Company lists · Data refreshed October 2026

Top 25 Information security consultancies based in Belgium

RevenueBase identified 222 company matches for information security consultancies associated with Belgium as of October 2026 and tracks 1,157 professional contacts across them, including 505 with verified work emails. Brussels is the largest hub.

This list covers company matches for information security consultancies 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 October 1, 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 Oct 1, 2026 How this list was built
222Companies
1,157Contacts tracked
505Verified emails
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The 25 largest information security consultancies based in Belgium

Ranked by team size
Top 25 of 222 company matches for information security consultancies based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
2Exact matchAntwerp, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
3Exact matchZaventem, BelgiumHQ recorded Oct 1, 202611-5037 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLeuven, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
5Exact matchSt-niklaas, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
6Exact matchBelgium France Luxembourg Netherlands, BelgiumHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“Cresco is your partner in cybersecurity.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchAntwerp, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
8Exact matchTurnhout, BelgiumHQ recorded Oct 1, 202611-5017 contacts →

Exact match

“RST consultancy guides your company to the desired level of security.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchHasselt, BelgiumHQ recorded Oct 1, 202611-5016 contacts →

Exact match

“At Privatum, we understand that information forms the foundation of the modern business world.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchZaventem, BelgiumHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“AC AUTOMATION CENTER is a company based out of 85 Excelsiorlaan, Zaventem, Belgium.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchErpe-mere, BelgiumHQ recorded Oct 1, 202611-5012 contacts →

Exact match

“Uw beveiligingsfirma in Oost-Vlaanderen ACTIEF IN 5 DOMEINEN In 2007 richtte Hans Rottiers de beveiligingsfirma Cobra Technology op.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchBrussels, BelgiumHQ recorded Oct 1, 202611-5011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchAntwerp, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
14Exact matchZaventem, BelgiumHQ recorded Oct 1, 20261-109 contacts →

Exact match

“In a world where everything is connected and people are online all the time, data and resources are distributed and mobile.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchGhent, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
16Exact matchSeraing, BelgiumHQ recorded Oct 1, 20261-108 contacts →

Exact match

“Our services: • Digital transformation: Strategy, needs analysis, diagnostics, project management, IT governance, etc.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchSint-niklaas, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
18Exact matchMechelen, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
19Exact matchZwevezele, BelgiumHQ recorded Oct 1, 20261-107 contacts →

Exact match

“IT-infrastructuur & cybersecurity NIS2 compliance advies 24/7 monitoring & response Bedrijfskritische continuïteit Transformeren uw IT van risicofactor naar concurrentievoordeel.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchAarschot, BelgiumHQ recorded Oct 1, 20261-106 contacts →

Exact match

“Bij Fox & Fish Cyberdefense werken we op vier domeinen om uw organisatie te beveiligen tegen hacking en cyberaanvallen- Cybersecurity audits & risicoanalyses - Bewustmaking &…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchOostkamp, BelgiumHQ recorded Oct 1, 202611-506 contacts →

Exact match

“Wij geloven dat cybersecurity niet zo complex hoeft te zijn.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchLouvain-la-neuve, BelgiumHQ recorded Oct 1, 20261-106 contacts →

Exact match

“Expertise spécialisée : Nous sommes à la pointe au niveau des nouvelles technologies informatiques qui sont en perpétuelle évolution.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchBrussels, BelgiumHQ recorded Oct 1, 20261-106 contacts →

Exact match

“Qualitative Cyber Security and Advice.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchPaal-beringen, BelgiumHQ recorded Oct 1, 20261-106 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchAarschot, BelgiumHQ recorded Oct 1, 20261-106 contacts →

Exact match

“We help you protect your people, data and operations by delivering integrated consultancy, expert training and engineered solutions that safeguard your organisation from modern…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 222 information security consultancies based in Belgium

See the full list, filter by size, metro and specialty, and access 505 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Information security consultancies based in Belgium at a glance

As of Oct 1, 2026
43.6%Verified-email coverage
5.2Average contacts per company
1-10Median size (employees)
11.7%Largest-city concentration · Brussels
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
181
11-50
34
51-200
3
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 222 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 “information security 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 505 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 October 1, 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 “information security consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many information security consultancies are there based in Belgium?

RevenueBase identified 222 company matches for information security consultancies associated with Belgium as of October 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 information security consultancies?

Brussels leads with 26 company records, followed by Antwerp (13) and Turnhout (5).

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 505 professional contacts with verified work emails tracked across these 222 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 October 1, 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.