Company lists · Data refreshed September 2026

Top 18 Cyber threat response companies based in Norway

RevenueBase identified 29 cyber threat response companies headquartered in Norway as of September 2026 and tracks 912 professional contacts across them, including 239 with verified work emails. Oslo is the largest hub.

This list covers cyber threat response companies headquartered in Norway, 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 19, 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 19, 2026 86% judged on-target in blind review
29Companies
912Contacts tracked
239Verified emails
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The 18 largest cyber threat response companies based in Norway

Ranked by team size
Top 18 of 29 cyber threat response companies based in Norway, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cyber threat response 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
1Indirect evidenceOslo, NorwayHQ checked Sep 19, 2026201-500345 contacts →

Indirect evidence

“With offices in Oslo, Stavanger, Trondheim, Stockholm, Copenhagen, Utrecht and London, we deliver cybersecurity services across Europe.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceOslo, NorwayHQ checked Sep 19, 202651-200138 contacts →

Partial evidence

“Netsecurity is a dedicated cyber security company that helps companies before, during and after an attack.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceOslo, NorwayHQ checked Sep 19, 202651-20084 contacts →

Indirect evidence

“At Defendable we have made it our mission to help make you and your company just that: defendable.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceHaugesund, NorwayHQ checked Sep 19, 202651-20076 contacts →

Partial evidence

“EMP Secure is full service IT-provider offering innovative IT technologies and cyber security solutions for businesses in various industries.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceNorwayHQ checked Sep 19, 202651-20046 contacts →

Indirect evidence

“IT-konsulentselskap”

Source: RevenueBase Database · checked Sep 19, 2026
6Partial evidenceOslo, NorwayHQ checked Sep 19, 202611-5043 contacts →

Partial evidence

“Omny protects industrial companies against cybersecurity threats by providing both holistic visibility into Operational Technology (OT) environments.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceOslo, NorwayHQ checked Sep 19, 202611-5036 contacts →

Indirect evidence

“Sicra ble grunnlagt i Norge i 2016 med en tydelig overbevisning: God forretning krever god sikkerhet.”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceSandnes, NorwayHQ checked Sep 19, 202611-5022 contacts →

Partial evidence

“ivolv is here to assist your organization in building effective protection and resilience against cyber attacks.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceNorwayHQ checked Sep 19, 202611-5018 contacts →

Indirect evidence

“BlueTree is an award-winning technology company, experts in delivering managed services for enterprise companies.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceLysaker, NorwayHQ checked Sep 19, 202611-5013 contacts →

Indirect evidence

“At TechAgrim, we are dedicated to delivering cutting-edge cybersecurity solutions, tailored to protect your digital assets.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceStavanger, NorwayHQ checked Sep 19, 202611-5011 contacts →

Indirect evidence

“OpenHorizon's intelligence platform identifies security-relevant indications and delivers structured alerts with operational context.”

Source: RevenueBase Database · checked Sep 19, 2026
12Strong evidenceOslo, NorwayHQ checked Sep 19, 202611-5011 contacts →

Strong evidence

“The Nordic Maritime Cyber Resilience Centre - NORMA Cyber provides centralised functions and services for its members such as threat intelligence, incident and crisis response.”

Source: RevenueBase Database · checked Sep 19, 2026
13Strong evidenceOslo, NorwayHQ checked Sep 19, 202611-5011 contacts →

Strong evidence

“Nordic Financial CERT (NFCERT) is a collaborative, member‑driven community working to safeguard the Nordic financial sector from cyber threats and financial crime.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceBrumunddal, NorwayHQ checked Sep 19, 20261-107 contacts →

Indirect evidence

“Houmb AS brings broad industrial and academic cybersecurity experience.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceOslo, NorwayHQ checked Sep 19, 20261-106 contacts →

Indirect evidence

“We are a team of certified security experts that are passionate about providing the best possible security service.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceOslo, NorwayHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Vår kjernevirksomhet er sikkerhetstesting og SOC-tjenester.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceVinterbro, NorwayHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceOslo, NorwayHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

“Cybersecurity advisory and consulting.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 18 of 29 cyber threat response companies based in Norway

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Cyber threat response companies based in Norway at a glance

As of Sep 19, 2026
26.2%Verified-email coverage
31.4Average contacts per company
11-50Median size (employees)
51.7%Largest-city concentration · Oslo
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
11
51-200
4
201-500
1

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 29 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 cyber threat response 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 Norway whose own description of what they do matches “cyber threat response 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 cyber threat response 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 cyber threat response companies, and records with no verified work email. Companies headquartered outside Norway 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, 239 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 19, 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 cyber threat response 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 cyber threat response companies are there based in Norway?

RevenueBase identified 29 cyber threat response companies headquartered in Norway 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?

Mnemonic, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most cyber threat response companies?

Oslo leads with 15 headquartered companies, followed by Brumunddal (1) and Egersund Egersund (1).

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 239 verified decision-maker contacts tracked across these 29 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 19, 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.