Company lists · Data refreshed September 2026

Top 25 Chief information security officer consultants based in Belgium

RevenueBase identified 114 company matches for chief information security officer consultants associated with Belgium as of September 2026 and tracks 738 professional contacts across them, including 373 with verified work emails. Brussels is the largest hub.

This list covers company matches for chief information security officer consultants 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 September 27, 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 Sep 27, 2026 How this list was built
114Companies
738Contacts tracked
373Verified emails
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The 25 largest chief information security officer consultants based in Belgium

Ranked by team size
Top 25 of 114 company matches for chief information security officer consultants based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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 matchBrussels, BelgiumHQ recorded Sep 27, 2026201-500315 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchAntwerp, BelgiumHQ recorded Sep 27, 202651-20067 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 · Sep 27, 2026 · View company records in RevenueBase
3Exact matchLeuven, BelgiumHQ recorded Sep 27, 202611-5028 contacts →

Exact match

“As Belgium’s largest Microsoft Security team and #1 Microsoft Gold Security Partner of the BeLux, we provide you a solid end-to-end security strategy to protect your organization…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchSt-niklaas, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase
5Exact matchBelgium France Luxembourg Netherlands, BelgiumHQ recorded Sep 27, 202611-5019 contacts →

Exact match

“Cresco is your partner in cybersecurity.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchAntwerp, BelgiumHQ recorded Sep 27, 202611-5018 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 · Sep 27, 2026 · View company records in RevenueBase
7Exact matchBrussels, BelgiumHQ recorded Sep 27, 202611-5011 contacts →

Exact match

“A&P offers consulting expertise in data protection, cybersecurity and IT & Digital governance”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchAntwerp, BelgiumHQ recorded Sep 27, 20261-1010 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 · Sep 27, 2026 · View company records in RevenueBase
9Exact matchGhent, BelgiumHQ recorded Sep 27, 202611-509 contacts →

Exact match

“Spinae provides independent advice and support to companies regarding information security, industrial control system security (ICS security) and computer networks.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchKontich, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase
11Exact matchSint-niklaas, BelgiumHQ recorded Sep 27, 20261-108 contacts →

Exact match

“Cybersecurity | Algemene IT-diensten | Digitale media Het digitale tijdperk heeft een enorme stroomversnelling gekend afgelopen jaren, dit is een trend die alleen nog maar zal…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchMechelen, BelgiumHQ recorded Sep 27, 202611-507 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 · Sep 27, 2026 · View company records in RevenueBase
13Exact matchBrussels, BelgiumHQ recorded Sep 27, 20261-106 contacts →

Exact match

“Qualitative Cyber Security and Advice.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchPaal-beringen, BelgiumHQ recorded Sep 27, 20261-106 contacts →

Exact match

“Highly skilled IT consultants with focus on network & security.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchMechelen, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase
16Exact matchBrussels, BelgiumHQ recorded Sep 27, 20261-104 contacts →

Exact match

“Leveraging our profound expertise in IT, Cybersecurity and Risk Management, DigiSôter aims to be your preferred partner in aligning these capabilities with your business needs.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchZoutleeuw, BelgiumHQ recorded Sep 27, 20261-104 contacts →

Exact match

“We are a team of cyber security experts with extensive experience in many industries.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchLeuven, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase
19Exact matchBilzen, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase
20Exact matchSint-niklaas, BelgiumHQ recorded Sep 27, 20261-103 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchBrussels, BelgiumHQ recorded Sep 27, 20261-103 contacts →

Exact match

“Claireity Consulting: Cybersecurity Reimagined At Claireity Consulting, we blend the art of security with the precision of technology to safeguard your digital journey.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchTienen, BelgiumHQ recorded Sep 27, 20261-103 contacts →

Exact match

“The heart of your company has to beat constantly and at the right pace so everything can run smoothly.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchLubbeek, BelgiumHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Mission: ZeroBit wants to offer an 'end-to-end' security for all types of companies.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchAntwerp, BelgiumHQ recorded Sep 27, 20261-102 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchNamur, BelgiumHQ recorded Sep 27, 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 · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 114 chief information security officer consultants based in Belgium

See the full list, filter by size, metro and specialty, and access 373 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Chief information security officer consultants based in Belgium at a glance

As of Sep 27, 2026
50.5%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
11.4%Largest-city concentration · Brussels
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
90
11-50
19
51-200
2
201-500
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 114 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 “chief information security officer consultants” 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 373 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 September 27, 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 “chief information security officer consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many chief information security officer consultants are there based in Belgium?

RevenueBase identified 114 company matches for chief information security officer consultants associated with Belgium as of September 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?

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

Which city has the most chief information security officer consultants?

Brussels leads with 13 company records, followed by Antwerp (10) and Kontich (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 373 professional contacts with verified work emails tracked across these 114 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 September 27, 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.