Company lists · Data verified August 2026

Top 17 Cybersecurity companies based in Helsinki, Finland

Name: Cybersecurity companies based in Helsinki, Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 35 companies tracked

Our directory lists 35 cybersecurity companies based in Helsinki, Finland, with 5,392 professional contacts and 451 email addresses. The list was last updated in August 2026, and Helsinki is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

35Companies

5,392Contacts tracked

451Verified emails

180Mobile numbers

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The 17 largest cybersecurity companies based in Helsinki, Finland

Ranked by team size

Top 17 of 35 cybersecurity companies based in Helsinki, 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	F-Secure Corporation	Helsinki	n/a	4,764	293
2	sekoia.io	Helsinki	51-200	132	83
3	Silverskin Information Security OY	Helsinki	11-50	25	9
4	Fraktal	Helsinki	11-50	17	12
5	Locotech OY	Helsinki	11-50	14	10
6	Promea	Helsinki	11-50	14	9
7	Reformo Networks	Helsinki	11-50	13	13
8	Cyberwatch Finland	Helsinki	1-10	11	5
9	Selfhack	Helsinki	1-10	7	3
10	Cyberdo OY	Helsinki	1-10	5	5
11	Fordione OY	Helsinki	1-10	4	3
12	Secflow OY	Helsinki	1-10	4	1
13	Phisherie	Helsinki	1-10	4	1
14	Cyber Security Finland	Helsinki	11-50	3	1
15	Daos Technologies OY LTD	Helsinki	1-10	2	1
16	Tekve OY	Helsinki	1-10	1	1
17	Kasin Consulting OY	Helsinki	1-10	1	1

Showing 17 of 35 cybersecurity companies based in Helsinki, Finland

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Cybersecurity companies based in Helsinki, Finland at a glance

As of Aug 28, 2026

1-10Median size (employees)

HelsinkiLargest hub · 35 HQs

180Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Cybersecurity companies by metro in Finland

Metro	Companies
Cybersecurity companies in Helsinki	35
Cybersecurity companies in Espoo	15
Cybersecurity companies in Tampere	7
Cybersecurity companies in Oulu	7
Cybersecurity companies in Vantaa	6
Cybersecurity companies in Kuopio	5
Cybersecurity companies in Riihimaki	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 companies”, with match quality audited by blind human judging, and headquartered in Helsinki, 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; 3 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 companies are in the directory?

The directory lists 35 cybersecurity companies based in Helsinki, Finland.

Which city has the most cybersecurity companies?

Helsinki is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 5,392 professional contacts and 451 email addresses for the listed cybersecurity companies.

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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.