Company lists · Data refreshed September 2026

Top 25 Industrial cybersecurity companies based in Belgium

RevenueBase identified 76 industrial cybersecurity companies headquartered in Belgium as of September 2026 and tracks 6,224 professional contacts across them, including 2,278 with verified work emails and 247 with mobile numbers. Antwerp is the largest hub.

This list covers industrial cybersecurity companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
76Companies
6,224Contacts tracked
2,278Verified emails
247Mobile numbers
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The 25 largest industrial cybersecurity companies based in Belgium

Ranked by team size
Top 25 of 76 industrial cybersecurity companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names industrial cybersecurity companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Approach CyberIndirect evidence
Mont-saint-guibert, BelgiumHQ checked Sep 3, 202651-20093

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

Source: company website · checked Sep 3, 2026
2
ACENPartial evidence
Kontich, BelgiumHQ checked Sep 3, 202651-20050

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

Source: company website · checked Sep 3, 2026
3
SertalinkPartial evidence
St-niklaas, BelgiumHQ checked Sep 3, 202611-5027

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

Source: company website · checked Sep 3, 2026
4
JimberPartial evidence
Oostkamp, BelgiumHQ checked Sep 3, 202611-5021

“Protecting companies of all sizes with user-friendly, innovative and affordable cybersecurity solutions.”

Source: company website · checked Sep 3, 2026
5
Resilient SecurityPartial evidence
Antwerp, BelgiumHQ checked Sep 3, 202611-5020

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

Source: company website · checked Sep 3, 2026
6BelgiumHQ checked Sep 3, 202611-5020

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

Source: company website · checked Sep 3, 2026
7
ActwiseIndirect evidence
Kontich, BelgiumHQ checked Sep 3, 202611-5018

“ActWise is the partner of choice for securing your identities and protecting what matters most within your company.”

Source: company website · checked Sep 3, 2026
8
MCGIndirect evidence
Ottignies-Louvain-La-Neuve, BelgiumHQ checked Sep 3, 20261-1016

“Notre collaboration vous permet de vous défendre face aux diverses cyberattaques complexes et structurées pour protéger vos actifs, hébergés en interne ou dans le Cloud, et ainsi…”

Source: company website · checked Sep 3, 2026
9
SplynterIndirect evidence
Kontich, BelgiumHQ checked Sep 3, 20261-1010

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

Source: company website · checked Sep 3, 2026
10Kontich, BelgiumHQ checked Sep 3, 202611-5010

“Soterics is more than a service provider.”

Source: company website · checked Sep 3, 2026
11
CuriosIndirect evidence
BelgiumHQ checked Sep 3, 20261-1010

“Curiosity is a powerful force.”

Source: company website · checked Sep 3, 2026
12
Defend-OtPartial evidence
Kampenhout, BelgiumHQ checked Sep 3, 20261-106

“Protecting What Keeps the World Running At Defend-OT, we specialize in cybersecurity for Operational Technology (OT) and forming the bridge between IT, helping organizations…”

Source: company website · checked Sep 3, 2026
13
AspidaIndirect evidence
BelgiumHQ checked Sep 3, 20261-105

“At, we understand the unique challenges of securing Operational Technology environments.”

Source: company website · checked Sep 3, 2026
14
ResilixIndirect evidence
Hasselt, BelgiumHQ checked Sep 3, 20261-105

“At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.”

Source: company website · checked Sep 3, 2026
15
GuardisPartial evidence
Hannut, BelgiumHQ checked Sep 3, 20261-105

“Guardis helps organizations design, secure and operate their IT infrastructure, from cloud-native environments to industrial systems.”

Source: company website · checked Sep 3, 2026
16
Apex NetworksIndirect evidence
Wingene, BelgiumHQ checked Sep 3, 20261-104

“Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.”

Source: company website · checked Sep 3, 2026
17
SoteriaPartial evidence
Ghent, BelgiumHQ checked Sep 3, 20261-104

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

Source: company website · checked Sep 3, 2026
18
IcteryusIndirect evidence
Gentbrugge, BelgiumHQ checked Sep 3, 20261-104

“To protect global enterprises from emerging cyber security threats by delivering reliable and transparent services around the clock.”

Source: company website · checked Sep 3, 2026
19
Infosec4youIndirect evidence
Bruxelles Bruxelles, BelgiumHQ checked Sep 3, 202611-503

“INFOSEC4YOU est une Start-up spécialisée exclusivement dans la cybersécurité, nous protégeons les données, les entreprises et les citoyens contre la cybercriminalité et les…”

Source: company website · checked Sep 3, 2026
20
QfirstIndirect evidence
Bilzen, BelgiumHQ checked Sep 3, 20261-103

“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…”

Source: company website · checked Sep 3, 2026
21
SyntoryIndirect evidence
Rumst, BelgiumHQ checked Sep 3, 202611-502

“Together, we can build a more secure and resilient digital world.”

Source: company website · checked Sep 3, 2026
22
KemsecPartial evidence
Vilvoorde, BelgiumHQ checked Sep 3, 20261-102

“KemSec provides a comprehensive portfolio of integrated cyber security solutions providing unified enterprise wide protection for operators of industrial environments.”

Source: company website · checked Sep 3, 2026
23
Odsc SprlIndirect evidence
Namur, BelgiumHQ checked Sep 3, 20261-102

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

Source: company website · checked Sep 3, 2026
24
Layer 9 NetworksIndirect evidence
Ghent, BelgiumHQ checked Sep 3, 20261-102

“Layer 9 Networks aims to become a paramount network security partner that reflects premium value based on unsurpassed service, superior quality and the highest standards of…”

Source: company website · checked Sep 3, 2026
25BelgiumHQ checked Sep 3, 20261-101

“FlowZ-IT is your cybersecurity company assisting companies and public organizations in the Benelux.”

Source: company website · checked Sep 3, 2026

Showing 25 of 76 industrial cybersecurity companies based in Belgium

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Industrial cybersecurity companies based in Belgium at a glance

As of Sep 3, 2026
1-10Median size (employees)
AntwerpLargest hub · 6 HQs
247Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
47
11-50
22
51-200
3
201-500
2
1,001-5,000
2

Verified emails by last verification

0–30
0
31–60
141
61–90
1,339
90–180
786
180+
12

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 industrial cybersecurity companies, 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 Belgium whose own description of what they do matches “industrial cybersecurity companies”. 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 industrial cybersecurity companies, 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 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, 2,278 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 3, 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 industrial cybersecurity companies are there based in Belgium?

RevenueBase identified 76 industrial cybersecurity companies 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?

Approach Cyber, headquartered in Mechelen, tops this list with the largest team on record.

Which city has the most industrial cybersecurity companies?

Antwerp leads with 6 headquartered companies, followed by Kontich (5) and Brussels (3).

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 2,278 verified decision-maker contacts tracked across these 76 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 3, 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.