Company lists · Data refreshed November 2026

Top 22 Iot security companies based in Germany

The 233 IoT security companies based in Germany listed here include contact details for 5,015 professionals and 1,845 email addresses. Munich is the single most-represented city among the companies on this list. This directory was updated in November 2026.

IoT security companies provide products and services that protect connected devices, networks, data, and applications from unauthorized access, disruption, and misuse. This list covers companies that provide security products or services for Internet of Things devices, networks, data, or applications. Ranked by team size, largest first. Data current as of November 4, 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 Nov 4, 2026 86% judged on-target in blind review
233Companies
5,015Contacts tracked
1,845Verified emails
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The 22 largest iot security companies based in Germany

Ranked by team size
Top 22 of 233 iot security companies based in Germany, ranked by team size, largest first. Data refreshed Nov 4, 2026. RevenueBase Smart Search rates how each company's information relates to iot security 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceEssen, GermanyHQ checked Nov 4, 20261,001-5,000680 contacts →

Indirect evidence

“secunet – We are the Guardians of Europe's Digital Freedom.”

Source: RevenueBase Database · checked Nov 4, 2026
2Indirect evidenceBochum, GermanyHQ checked Nov 4, 2026501-1,000392 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 Nov 4, 2026
3Indirect evidenceBonn, GermanyHQ checked Nov 4, 20261,001-5,000379 contacts →

Indirect evidence

“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.”

Source: RevenueBase Database · checked Nov 4, 2026
4Indirect evidenceNeu-isenburg, GermanyHQ checked Nov 4, 202651-200134 contacts →

Indirect evidence

“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.”

Source: RevenueBase Database · checked Nov 4, 2026
5Partial evidenceMunich, GermanyHQ checked Nov 4, 20261,001-5,00097 contacts →

Partial evidence

“Thales' Cinterion IoT products & services business is now part of Telit Cinterion, creating the leading Western provider of trusted IoT solutions.”

Source: RevenueBase Database · checked Nov 4, 2026
6Partial evidenceMunich, GermanyHQ checked Nov 4, 2026201-50094 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 Nov 4, 2026
7Indirect evidenceBerlin, GermanyHQ checked Nov 4, 202651-20093 contacts →

Indirect 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 Nov 4, 2026
8Partial evidenceWuppertal, GermanyHQ checked Nov 4, 202651-20084 contacts →

Partial evidence

“r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.”

Source: RevenueBase Database · checked Nov 4, 2026
9Indirect evidenceFrankfurt, GermanyHQ checked Nov 4, 202651-20080 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 Nov 4, 2026
10Indirect evidenceUlm, GermanyHQ checked Nov 4, 202651-20071 contacts →

Indirect evidence

Source: RevenueBase Database · checked Nov 4, 2026
11Partial evidenceStuttgart, GermanyHQ checked Nov 4, 202651-20057 contacts →

Partial evidence

“Medialine Security – 360° Cyber Security Expertise Innerhalb der Medialine Group sind wir das Competence Center für Cybersicherheit.”

Source: RevenueBase Database · checked Nov 4, 2026
12Indirect evidenceMendig, GermanyHQ checked Nov 4, 202651-20056 contacts →

Indirect evidence

“ProSec GmbH verwandelt Unternehmen in digitale Festungen.”

Source: RevenueBase Database · checked Nov 4, 2026
13Indirect evidenceDortmund, GermanyHQ checked Nov 4, 202651-20055 contacts →

Indirect evidence

“Just stronger Cybersecurity - Bestmöglichen Schutz vor Cyberangriffen aufzubauen und auf hohem Niveau zu halten, ist Kernkompetenz der concentrade.”

Source: RevenueBase Database · checked Nov 4, 2026
14Indirect evidenceHanover, GermanyHQ checked Nov 4, 202651-20044 contacts →

Indirect evidence

“SECONTEC, Teil der Clearway Group, definiert Sicherheit neu.”

Source: RevenueBase Database · checked Nov 4, 2026
15Partial evidenceMeppen, GermanyHQ checked Nov 4, 202651-20043 contacts →

Partial evidence

“As IT security company we protect your electronical stored data against cyber attacks.”

Source: RevenueBase Database · checked Nov 4, 2026
16Partial evidenceIdar-oberstein, GermanyHQ checked Nov 4, 202651-20029 contacts →

Partial evidence

“Security technology goes SIMPLE and DIGITAL Every company has a need for physical security.”

Source: RevenueBase Database · checked Nov 4, 2026
17Indirect evidenceLöhne, GermanyHQ checked Nov 4, 202651-20028 contacts →

Indirect evidence

“digit solutions GmbH is a leading German company in the field of cybersecurity, founded in 1995.”

Source: RevenueBase Database · checked Nov 4, 2026
18Partial evidenceMartinsried, GermanyHQ checked Nov 4, 202651-20028 contacts →

Partial evidence

“microCAT ist ein führender Full-Service-Provider für IT-Produkte und -Dienstleistungen mit einem klaren Fokus auf IT-Security.”

Source: RevenueBase Database · checked Nov 4, 2026
19Indirect evidenceBochum, GermanyHQ checked Nov 4, 202651-20027 contacts →

Indirect evidence

“PHYSEC stands for pioneering solutions in secure digitalisation.”

Source: RevenueBase Database · checked Nov 4, 2026
20Indirect evidenceKötz, GermanyHQ checked Nov 4, 202611-5026 contacts →

Indirect evidence

“Die esko-systems GmbH betreut Mittelstands- und Industriekunden in allen Fragen der IT-Sicherheit.”

Source: RevenueBase Database · checked Nov 4, 2026
21Indirect evidenceBremen, GermanyHQ checked Nov 4, 202651-20026 contacts →

Indirect evidence

“Mehr Schutz vor Angriffen aus dem Cyberraum: Cyberkriminalität ist eine der größten Bedrohungen unserer Zeit.”

Source: RevenueBase Database · checked Nov 4, 2026
22Indirect evidenceLeipzig, GermanyHQ checked Nov 4, 202611-5025 contacts →

Indirect evidence

“Rhebo provides simple and effective cybersecurity solutions for Operational Technology and distributed industrial assets for the energy sector, critical infrastructure and…”

Source: RevenueBase Database · checked Nov 4, 2026

Showing 22 of 233 iot security companies based in Germany

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Iot security companies based in Germany at a glance

As of Nov 4, 2026
36.8%Verified-email coverage
21.5Average contacts per company
1-10Median size (employees)
9.4%Largest-city concentration · Munich
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
115
11-50
64
51-200
33
201-500
7
501-1,000
3
1,001-5,000
4

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 233 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 iot security 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 “iot security 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 iot security 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 iot security 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, 1,845 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 November 4, 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 do IoT security companies do?

IoT security companies protect connected devices, networks, data, and applications from unauthorized access, disruption, and misuse. The list includes 233 companies based in Germany.

How many IoT security companies are based in Germany?

The directory lists 233 IoT security companies based in Germany, with contact details for 5,015 professionals and 1,845 email addresses.

Where are IoT security companies located?

IoT security companies on this list are located across Germany. Munich is the single most-represented city among the companies on the list.

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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.