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, how directly it supports the match, 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 SmartSearch, 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 Match evidence 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. Evidence rates how directly each company's own description names network security consulting companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Sits SecuredevicePartial evidence
Søborg, DenmarkHQ checked Sep 5, 202611-5041

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

Source: company website · checked Sep 5, 2026
2
ItavisIndirect evidence
Klampenborg, DenmarkHQ checked Sep 5, 202611-5024

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

Source: company website · checked Sep 5, 2026
3
Defensive GroupPartial evidence
Solrod Strand Zealand, DenmarkHQ checked Sep 5, 202611-5020

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

Source: company website · checked Sep 5, 2026
4
2c NetworksPartial evidence
Viby J, DenmarkHQ checked Sep 5, 202611-5017

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

Source: company website · checked Sep 5, 2026
5
Ceta Cyber DefencePartial evidence
Værløse, DenmarkHQ checked Sep 5, 202611-5011

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

Source: company website · checked Sep 5, 2026
6
LCGIndirect evidence
Næstved, DenmarkHQ checked Sep 5, 202611-509

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

Source: company website · checked Sep 5, 2026
7
Haze Networks APSPartial evidence
København, DenmarkHQ checked Sep 5, 20261-109

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

Source: company website · checked Sep 5, 2026
8
CybernordicIndirect evidence
Copenhagen, DenmarkHQ checked Sep 5, 20261-108

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

Source: company website · checked Sep 5, 2026
9
Cyber PartnersIndirect evidence
Dragør, DenmarkHQ checked Sep 5, 20261-107

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

Source: company website · checked Sep 5, 2026
10
BanshiePartial evidence
DenmarkHQ checked Sep 5, 202611-506

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

Source: company website · checked Sep 5, 2026
11
OpenitPartial evidence
Hvidovre, DenmarkHQ checked Sep 5, 20261-106

“OpenIT offers IT Network Consultants.”

Source: company website · checked Sep 5, 2026
12
Teamit APSIndirect evidence
Kolding, DenmarkHQ checked Sep 5, 202611-504

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

Source: company website · checked Sep 5, 2026
13
Nil815Indirect evidence
Copenhagen, DenmarkHQ checked Sep 5, 20261-102

“NIL815 operates on a Business First principle.”

Source: company website · checked Sep 5, 2026
14
SekuritetIndirect evidence
Albertslund, DenmarkHQ checked Sep 5, 20261-102

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

Source: company website · checked Sep 5, 2026
15
IT ExperterneStrong evidence
Odense Sv, DenmarkHQ checked Sep 5, 20261-102

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

Source: company website · checked Sep 5, 2026
16
AH Consult APSIndirect evidence
Hårlev, DenmarkHQ checked Sep 5, 20261-101

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

Source: company website · checked Sep 5, 2026
17
Peventio CybersecurityPartial evidence
København V, DenmarkHQ checked Sep 5, 20261-101

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

Source: company website · checked Sep 5, 2026
18
QualsecStrong evidence
Horsens, DenmarkHQ checked Sep 5, 20261-101

“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: company website · checked Sep 5, 2026
19
VZ SecurePartial evidence
Copenhagen, DenmarkHQ checked Sep 5, 20261-101

“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: company website · 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
1-10Median size (employees)
Copenhagen Capital Of DenmarkLargest hub · 3 HQs
8Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

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

Verified emails by last verification

0–30
49
31–60
3
61–90
0
90–180
0
180+
2

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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 SmartSearch, 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.