the Digital World Company Overview: At Secure Sphere Labs, we are dedicated to fortifying your digital presence with cutting-edge cybersecurity…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2 contacts → | ||||
Partial evidence “Advanced Cyber Security software solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1 contacts → | ||||
Indirect evidence “BLISSE Systemhaus GmbH is an information technology and services company based out of Habelschwerdter Allee 9, 14195 Berlin, Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1 contacts → | ||||
Partial evidence “DSecured is a Berlin based IT security company with a backgrround in offensive security and bug bounty hunting.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1 contacts → | ||||
Strong evidence “Dien8 Network and Security Offensive security services A company specialized in penetration testing, software & network security audits” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: network security testing firms. 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 network security testing firms.
- Partial evidence
- Its own public description names part of network security testing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name network security testing firms. 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 14 of 31 network security testing firms based in Berlin, Germany
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Network security testing firms based in Berlin, Germany at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole Germany list rather than for Berlin, so it is reported there. Company counts and contact totals on this page are exact for Berlin, over 31 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 network security testing firms, 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 Berlin, Germany whose own description of what they do matches “network security testing firms”. 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 network security testing firms), 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 network security testing firms, and records with no verified work email. Companies headquartered outside Berlin 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, 47 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 29, 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 network security testing firms, 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 network security testing firms are there based in Berlin, Germany?
RevenueBase identified 31 network security testing firms headquartered in Berlin, 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?
Cure53, headquartered in Berlin, tops this list with the largest team on record.
Which city in Germany has the most network security testing firms?
Berlin leads Germany with 31 headquartered companies, followed by Munich (12) and Hamburg (9).
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 47 verified decision-maker contacts tracked across these 31 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 29, 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.
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