Company lists · Data verified August 2026

Top 25 Defense cybersecurity companies based in Finland

Name: Defense cybersecurity companies based in Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 44 companies tracked

There are 44 defense cybersecurity companies headquartered in Finland (RevenueBase, August 2026). RevenueBase tracks 691 professional contacts across them, including 293 with verified work emails and 29 with mobile numbers. Helsinki is the largest hub.

This list covers defense cybersecurity companies headquartered in Finland, 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.

44Companies

691Contacts tracked

293Verified emails

29Mobile numbers

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The 25 largest defense cybersecurity companies based in Finland

Ranked by team size

Top 25 of 44 defense cybersecurity companies based in Finland, 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	sekoia.io	Helsinki	51-200	132	83
2	Nixu Corporation	Espoo	501-1,000	129	70
3	Digital14	Tampere	501-1,000	118	20
4	Military Work	Helsinki	501-1,000	110	6
5	2ns Cybersecurity OY	Espoo	11-50	43	29
6	Arctic Security LTD	Oulu	11-50	20	15
7	Fraktal	Helsinki	11-50	17	12
8	Promea	Helsinki	11-50	14	9
9	Cyberwatch Finland	Helsinki	1-10	11	5
10	Fitsec LTD	Espoo	1-10	10	1
11	Rugged Tooling	Oulu	11-50	7	6
12	Unbreach	Espoo	1-10	7	6
13	Cyberismo	Tampere	1-10	6	5
14	Cyberdo OY	Helsinki	1-10	5	5
15	Braveson	Jyvaskyla	1-10	5	4
16	Fordione OY	Helsinki	1-10	4	3
17	Finceptum OY	Riihimaki	1-10	3	2
18	Käpy A.I. OY	Kuopio	1-10	3	1
19	ROXEC	Tampere	1-10	3	1
20	Tougher ONE	Tampere	1-10	2	2
21	45 Cyber Labs	Espoo	1-10	2	1
22	Elbit Systems Finland	Tampere	1-10	2	1
23	Optimesys	Espoo	51-200	1	1
24	Tekve OY	Helsinki	1-10	1	1
25	Kasin Consulting OY	Helsinki	1-10	1	1

Showing 25 of 44 defense cybersecurity companies based in Finland

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Defense cybersecurity companies based in Finland at a glance

As of Aug 28, 2026

1-10Median size (employees)

HelsinkiLargest hub · 16 HQs

29Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Defense cybersecurity companies by metro

Metro	Companies
Defense cybersecurity companies in Helsinki	16
Defense cybersecurity companies in Tampere	8
Defense cybersecurity companies in Espoo	6
Defense cybersecurity companies in Oulu	4
Defense cybersecurity companies in Kuopio	2
Defense cybersecurity companies in Mariehamn	1
Defense cybersecurity companies in Jarvenpaa	1

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 “defense cybersecurity companies”, with match quality audited by blind human judging, and headquartered in Finland.
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 defense cybersecurity companies are there based in Finland?

There are 44 defense cybersecurity companies headquartered in Finland as of August 2026 (RevenueBase).

What is the largest company on this list?

sekoia.io, headquartered in Helsinki, tops this list with the largest team on record.

Which city has the most defense cybersecurity companies?

Helsinki leads with 16 headquartered companies, followed by Tampere (8) and Espoo (6).

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 293 verified decision-maker contacts tracked across these 44 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.