Company lists · Data verified August 2026

Top 18 Cybersecurity firms based in Estonia

Name: Cybersecurity firms based in Estonia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 61 companies tracked

There are 61 cybersecurity firms headquartered in Estonia (RevenueBase, August 2026). RevenueBase tracks 428 professional contacts across them, including 103 with verified work emails and 13 with mobile numbers. Tallinn is the largest hub.

This list covers cybersecurity firms headquartered in Estonia, 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.

61Companies

428Contacts tracked

103Verified emails

13Mobile numbers

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The 18 largest cybersecurity firms based in Estonia

Ranked by team size

Top 18 of 61 cybersecurity firms based in Estonia, 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	Rangeforce, A Cyberbit Company	Tallinn	51-200	51	25
2	Cybexer Technologies	Tallinn	51-200	31	26
3	Datami Cybersecurity Services	Tallinn	11-50	24	3
4	Bugbounter	Tallinn	1-10	23	1
5	Clarified Security OÜ	Tallinn	11-50	21	18
6	Quantfall	Tallinn	11-50	12	6
7	Sekurno Cybersecurity	Tallinn	1-10	11	4
8	Talgen Cybersecurity	Tallinn	11-50	9	4
9	Scanfactory	Tallinn	11-50	7	2
10	Octicode	Tallinn	1-10	7	2
11	cybertech.global	Tartu	1-10	6	2
12	Cybertex Security	Tallinn	1-10	3	2
13	Cybers	City Centre	51-200	3	1
14	Cyberross OU	Tallinn	11-50	3	1
15	Instar Talent	Tallinn	1-10	2	2
16	Foxworx OÜ	Viimsi Vald	1-10	2	1
17	Kimova AI	Tallinn	1-10	2	1
18	cyberwise.space	Tallinn	1-10	1	1

Showing 18 of 61 cybersecurity firms based in Estonia

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Cybersecurity firms based in Estonia at a glance

As of Aug 28, 2026

1-10Median size (employees)

TallinnLargest hub · 46 HQs

13Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Cybersecurity firms by metro

Metro	Companies
Cybersecurity firms in Tallinn	46
Cybersecurity firms in Tallin	4
Cybersecurity firms in Tartu Linn	1
Cybersecurity firms in Peetri	1
Cybersecurity firms in Talinn	1
Cybersecurity firms in Kesklinna Linnaosa	1
Cybersecurity firms in Viimsi Vald	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 “cybersecurity firms”, with match quality audited by blind human judging, and headquartered in Estonia.
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 cybersecurity firms are there based in Estonia?

There are 61 cybersecurity firms headquartered in Estonia as of August 2026 (RevenueBase).

What is the largest company on this list?

Rangeforce, A Cyberbit Company, headquartered in Tallinn, tops this list with the largest team on record.

Which city has the most cybersecurity firms?

Tallinn leads with 46 headquartered companies, followed by Tallin (4) and Tartu Linn (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 103 verified decision-maker contacts tracked across these 61 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.