Company lists · Data refreshed September 2026
Top 25 Telecom network security software companies based in Germany
RevenueBase identified 51 telecom network security software companies headquartered in Germany as of September 2026 and tracks 2,267 professional contacts across them, including 533 with verified work emails. Berlin is the largest hub.
This list covers telecom network security software 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 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 25 largest telecom network security software companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 623 contacts → | ||||
Indirect evidence “secunet – We are the Guardians of Europe's Digital Freedom.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 113 contacts → | ||||
Indirect evidence “Securepoint GmbH, from the Hanseatic city of Lüneburg, is the market leader in the development of professional “Unified Threat Management” solutions in Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 96 contacts → | ||||
Partial evidence “Rohde & Schwarz Cybersecurity is a leading IT security company that protects companies and public institutions around the world against cyberattacks.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 69 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 64 contacts → | ||||
Indirect evidence “ESET ist ein europäischer IT-Sicherheitshersteller mit Hauptsitz in Bratislava (Slowakei).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 54 contacts → | ||||
Strong evidence “Adva Network Security is a leading German IT-security company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 39 contacts → | ||||
Partial evidence “As IT security company we protect your electronical stored data against cyber attacks.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 39 contacts → | ||||
Strong evidence “NCP mit Hauptsitz in Nürnberg ist ein weltweit führender Softwarehersteller für hochsichere Lösungen in den Bereichen Remote Access, Endpoint Security sowie Cloud & VPN.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 37 contacts → | ||||
Partial evidence “macmon, one of Belden’s connected brands, makes complete network transparency and control possible by monitoring and protecting against unauthorized access.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 34 contacts → | ||||
Strong evidence “ECOS is an owner-managed business and specialized in the software development of IT security solutions.we connect IT stands for solutions providing employees of public…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 21 contacts → | ||||
Partial evidence “We are a cyber security company based in Gelsenkirchen, Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 contacts → | ||||
Indirect evidence “AGT helps organizations create secure environments for safer operations and better service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 contacts → | ||||
Indirect evidence “Welcome to digitronic computersysteme GmbH!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Strong evidence “ISL Internet Sicherheitslösungen GmbH, based in Bochum, has been developing innovative and future-proof IT security solutions since it was founded in As a leading German software…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 12 contacts → | ||||
Partial evidence “BMU Beratungsgesellschaft Mittelständischer Unternehmen mbH is a computer software company based out of Scharnhorstplatz 6, Northeim, Lower Saxony, Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Strong evidence “Mobile networks are very complex, and assuring their security can be challenging.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “We are an international company with Headquarters in Europe and North America.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Strong evidence “Solcon Systemtechnik GmbH is a computer & network security company based out of Niels-Bohr-Ring 3-5, Lübeck, Schleswig-Holstein, Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Partial evidence “SERASEC ist ein IT-Security-Unternehmen mit Sitz in Villingen-Schwenningen.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Unternehmen und Menschen zuverlässig schützen: Genau darauf haben wir uns bei FELIX spezialisiert.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Mit der Gründung 2003 wurde der Grundstein für ein breites Angebot an wirkungsvollen und kosteneffektiven Sicherheitslösungen rund um E-Mail, Internet, Daten und Netzwerk gelegt.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Ihre Sicherheit ist unser Auftrag.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Über das Internet verbreiten sich digitale Bedrohungen durch Schadsoftware oder Malware rasend schnell.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “Horus-Net a Unit of Ostertag DeTeWe GmbH is a company based out of Konrad-Zuse-Ring 29, Remagen, Germany.” 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: telecom network security software 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 telecom network security software companies.
- Partial evidence
- Its own public description names part of telecom network security software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name telecom network security software 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 51 telecom network security software companies based in Germany
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Telecom network security software companies based in Germany at a glance
As of Sep 29, 2026Companies by employee count
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 51 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 telecom network security software 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 “telecom network security software 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 telecom network security software 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 telecom network security software 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, 533 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 telecom network security software 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 telecom network security software companies are there based in Germany?
RevenueBase identified 51 telecom network security software 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?
Secunet Security Networks AG, headquartered in Essen, tops this list with the largest team on record.
Which city has the most telecom network security software companies?
Berlin leads with 6 headquartered companies, followed by Munich (5) and Bochum (3).
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 533 verified decision-maker contacts tracked across these 51 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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