Company lists · Data refreshed September 2026

Top 25 Cybersecurity software services based in Denmark

RevenueBase identified 114 cybersecurity software services headquartered in Denmark as of September 2026 and tracks 1,182 professional contacts across them, including 173 with verified work emails. Copenhagen is the largest hub.

This list covers cybersecurity software services headquartered in Denmark, 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 21, 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 21, 2026 86% judged on-target in blind review
114Companies
1,182Contacts tracked
173Verified emails
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The 25 largest cybersecurity software services based in Denmark

Ranked by team size
Top 25 of 114 cybersecurity software services based in Denmark, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity software services: 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 evidenceCopenhagen, DenmarkHQ checked Sep 21, 202651-200149 contacts →

Partial evidence

“Heimdal is an industry-leading unified and AI-powered cybersecurity solutions provider established in Copenhagen in 2014.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceCopenhagen, DenmarkHQ checked Sep 21, 20261,001-5,00096 contacts →

Partial evidence

“Conscia is a leading provider of cybersecurity and networking solutions for mission-critical IT infrastructure in large European organizations.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceÅarhus, DenmarkHQ checked Sep 21, 202651-20076 contacts →

Indirect evidence

“Cryptomathic helps businesses and governments to deliver trust and confidence in the digital world.”

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceCopenhagen, DenmarkHQ checked Sep 21, 202651-20068 contacts →

Partial evidence

“At Kopenhagen Konsulting, we dive deep into your objectives and become your reliable allies in exploring the unknown, with a special focus on cybersecurity, digitalization, risk…”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceKongens Lyngby, DenmarkHQ checked Sep 21, 202611-5041 contacts →

Indirect evidence

“QUITE SIMPLY, WE HELP COMPANIES THROUGH COMPLEX IT CHANGE At Mindcore we build on a unique set of capabilities combining deep understanding of business processes with hardcore…”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceSøborg, DenmarkHQ checked Sep 21, 202611-5041 contacts →

Indirect evidence

“SecureDevice A/S is a Danish owned IT-Security company.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceKlampenborg, DenmarkHQ checked Sep 21, 202611-5024 contacts →

Indirect evidence

“We ensure your traffic is optimized, inspected, and secured.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceSolrod Strand Zealand, DenmarkHQ checked Sep 21, 202611-5020 contacts →

Indirect evidence

“Defensive Group is a Danish security consultancy firm operating internationally.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceEsbjerg, DenmarkHQ checked Sep 21, 202611-5019 contacts →

Indirect evidence

“Vi er uvildige eksperter inden for it-sikkerhed.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceViby J, DenmarkHQ checked Sep 21, 202611-5017 contacts →

Indirect evidence

“2C Networks - Clarity in a complex world.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceJyllinge, DenmarkHQ checked Sep 21, 202611-5015 contacts →

Indirect evidence

“At Zafehouze, we deliver trusted IT security solutions to public authorities, security agencies, and medium-to-large enterprises worldwide.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceVærløse, DenmarkHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

“Cyber Event & Threat Assessors (CETA), offers advisory, services & solutions within cyber security.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceValby, DenmarkHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

“IT handler ikke længere kun om drift.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceNæstved, DenmarkHQ checked Sep 21, 202611-509 contacts →

Partial evidence

“LCG is a cybersecurity partner helping organisations strengthen resilience before, during and after a cyber attack.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceKøbenhavn, DenmarkHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

“Wi-Fi, IT-Infrastruktur, IT-Sikkerhed og Pentests Haze Networks stiller med 30+ års erfaring og solide kompetencer inden for netværk, infrastruktur & sikkerhed.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceViby J, DenmarkHQ checked Sep 21, 20261-109 contacts →

Partial evidence

“Digital Identity is a software company, dedicated to building high quality, targeted solutions in close collaboration with our customers - our technical expertise is in the area…”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceCopenhagen, DenmarkHQ checked Sep 21, 20261-108 contacts →

Indirect evidence

“Denmark is among the most digitized countries in the world.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceCopenhagen, DenmarkHQ checked Sep 21, 20261-108 contacts →

Partial evidence

“An automated & inclusive cybersecurity management platform for startups and small companies.”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceDragør, DenmarkHQ checked Sep 21, 20261-107 contacts →

Partial evidence

“We are Cyber Partners, your trusted partner in cybersecurity.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceVærløse, DenmarkHQ checked Sep 21, 20261-107 contacts →

Indirect evidence

“Hos Cyber Security Innovation hjælper vi organisationer med at navigere sikkert i en digital verden i konstant forandring.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceDenmarkHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“Banshie is a cyber security company that offers consultancy services.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceRoskilde, DenmarkHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“Fortifying Denmark's digital defense.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceKøbenhavn K, DenmarkHQ checked Sep 21, 202611-506 contacts →

Partial evidence

“Through a close collaboration with our partners, Trustbox has become a strong brand in the software security industry.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceHellerup, DenmarkHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Overblik og sikkerhed i din IT-infrastruktur Vi hjælper vores kunder og leverer software til at forsvare deres IT-infrastruktur og skabe et operationelt overblik, når de er udsat…”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceHolbæk, DenmarkHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“Hos ProteQ hjælper vi virksomheder og organisationer med alle IT- og GDPR-mæssige problematikker og spørgsmål.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 114 cybersecurity software services based in Denmark

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Cybersecurity software services based in Denmark at a glance

As of Sep 21, 2026
14.6%Verified-email coverage
10.4Average contacts per company
1-10Median size (employees)
10.5%Largest-city concentration · Copenhagen
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
72
11-50
30
51-200
5
201-500
2
501-1,000
1
1,001-5,000
4

Email recency for this list is measured worldwide rather than for Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, over 114 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 cybersecurity software services, 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 Denmark whose own description of what they do matches “cybersecurity software services”. 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 cybersecurity software services), 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 cybersecurity software services, and records with no verified work email. Companies headquartered outside Denmark 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, 173 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 21, 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 cybersecurity software services, 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 cybersecurity software services are there based in Denmark?

RevenueBase identified 114 cybersecurity software services headquartered in Denmark 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?

Heimdal, headquartered in Kobenhavn V Copenhagen, tops this list with the largest team on record.

Which city has the most cybersecurity software services?

Copenhagen leads with 12 headquartered companies, followed by Kobenhavn (4) and Hellerup (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 173 verified decision-maker contacts tracked across these 114 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 21, 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.