Company lists · Data verified August 2026

Top 22 Cybersecurity startups based in Denmark

Name: Cybersecurity startups based in Denmark
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 79 companies tracked

There are 79 cybersecurity startups headquartered in Denmark (RevenueBase, August 2026). RevenueBase tracks 847 professional contacts across them, including 171 with verified work emails and 37 with mobile numbers. Copenhagen is the largest hub.

This list covers cybersecurity startups headquartered in Denmark, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

79Companies

847Contacts tracked

171Verified emails

37Mobile numbers

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The 22 largest cybersecurity startups based in Denmark

Ranked by team size

Top 22 of 79 cybersecurity startups based in Denmark, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Reversec	n/a	201-500	173	110
2	Heimdal	Kobenhavn V Copenhagen	51-200	150	1
3	Kopenhagen Konsulting	n/a	51-200	68	2
4	Safesqr	Copenhagen	11-50	22	17
5	Secteer	Kobenhavn S	11-50	22	5
6	Defensive Group	Solrod Strand Zealand	11-50	20	2
7	Prueba Cybersecurity	Esbjerg Of Southern	11-50	19	1
8	Zafehouze LTD	Jyllinge	11-50	15	1
9	Ceta Cyber Defence	Vaerlose	11-50	11	3
10	Sagalabs	Frederiksberg Capital Of Denmark	1-10	10	1
11	LCG	Naestved Zealand	11-50	9	1
12	Digital Identity APS	Viby J Middle	1-10	9	1
13	Cybernordic	Copenhagen Capital Of Denmark	1-10	8	5
14	Cyberjuice	Copenhagen	1-10	8	2
15	Cyber Partners	Aarhus Central	1-10	7	4
16	Banshie	n/a	11-50	6	3
17	Opiniosec	Hellerup	1-10	5	2
18	Black Swan Institute	Frederiksberg C	1-10	3	1
19	Nil815	n/a	1-10	2	2
20	Qualsec	Horsens	1-10	1	1
21	Solutionlab	Hellerup	1-10	1	1
22	Peventio Cybersecurity	Kobenhavn V	1-10	1	1

Showing 22 of 79 cybersecurity startups based in Denmark

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Cybersecurity startups based in Denmark at a glance

As of Aug 28, 2026

1-10Median size (employees)

CopenhagenLargest hub · 9 HQs

37Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity startups by metro

Metro	Companies
Cybersecurity startups in Copenhagen	9
Cybersecurity startups in Hellerup	3
Cybersecurity startups in Kobenhavn S	2
Cybersecurity startups in Aalborg	2
Cybersecurity startups in Greve	2
Cybersecurity startups in Aarhus Central	2
Cybersecurity startups in Copenhagen Capital Of Denmark	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity startups”, with match quality audited by blind human judging, and headquartered in Denmark.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity startups are there based in Denmark?

There are 79 cybersecurity startups headquartered in Denmark as of August 2026 (RevenueBase).

What is the largest company on this list?

Reversec, headquartered in Denmark, tops this list with the largest team on record.

Which city has the most cybersecurity startups?

Copenhagen leads with 9 headquartered companies, followed by Hellerup (3) and Kobenhavn S (2).

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 171 verified decision-maker contacts tracked across these 79 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.