Company lists · Data refreshed September 2026

Top 25 Cybersecurity consultancies based in Belgium

RevenueBase identified 645 cybersecurity consultancies headquartered in Belgium as of September 2026 and tracks 7,468 professional contacts across them, including 2,780 with verified work emails and 205 with mobile numbers. Brussels is the largest hub.

This list covers cybersecurity consultancies headquartered in Belgium, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review
645Companies
7,468Contacts tracked
2,780Verified emails
205Mobile numbers
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The 25 largest cybersecurity consultancies based in Belgium

Ranked by team size
Top 25 of 645 cybersecurity consultancies based in Belgium, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consultancies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDiegem, BelgiumHQ checked Sep 24, 20265,001-10,0001,419 contacts →

Indirect evidence

“See a different world.”

Source: RevenueBase Database · checked Sep 24, 2026
2Indirect evidenceNivelles, BelgiumHQ checked Sep 24, 2026501-1,000739 contacts →

Indirect evidence

“Easi is a Belgian IT company founded in offering state-of-the-art solutions and services to the mid-market, in the domains of software development, IT infrastructure, cloud and…”

Source: RevenueBase Database · checked Sep 24, 2026
3Indirect evidenceAntwerpen, BelgiumHQ checked Sep 24, 2026n/a683 contacts →

Indirect evidence

“Intigriti is the trusted leader in crowdsourced security, empowering the world’s largest organizations to find and fix vulnerabilities before cybercriminals can exploit them.”

Source: RevenueBase Database · checked Sep 24, 2026
4Indirect evidenceBrussels, BelgiumHQ checked Sep 24, 2026201-500315 contacts →

Indirect evidence

“NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…”

Source: RevenueBase Database · checked Sep 24, 2026
5Indirect evidenceMerelbeke, BelgiumHQ checked Sep 24, 202651-200183 contacts →

Indirect evidence

“With over 25 years of experience and a team of 185 experts, we support more than 900 businesses in their digital transformation, securing their environments and developing their…”

Source: RevenueBase Database · checked Sep 24, 2026
6Indirect evidenceGhent, BelgiumHQ checked Sep 24, 2026201-500154 contacts →

Indirect evidence

“From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.”

Source: RevenueBase Database · checked Sep 24, 2026
7Partial evidenceAartselaar, BelgiumHQ checked Sep 24, 202651-200102 contacts →

Partial evidence

“Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…”

Source: RevenueBase Database · checked Sep 24, 2026
8Indirect evidenceMont-saint-guibert, BelgiumHQ checked Sep 24, 202651-20088 contacts →

Indirect evidence

“Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.”

Source: RevenueBase Database · checked Sep 24, 2026
9Indirect evidenceMerelbeke, BelgiumHQ checked Sep 24, 202651-20087 contacts →

Indirect evidence

“Spotit is the trusted advisor for its customers and collaborates with them on innovative security & networking architectures that bring a big strategic advantage and insight.”

Source: RevenueBase Database · checked Sep 24, 2026
10Partial evidenceZaventem, BelgiumHQ checked Sep 24, 202651-20083 contacts →

Partial evidence

“Prodata Systems is a Belgian IT integrator that has been managing for many years business critical networks and cybersecurity environments in the public and private sector.”

Source: RevenueBase Database · checked Sep 24, 2026
11Partial evidenceLeuven, BelgiumHQ checked Sep 24, 202611-5073 contacts →

Partial evidence

“Phished is an AI-driven cybersecurity platform that combines interactive security awareness training with zero-trust email and browser protection.”

Source: RevenueBase Database · checked Sep 24, 2026
12Indirect evidenceAntwerpen, BelgiumHQ checked Sep 24, 202651-20067 contacts →

Indirect evidence

“At Toreon, we believe that security is vital for people to live and work confidently, with trust in our digital society.”

Source: RevenueBase Database · checked Sep 24, 2026
13Partial evidenceBrussels, BelgiumHQ checked Sep 24, 202651-20058 contacts →

Partial evidence

“Empower your business with seamless IT Modernization, fortify your future with cutting-edge Cybersecurity, and unlock potential with AI and Data-driven insights.”

Source: RevenueBase Database · checked Sep 24, 2026
14Partial evidenceBrussels, BelgiumHQ checked Sep 24, 202651-20053 contacts →

Partial evidence

“Leonardo Belgium (LBe) is a subsidiary of Leonardo S.p.A, a global leader in Aerospace, Defence, and Security, structured across several divisions including Cybersecurity…”

Source: RevenueBase Database · checked Sep 24, 2026
15Partial evidenceKontich, BelgiumHQ checked Sep 24, 202651-20051 contacts →

Partial evidence

“Tailored, end-to-end solutions, suited to your cybersecurity needs.”

Source: RevenueBase Database · checked Sep 24, 2026
16Indirect evidenceBeaufays, BelgiumHQ checked Sep 24, 202611-5046 contacts →

Indirect evidence

“Shinka IT est un intégrateur spécialisé en réseau, sécurité informatique et analyse de flux.”

Source: RevenueBase Database · checked Sep 24, 2026
17Indirect evidenceEvere Brussels, BelgiumHQ checked Sep 24, 2026201-50044 contacts →

Indirect evidence

“At Proximus NXT SpearIT we help companies work smarter, safer and faster.”

Source: RevenueBase Database · checked Sep 24, 2026
18Indirect evidenceBrussels, BelgiumHQ checked Sep 24, 202651-20042 contacts →

Indirect evidence

“At Keystone Solutions, we specialize in bridging technology and talent to deliver a seamless IT experience.”

Source: RevenueBase Database · checked Sep 24, 2026
19Indirect evidenceDeurne, BelgiumHQ checked Sep 24, 202611-5041 contacts →

Indirect evidence

“ClearMedia, een dochteronderneming van Proximus, biedt betrouwbare en veilige ICT-oplossingen die zijn afgestemd op de noden van succesvolle KMO’s.”

Source: RevenueBase Database · checked Sep 24, 2026
20Indirect evidenceZaventem, BelgiumHQ checked Sep 24, 202611-5037 contacts →

Indirect evidence

“IT Anywhere - Managed IT Services – The solution for SMEs that want to outsource their IT management.”

Source: RevenueBase Database · checked Sep 24, 2026
21Indirect evidenceWaregem, BelgiumHQ checked Sep 24, 202611-5036 contacts →

Indirect evidence

“Wij zijn leverancier van totaaloplossingen op het vlak van ICT en bieden onze diensten aan in heel Vlaanderen, met focus op Oost- en West-Vlaanderen.”

Source: RevenueBase Database · checked Sep 24, 2026
22Indirect evidenceHasselt, BelgiumHQ checked Sep 24, 202611-5032 contacts →

Indirect evidence

“The security experts for best-run companies with SAP systems.”

Source: RevenueBase Database · checked Sep 24, 2026
23Indirect evidenceKontich, BelgiumHQ checked Sep 24, 202611-5031 contacts →

Indirect evidence

“We love connecting people with their businesses.”

Source: RevenueBase Database · checked Sep 24, 2026
24Indirect evidenceHeverlee, BelgiumHQ checked Sep 24, 202611-5031 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 24, 2026
25Indirect evidenceLochristi, BelgiumHQ checked Sep 24, 202611-5028 contacts →

Indirect evidence

“The Collective is a highly-skilled and accredited Microsoft Partner with expertise in security, compliance, endpoint management, and cloud infrastructure.”

Source: RevenueBase Database · checked Sep 24, 2026

Showing 25 of 645 cybersecurity consultancies based in Belgium

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Cybersecurity consultancies based in Belgium at a glance

As of Sep 24, 2026
37.2%Verified-email coverage
2.7%Mobile-number coverage
11.6Average contacts per company
1-10Median size (employees)
9.3%Largest-city concentration · Brussels
Sep 24, 2026Page data refreshed

Companies by employee count

1-10
488
11-50
114
51-200
26
201-500
7
501-1,000
2
1,001-5,000
4
5,001-10,000
1
10001+
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

Company record updated

Median 76.0d

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 cybersecurity consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Belgium whose own description of what they do matches “cybersecurity consultancies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among cybersecurity consultancies, and records with no verified work email. Companies headquartered outside Belgium 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 its RevenueBase Smart Search 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, 2,780 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 24, 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

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cybersecurity consultancies are there based in Belgium?

RevenueBase identified 645 cybersecurity consultancies headquartered in Belgium 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?

Securitas Belgium, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most cybersecurity consultancies?

Brussels leads with 60 headquartered companies, followed by Antwerp (22) and Kontich (17).

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 2,780 verified decision-maker contacts tracked across these 645 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 24, 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 Smart Search, 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.