Company lists · Data refreshed November 2026

Top 24 Cybersecurity consultancies based in Luxembourg

RevenueBase identified 101 company matches for cybersecurity consultancies associated with Luxembourg as of November 2026 and tracks 651 professional contacts across them, including 226 with verified work emails. Luxembourg is the largest hub.

This list covers company matches for cybersecurity consultancies associated with Luxembourg, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
101Companies
651Contacts tracked
226Verified emails
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The 24 largest cybersecurity consultancies based in Luxembourg

Ranked by team size
Top 24 of 101 company matches for cybersecurity consultancies based in Luxembourg, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKockelscheuer, LuxembourgHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Alcyone Consulting propose à ses clients Grand Compte une expertise reconnue dans les métiers de l'IT, Gouvernance, Compliance et se distingue par le Savoir-Faire et Savoir-Être…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Simac PSF – Your Trusted IT Partner in Luxembourg Simac PSF was established in 1997 in Luxembourg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPeppange, LuxembourgHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Squaremiled: Your Digital Infrastructure, Simplified and Secured.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchContern, LuxembourgHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“dartalis is a regional leader and an independent company focused on information security since 2001.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWindhof, LuxembourgHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Grâce à ses experts certifiés Microsoft, Elgon vous conseille et vous accompagne dans votre adoption du Cloud, tout en garantissant la pérennité de votre infrastructure et de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLuxembourgHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Cyber Security / Cloud Computing / IT Consulting / Staffing Solutions F3C Systems is specialized in providing, maintaining, and operating secure IT Infrastructure for its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDudelange, LuxembourgHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“La technologie améliore notre quotidien et transforme les pratiques professionnelles bien au-delà de ce que l’on aurait pu imaginer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Snowball Technology is a cybersecurity consulting firm focused on providing cloud security solutions and services to protect organizations and individuals from cyber threats.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLuxembourgHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Located and active in Luxembourg, but also in the neighbouring countries, ADRONH is a young company of Cyber Security consultants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLuxembourgHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Empowering Your Business with Secure & Scalable IT Solutions Since 2005, Global IT Services PSF (GITS PSF) has been a trusted Luxembourg-based partner, delivering high-performance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCapellen, LuxembourgHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Since 1980, Computerland has been transforming the IT challenges of Belgian and Luxembourgish SMEs into growth opportunities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchContern, LuxembourgHQ recorded Nov 6, 20261-109 contacts →

Exact match

“We provide independent consulting services in the information security field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNiederanven, LuxembourgHQ recorded Nov 6, 202611-509 contacts →

Exact match

“itrust consulting has become a recognised and trustworthy actor in the Information Security field in Luxembourg and even throughout Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLuxembourgHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Your data must be kept safe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSteinfort, LuxembourgHQ recorded Nov 6, 20261-107 contacts →

Exact match

“F3S – Facility, Security, Safety & Services F3S, précurseur!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Cybersecurity Consultancy focused on delivering actionable and smart security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHowald, LuxembourgHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Rempart-International en quelques mots.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDudelange, LuxembourgHQ recorded Nov 6, 20261-104 contacts →

Exact match

“When it comes to IT and Digital Services, you deserve effectiveness and quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHosingen, LuxembourgHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Wir sind ein innovatives Start-Up Unternehmen Mit Tätigkeiten in folgenden Bereichen: • Informatik für sicheres Netzwerk und eine Solide Grundstruktur • Technik für mehr…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchFilsdorf, LuxembourgHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Die Firma SSL ist Ihr Ansprechpartner in Luxembourg, wenn es um den Vertrieb von professionellen Sicherheits- und ICT- Lösungen geht.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLuxembourgHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Alzette Information Security is a consulting and training company specialized in information security, providing exceptionally high quality, tailor-made services to customers…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWindhof, LuxembourgHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We provide comprehensive services to support your business by leveraging strategies to drive people, process, information and technology considerations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchStrassen, LuxembourgHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Protéine Sàrl est une société multidisciplinaire spécialisée dans la protection des données, la stratégie en intelligence artificielle, l’outsourcing pharmaceutique, le marketing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLuxembourgHQ recorded Nov 6, 202651-2002 contacts →

Exact match

“Excellium Services is a cybersecurity services company established in Luxembourg since 2012 and more recently in Belgium, with activities and partnerships in Europe and Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 24 of 101 cybersecurity consultancies based in Luxembourg

See the full list, filter by size, metro and specialty, and access 226 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity consultancies based in Luxembourg at a glance

As of Nov 6, 2026
34.7%Verified-email coverage
6.4Average contacts per company
1-10Median size (employees)
49.5%Largest-city concentration · Luxembourg
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
25
51-200
10
1,001-5,000
1
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Luxembourg, so it is reported there. Company counts and contact totals on this page are exact for Luxembourg, over 101 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Luxembourg whose business descriptions match “cybersecurity consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 226 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity consultancies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity consultancies are there based in Luxembourg?

RevenueBase identified 101 company matches for cybersecurity consultancies associated with Luxembourg as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ACO Human Capital tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cybersecurity consultancies?

Luxembourg leads with 50 company records, followed by Bettembourg (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 limited free results with 500 credits to start. Upgrading provides access to the 226 professional contacts with verified work emails tracked across these 101 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.