Company lists · Data verified August 2026

Top 10 Cybersecurity startups based in Luxembourg

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 34 companies tracked

There are 34 cybersecurity startups headquartered in Luxembourg (RevenueBase, August 2026). RevenueBase tracks 183 professional contacts across them, including 50 with verified work emails and 3 with mobile numbers. Luxembourg is the largest hub.

This list covers cybersecurity startups headquartered in Luxembourg, 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.

34Companies

183Contacts tracked

50Verified emails

3Mobile numbers

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The 10 largest cybersecurity startups based in Luxembourg

Ranked by team size

Top 10 of 34 cybersecurity startups based in Luxembourg, 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	Incert GIE	Leudelange	51-200	45	26
2	F3c-Systems	Luxembourg	11-50	14	6
3	Eset Belux	Dudelange	11-50	14	1
4	Adronh	Luxembourg	11-50	11	1
5	Snowball Technology	Leudelange	11-50	9	6
6	Cubic Consulting Sarl	Leudelange	1-10	9	4
7	Excellium Services	Luxembourg	51-200	8	1
8	Itrs S.À R.L	Hosingen	1-10	4	3
9	Stowtech	Bertrange	1-10	2	1
10	Linosec	Luxembourg	1-10	1	1

Showing 10 of 34 cybersecurity startups based in Luxembourg

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Cybersecurity startups based in Luxembourg at a glance

As of Aug 28, 2026

1-10Median size (employees)

LuxembourgLargest hub · 17 HQs

3Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Cybersecurity startups by metro

Metro	Companies
Cybersecurity startups in Luxembourg	17
Cybersecurity startups in Leudelange	3
Cybersecurity startups in Esch-Sur-Alzette	3
Cybersecurity startups in Flaxweiler Grevenmacher	1
Cybersecurity startups in Dalheim	1
Cybersecurity startups in Senningerberg	1
Cybersecurity startups in Hosingen	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 startups”, with match quality audited by blind human judging, and headquartered in Luxembourg.
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 startups are there based in Luxembourg?

There are 34 cybersecurity startups headquartered in Luxembourg as of August 2026 (RevenueBase).

What is the largest company on this list?

Incert GIE, headquartered in Leudelange, tops this list with the largest team on record.

Which city has the most cybersecurity startups?

Luxembourg leads with 17 headquartered companies, followed by Leudelange (3) and Esch-Sur-Alzette (3).

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 50 verified decision-maker contacts tracked across these 34 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.