Company lists · Data refreshed September 2026
Top 14 Network security consultants based in Luxembourg
RevenueBase identified 35 network security consultants headquartered in Luxembourg as of September 2026 and tracks 172 professional contacts across them, including 53 with verified work emails and 4 with mobile numbers. Luxembourg is the largest hub.
This list covers network security consultants headquartered in Luxembourg, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 14 largest network security consultants based in Luxembourg
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 22 | ||||
“dartalis is a regional leader and an independent company focused on information security since 2001.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14 | ||||
“La technologie améliore notre quotidien et transforme les pratiques professionnelles bien au-delà de ce que l’on aurait pu imaginer.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 13 | ||||
“Cyber Security / Cloud Computing / IT Consulting / Staffing Solutions F3C Systems is specialized in providing, maintaining, and operating secure IT Infrastructure for its…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 11 | ||||
“Located and active in Luxembourg, but also in the neighbouring countries, ADRONH is a young company of Cyber Security consultants.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 10 | ||||
“Cybersecurity Consultancy focused on delivering actionable and smart security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9 | ||||
“Snowball Technology is a cybersecurity consulting firm focused on providing cloud security solutions and services to protect organizations and individuals from cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8 | ||||
“We provide independent consulting services in the information security field.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 | ||||
“itrust consulting has become a recognised and trustworthy actor in the Information Security field in Luxembourg and even throughout Europe.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Excellium ServicesIndirect evidence | 8 | |||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 | ||||
“Alzette Information Security is a consulting and training company specialized in information security, providing exceptionally high quality, tailor-made services to customers…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2 | ||||
“We provide comprehensive services to support your business by leveraging strategies to drive people, process, information and technology considerations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2 | ||||
“CipherQuest provides information security consulting services for public and private organizations throughout the world, specializing in Penetration and Vulnerability Testing…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1 | ||||
“N-Lux is providing high added value IT consulting services such as DevSecOps, container orchestration, Cloud Computing and IT Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 14 of 35 network security consultants based in Luxembourg
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 53 reachable decision-makers.
Free signup · no credit card
Network security consultants based in Luxembourg at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among network security consultants, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in Luxembourg whose own description of what they do matches “network security consultants”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among network security consultants, and records with no verified work email. Companies headquartered outside Luxembourg are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 53 across the full list. 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 September 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many network security consultants are there based in Luxembourg?
RevenueBase identified 35 network security consultants headquartered in Luxembourg as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Dartalis, headquartered in Contern, tops this list with the largest team on record.
Which city has the most network security consultants?
Luxembourg leads with 15 headquartered companies, followed by Contern (2) and Esch-Sur-Alzette (2).
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 53 verified decision-maker contacts tracked across these 35 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 35 network security consultants based in Luxembourg. Start with a free account, no credit card.
Get the full listRelated lists
Network security consultants by geography
- Network security consultants based in the United States
- Network security consultants based in the United Kingdom
- Network security consultants based in Canada
- Network security consultants based in France
- Network security consultants based in Australia
- Network security consultants based in Brazil
- Network security consultants based in Germany
- Network security consultants based in the Netherlands
- Network security consultants based in Spain
- Network security consultants based in Italy
- Network security consultants based in Mexico
- Network security consultants based in South Africa
Browse the directory
Browse: Companies home · All Luxembourg lists · All Network security consultants lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Network security consultants based in the United States
- Network security consultants based in the United Kingdom
- Network security consultants based in Canada
- Network security consultants based in France
- Network security consultants based in Australia
- Network security consultants based in Brazil