Company lists · Data refreshed September 2026

Top 25 Secure software development consultants based in Germany

RevenueBase identified 240 secure software development consultants headquartered in Germany as of September 2026 and tracks 1,568 professional contacts across them, including 764 with verified work emails. Berlin is the largest hub.

This list covers secure software development consultants 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
240Companies
1,568Contacts tracked
764Verified emails
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The 25 largest secure software development consultants based in Germany

Ranked by team size
Top 25 of 240 secure software development consultants based in Germany, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to secure software development consultants: 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
1Partial evidenceDarmstadt, GermanyHQ checked Sep 29, 2026201-500199 contacts →

Partial evidence

“Accso - Accelerated Solutions GmbH ist ein Software- und IT-Beratungshaus.”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceRöttenbach, GermanyHQ checked Sep 29, 202651-200118 contacts →

Strong evidence

“Agile software development, quality assurance and testing for safety-critical areas – for 40 years.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceBonn, GermanyHQ checked Sep 29, 202651-20067 contacts →

Partial evidence

“SRC Security Research & Consulting is committed to providing service in the areas of information technology and information security.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceLangenfeld (rheinland), GermanyHQ checked Sep 29, 202651-20063 contacts →

Partial 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 29, 2026
5Partial evidenceGarching, GermanyHQ checked Sep 29, 202651-20046 contacts →

Partial evidence

“HvS-Consulting AG is consulting large and medium-sized companies on the topic of cyber security since 2002.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceFulda, GermanyHQ checked Sep 29, 202651-20044 contacts →

Partial evidence

“Our SAP consulting firm, based in Fulda, is at the forefront of innovation in the field of SAP Security.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceDüsseldorf, GermanyHQ checked Sep 29, 202611-5032 contacts →

Partial evidence

“CLOUDYRION is a start-up for IT security consulting from Düsseldorf.”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceHeidelberg, GermanyHQ checked Sep 29, 202611-5032 contacts →

Partial evidence

“ERNW ist ein unabhängiger IT-Security Dienstleister mit Sitz in Heidelberg.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceMunich, GermanyHQ checked Sep 29, 202611-5028 contacts →

Partial evidence

“Simplifying Your Security Journey Welcome to mgm security partners GmbH – your reliable partner for simple and effective IT security solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceStuttgart, GermanyHQ checked Sep 29, 202611-5021 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 29, 2026
11Strong evidenceFrankfurt, GermanyHQ checked Sep 29, 202611-5020 contacts →

Strong evidence

“Excelsior is a modern software development company with a passion for quality and sustainable software solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceLangen, GermanyHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“Das Leistungsspektrum der BRISTOL GROUP reicht von der Beratung über die Konzeption, Implementierung und Integration von Software- und Hardware-Lösungen bis hin zu Schulung und…”

Source: RevenueBase Database · checked Sep 29, 2026
13Strong evidenceUlm, GermanyHQ checked Sep 29, 202611-5019 contacts →

Strong evidence

“SCHUTZWERK GmbH is an international IT security consultancy.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceCologne, GermanyHQ checked Sep 29, 202651-20018 contacts →

Indirect evidence

“Durch unsere Beratung helfen wir unseren Kunden die Sicherheit und Effizienz ihrer IT nachhaltig zu steigern und ihre IT-Risiken zu kontrollieren.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceZirndorf, GermanyHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“Qupe ist das IT-Beratungsunternehmen in Zirndorf.”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceUnterhaching, GermanyHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“Protection with Passion Seit über 20 Jahren entwickeln und implementieren wir Sicherheitsstrategien, die den Unternehmenserfolg unserer Kunden in den Mittelpunkt stellen.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceDüsseldorf, GermanyHQ checked Sep 29, 202611-5016 contacts →

Partial evidence

“protectONE - akkreditiertes und autorisiertes Consulting- & Trainingsunternehmen für IT Security Lösungen.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceMunich, GermanyHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“Book.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceDüsseldorf, GermanyHQ checked Sep 29, 202611-5015 contacts →

Indirect evidence

“Über den "Anmelden"-Button gelangst du zu unserem neusten Webinar.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceMunich, GermanyHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“ÜBER PROMETHOS Technologie muss nicht nur funktionieren – sie muss intelligent, effizient und sicher sein.”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceLimburg, GermanyHQ checked Sep 29, 202611-5013 contacts →

Partial evidence

“As an IT security consulting firm for exigent requirements, we conceive solutions guaranteeing our customers a permanent high added value in their Information Security and…”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceDortmund, GermanyHQ checked Sep 29, 202611-5013 contacts →

Partial evidence

“Security Assist – Die Sicherheitsarchitekten® Security Assist ist ein Spezialist mit langjähriger Erfahrung und Wissen in der Sicherheitsberatung in unterschiedlichsten Branchen…”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceLeipzig, GermanyHQ checked Sep 29, 202611-5012 contacts →

Partial evidence

“Wir bei Bitaggregat sind Experten im Bereich Security Engineering & Testing und spezialisieren uns auf den Schutz kritischer Infrastrukturen und Ressourcen.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceSaarbrücken, GermanyHQ checked Sep 29, 20261-1011 contacts →

Partial evidence

“Sicherheit können wir Wir sind sequire (für: security (engl: Sicherheit) und quire (lateinisch: können))!”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceBerlin, GermanyHQ checked Sep 29, 202611-5011 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, 2026

Showing 25 of 240 secure software development consultants based in Germany

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Secure software development consultants based in Germany at a glance

As of Sep 29, 2026
48.7%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
12.5%Largest-city concentration · Berlin
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
161
11-50
66
51-200
10
201-500
1

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 240 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 secure software development consultants, 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 “secure software development consultants”. 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 secure software development consultants), 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 secure software development consultants, 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, 764 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.

Secure software development consultants 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 secure software development consultants, 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 secure software development consultants are there based in Germany?

RevenueBase identified 240 secure software development consultants 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?

ACCSO, headquartered in Darmstadt, tops this list with the largest team on record.

Which city has the most secure software development consultants?

Berlin leads with 30 headquartered companies, followed by Munich (23) and Hamburg (11).

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 764 verified decision-maker contacts tracked across these 240 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.