Company lists · Data refreshed November 2026

Top 25 Third party security assessment services based in Belgium

RevenueBase identified 92 company matches for third party security assessment services associated with Belgium as of November 2026 and tracks 835 professional contacts across them, including 346 with verified work emails. Brussels is the largest hub.

This list covers company matches for third party security assessment services associated with Belgium, 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 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
92Companies
835Contacts tracked
346Verified emails
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The 25 largest third party security assessment services based in Belgium

Ranked by team size
Top 25 of 92 company matches for third party security assessment services based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchGhent, BelgiumHQ recorded Nov 5, 2026201-500259 contacts →

Exact match

“Software development has changed.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchMont-saint-guibert, BelgiumHQ recorded Nov 5, 202651-20095 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchAntwerp, BelgiumHQ recorded Nov 5, 202651-20070 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSt-niklaas, BelgiumHQ recorded Nov 5, 202611-5028 contacts →

Exact match

“Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchNiel, BelgiumHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“The main goal of the Security Factory is to test/assess the current security maturity level of clients.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchAntwerp, BelgiumHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchMechelen, BelgiumHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“The philosophy underlying our approach is one of open-mindedness and flexibility, whereby we do not restrict ourselves to any particular vendor or product, but instead remain…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchAntwerp, BelgiumHQ recorded Nov 5, 20261-109 contacts →

Exact match

“Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchKontich, BelgiumHQ recorded Nov 5, 20261-108 contacts →

Exact match

“At Splynter we want to help companies understand their adversaries and how to combat them.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchMechelen, BelgiumHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Apogado is a vendor-neutral company focusing on the multidisciplinary field of information security, privacy, and eGovernment.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchBelgiumHQ recorded Nov 5, 202611-505 contacts →

Exact match

“At Thales Cyber Solutions Belgium, we strive for security & privacy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchGhent, BelgiumHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Experten in IT en OT Cyberveiligheid - Cybersecurity diensten op maat van uw organisatie- Security doorlichtingen, audits, pen-tests - NIS2, Cyfun en ISO27001 begeleidingen -…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLeuven, BelgiumHQ recorded Nov 5, 20261-103 contacts →

Exact match

“He who defends everything, defends nothing” - No IT Security team can monitor every application, network, system and information asset that a company has, no incident response…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchBilzen, BelgiumHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Qfirst helps companies to protect their data through both technical solutions and by applying cyber security processes and frameworks to their processes and their IT…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchSint-niklaas, BelgiumHQ recorded Nov 5, 20261-103 contacts →

Exact match

“At Spectre Advisory, we go beyond the basics of information security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchTurnhout, BelgiumHQ recorded Nov 5, 20261-102 contacts →

Exact match

“Robrechts & Thienpont guides your company to the desired security level.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchMechelen, BelgiumHQ recorded Nov 5, 20261-102 contacts →

Exact match

“The question no longer seems wether we are going to get hacked, but when.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchNamur, BelgiumHQ recorded Nov 5, 20261-102 contacts →

Exact match

“Chez ODSC, nous accompagnons les entreprises dans la sécurisation de leurs actifs numériques à travers une approche complète et humaine de la cybersécurité.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchAntwerp, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“I am a multi-skilled IT and Security Engineer with a solid background in networking, security and architecture, and hands on network and security support across multiple…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchBruges, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchWaremme, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“Cybersecurity specialization* At CyberInIT, we specialize in a full range of cybersecurity services, from in-depth security audits to the implementation of robust defense…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchLiege, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“OSINT - EASM - Our External Surface Assessment Tool provides actionable insights into your organization's vulnerabilities, no exploitation, just clarity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBrussels, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“Our passion for security runs deep and wide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchAntwerp, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“Coding Mammoth helps SaaS and product companies stay in control of their security and compliance.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchBrussels, BelgiumHQ recorded Nov 5, 20261-101 contacts →

Exact match

“For over 10 years, we have been helping our customers in all sectors to meet their needs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 92 third party security assessment services based in Belgium

See the full list, filter by size, metro and specialty, and access 346 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Third party security assessment services based in Belgium at a glance

As of Nov 5, 2026
41.4%Verified-email coverage
9.1Average contacts per company
1-10Median size (employees)
10.9%Largest-city concentration · Brussels
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
20
51-200
3
201-500
1
1,001-5,000
2

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 92 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 Belgium whose business descriptions match “third party security assessment services” 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 346 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 5, 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.

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 “third party security assessment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many third party security assessment services are there based in Belgium?

RevenueBase identified 92 company matches for third party security assessment services associated with Belgium 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?

Aikido Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most third party security assessment services?

Brussels leads with 10 company records, followed by Antwerp (9) and Mechelen (4).

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 346 professional contacts with verified work emails tracked across these 92 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 5, 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.