Company lists · Data refreshed August 2026

Top 25 Cybersecurity companies based in Belgium

Our directory lists 252 cybersecurity companies based in Belgium, with 8,035 professional contacts and 2,679 email addresses. The list was last updated in August 2026, and Brussels is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 29, 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 Match evidence on every row Refreshed Aug 29, 2026 86% judged on-target in blind review
252Companies
8,035Contacts tracked
2,679Verified emails
291Mobile numbers
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The 25 largest cybersecurity companies based in Belgium

Ranked by team size
Top 25 of 252 cybersecurity companies based in Belgium, ranked by team size, largest first. Data refreshed Aug 29, 2026. Evidence rates how directly each company's own description names 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
Orange CyberdefenseStrong evidence
Belgium1,001-5,0003,706

“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.”

Source: company website · checked Aug 29, 2026
2
IntigritiIndirect evidence
Antwerpen, Belgiumn/a658

“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: company website · checked Aug 29, 2026
3
Approach CyberIndirect evidence
Mechelen, Belgium51-20093

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

Source: company website · checked Aug 29, 2026
4
Wibu-SystemsStrong evidence
Zaventem, Belgium51-20087

“Industrie40 and #IoT w/o #cybersecurity?#Software-powered business w/o a #licensing strategy?#CodeMeter drives a secure & prosperous smart future - we're hiring…”

Source: company website · checked Aug 29, 2026
5
PhishedIndirect evidence
Leuven, Belgium11-5076

“Phished is a cyber security awareness company that helps organizations to obtain a zero-incident-rate caused by human error.”

Source: company website · checked Aug 29, 2026
6
Xalient BeneluxIndirect evidence
Asse, Belgium201-50074

“Xalient ondersteunt toonaangevende organisaties bij het beschermen van hun meest waardevolle middelen: hun medewerkers, applicaties en data.”

Source: company website · checked Aug 29, 2026
7
SkyforceIndirect evidence
Belgium11-5059

“Skyforce est le partenaire sécurité des petites et moyennes entreprises.”

Source: company website · checked Aug 29, 2026
8
Leonardo BelgiumStrong evidence
Grace-Hollogne, Belgium51-20051

“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: company website · checked Aug 29, 2026
9
ACENStrong evidence
Kontich, Belgium51-20050

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

Source: company website · checked Aug 29, 2026
10
SecwiseIndirect evidence
Leuven, Belgium11-5029

“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…”

Source: company website · checked Aug 29, 2026
11
OsavulIndirect evidence
Belgium11-5027

“Osavul is a technology company that offers OSINT-powered AI solutions for situational awareness to empower governments, security organizations, and enterprises to effectively…”

Source: company website · checked Aug 29, 2026
12
SertalinkStrong evidence
Belsele, Belgium11-5027

“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 Aug 29, 2026
13
JimberStrong evidence
Oostkamp, Belgium11-5021

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

Source: company website · checked Aug 29, 2026
14
Upright SecurityStrong evidence
Kontich, Belgium11-5021

“As a strategic partner of Okta, SailPoint, Wiz, and Netskope, we deliver end-to-end cybersecurity across identity, cloud, and data.”

Source: company website · checked Aug 29, 2026
15
Resilient SecurityStrong evidence
Belgium11-5020

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

Source: company website · checked Aug 29, 2026
16Belgium11-5020

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

Source: company website · checked Aug 29, 2026
17
The Security FactoryIndirect evidence
Niel, Belgium11-5019

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

Source: company website · checked Aug 29, 2026
18
ActwiseIndirect evidence
Kontich, Belgium11-5018

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

Source: company website · checked Aug 29, 2026
19
RedsystemIndirect evidence
Froyennes, Belgium11-5018

“Our mission is to advise and support you in minimizing the attack surface that could threaten your business.”

Source: company website · checked Aug 29, 2026
20
PreteraIndirect evidence
Brussels, Belgium11-5018

“Pretera is an offensive security company offering a wide range of services such as network and application penetration testing, social engineering, and red teaming.”

Source: company website · checked Aug 29, 2026
21Kontich, Belgium11-5010

“Soterics is more than a service provider.”

Source: company website · checked Aug 29, 2026
22
Trium SecurityIndirect evidence
Aarschot, Belgium11-509

“Trium is expert in elektronische beveiliging sinds 1995.”

Source: company website · checked Aug 29, 2026
23Leuven, Belgium11-508

“Outpost24 helps organizations improve cyber resilience with a complete range of solutions that enable Continuous Threat Exposure Management (CTEM).”

Source: company website · checked Aug 29, 2026
24
4netIndirect evidence
Mechelen, Belgium11-507

“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…”

Source: company website · checked Aug 29, 2026
25
lisam.cloudStrong evidence
Ecaussinnes, Belgium11-506

“Lisam.Cloud is specialized in hypersecure cloud hosting solutions (strong focus on cybersecurity).”

Source: company website · checked Aug 29, 2026

Showing 25 of 252 cybersecurity companies based in Belgium

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Cybersecurity companies based in Belgium at a glance

As of Aug 29, 2026
1-10Median size (employees)
BrusselsLargest hub · 28 HQs
291Contacts with mobile numbers
Aug 29, 2026Data refreshed

Companies by employee count

1-10
187
11-50
46
51-200
11
201-500
3
501-1,000
1
1,001-5,000
3

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 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 “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 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, 2,679 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 August 29, 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.

Cybersecurity companies by metro

  • Cybersecurity companies in Brussels28

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 252 cybersecurity companies based in Belgium.

Which city has the most cybersecurity companies?

Brussels is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 8,035 professional contacts and 2,679 email addresses for the listed cybersecurity companies.

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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.