Company lists · Data refreshed September 2026

Top 19 Network security consulting companies based in Denmark

RevenueBase identified 54 network security consulting companies headquartered in Denmark as of September 2026 and tracks 269 professional contacts across them, including 54 with verified work emails and 8 with mobile numbers. Copenhagen Capital Of Denmark is the largest hub.

This list covers network security consulting companies 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 5, 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 5, 2026 86% judged on-target in blind review
54Companies
269Contacts tracked
54Verified emails
8Mobile numbers
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The 19 largest network security consulting companies based in Denmark

Ranked by team size
Top 19 of 54 network security consulting companies based in Denmark, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to network security consulting 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
1Partial evidenceSøborg, DenmarkHQ checked Sep 5, 202611-5041 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
2Indirect evidenceKlampenborg, DenmarkHQ checked Sep 5, 202611-5024 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
3Partial evidenceSolrod Strand Zealand, DenmarkHQ checked Sep 5, 202611-5020 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
4Partial evidenceViby J, DenmarkHQ checked Sep 5, 202611-5017 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
5Partial evidenceVærløse, DenmarkHQ checked Sep 5, 202611-5011 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
6Indirect evidenceNæstved, DenmarkHQ checked Sep 5, 202611-509 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
7Partial evidenceKøbenhavn, DenmarkHQ checked Sep 5, 20261-109 contacts →

Partial 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 5, 2026
8Indirect evidenceCopenhagen, DenmarkHQ checked Sep 5, 20261-108 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
9Indirect evidenceDragør, DenmarkHQ checked Sep 5, 20261-107 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
10Partial evidenceDenmarkHQ checked Sep 5, 202611-506 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
11Partial evidenceHvidovre, DenmarkHQ checked Sep 5, 20261-106 contacts →

Partial evidence

“OpenIT offers IT Network Consultants.”

Source: RevenueBase Database · checked Sep 5, 2026
12Indirect evidenceKolding, DenmarkHQ checked Sep 5, 202611-504 contacts →

Indirect evidence

“TeamIT er en højt certificeret IT-totalleverandør med hovedfokus på netværk og IT-sikkerhed.”

Source: RevenueBase Database · checked Sep 5, 2026
13Indirect evidenceCopenhagen, DenmarkHQ checked Sep 5, 20261-102 contacts →

Indirect evidence

“NIL815 operates on a Business First principle.”

Source: RevenueBase Database · checked Sep 5, 2026
14Indirect evidenceAlbertslund, DenmarkHQ checked Sep 5, 20261-102 contacts →

Indirect evidence

“Sekuritet leverer uvildig og dokumenterbar IT-sikkerhedsrådgivning til organisationer med egen IT-funktion.”

Source: RevenueBase Database · checked Sep 5, 2026
15Strong evidenceOdense Sv, DenmarkHQ checked Sep 5, 20261-102 contacts →

Strong evidence

“IT security, IT infrastructure, Risk analysis, IT revision, investigation of IT events, IT implementation and IT consulting.”

Source: RevenueBase Database · checked Sep 5, 2026
16Indirect evidenceHårlev, DenmarkHQ checked Sep 5, 20261-101 contacts →

Indirect evidence

“AH Consult ApS har mange års erfaring med netværkssikkerhed og påtager os ofte opgaver, der skal sikre alle komponenter i en IT-infrastruktur.”

Source: RevenueBase Database · checked Sep 5, 2026
17Partial evidenceKøbenhavn V, DenmarkHQ checked Sep 5, 20261-101 contacts →

Partial evidence

“Professional and flexible It-security solutions and services.”

Source: RevenueBase Database · checked Sep 5, 2026
18Strong evidenceHorsens, DenmarkHQ checked Sep 5, 20261-101 contacts →

Strong evidence

“With 30 years of experience in the IT industry, I’m considered a seasoned professional with expertise in areas of IT & Information security, engineering, consulting, and technical…”

Source: RevenueBase Database · checked Sep 5, 2026
19Partial evidenceCopenhagen, DenmarkHQ checked Sep 5, 20261-101 contacts →

Partial evidence

“Years of experience in the vibrant world of IP security eco-systems have enabled us to provide expert consultancy to achieve maximum results with the lowest TCO for our customers.”

Source: RevenueBase Database · checked Sep 5, 2026

Showing 19 of 54 network security consulting companies based in Denmark

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Network security consulting companies based in Denmark at a glance

As of Sep 5, 2026
20.1%Verified-email coverage
3.0%Mobile-number coverage
5.0Average contacts per company
1-10Median size (employees)
5.6%Largest-city concentration · Copenhagen Capital Of Denmark
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
38
11-50
14
51-200
1
1,001-5,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 network security consulting 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 Denmark whose own description of what they do matches “network security consulting 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 network security consulting 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 network security consulting companies, 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, 54 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 5, 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 network security consulting 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 network security consulting companies are there based in Denmark?

RevenueBase identified 54 network security consulting companies 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?

Sits Securedevice, headquartered in Soborg, tops this list with the largest team on record.

Which city has the most network security consulting companies?

Copenhagen Capital Of Denmark leads with 3 headquartered companies, followed by Albertslund (2) and Copenhagen (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 54 verified decision-maker contacts tracked across these 54 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 5, 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.