Company lists · Data refreshed September 2026

Top 25 Cybersecurity defense consultants based in Belgium

There are 219 cybersecurity defense consultants headquartered in Belgium (RevenueBase, September 2026). RevenueBase tracks 6,958 professional contacts across them, including 2,581 with verified work emails and 272 with mobile numbers. Brussels is the largest hub.

This list covers cybersecurity defense consultants 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 1, 2026.

219Companies
6,958Contacts tracked
2,581Verified emails
272Mobile numbers
Unlock all 219 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity defense consultants based in Belgium

Ranked by team size
Top 25 of 219 cybersecurity defense consultants based in Belgium, ranked by team size, largest first. Data refreshed Sep 1, 2026. Evidence rates how directly each company's own description names cybersecurity defense consultants: 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.
#CompanyHeadquartersEmployeesContactsVerified emails
1
Orange CyberdefensePartial evidence

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

Source: company website · checked Sep 1, 2026
Belgium1,001-5,0003,7062,083
2
Approach CyberIndirect evidence

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

Source: company website · checked Sep 1, 2026
Mechelen, Belgium51-2009348
3
SpotitIndirect evidence

“Spotit is the trusted advisor for its customers and collaborates with them on innovative security & networking architectures that bring a big strategic advantage and insight.”

Source: company website · checked Sep 1, 2026
Merelbeke, Belgium51-2008965
4
Xalient BeneluxIndirect evidence

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

Source: company website · checked Sep 1, 2026
Asse, Belgium201-5007453
5
ToreonIndirect evidence

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

Source: company website · checked Sep 1, 2026
Antwerpen, Belgium51-2006743
6
ACENPartial evidence

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

Source: company website · checked Sep 1, 2026
Kontich, Belgium51-2005030
7
SecwiseIndirect evidence

“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 Sep 1, 2026
Leuven, Belgium11-502919
8
SertalinkPartial evidence

“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 1, 2026
Belsele, Belgium11-502713
9
JimberPartial evidence

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

Source: company website · checked Sep 1, 2026
Oostkamp, Belgium11-502113
10
Upright SecurityPartial evidence

“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 Sep 1, 2026
Kontich, Belgium11-502113
11
Resilient SecurityStrong evidence

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

Source: company website · checked Sep 1, 2026
Belgium11-502014
12

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

Source: company website · checked Sep 1, 2026
Belgium11-50201
13
The Security FactoryIndirect evidence

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

Source: company website · checked Sep 1, 2026
Niel, Belgium11-501912
14
ActwiseIndirect evidence

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

Source: company website · checked Sep 1, 2026
Kontich, Belgium11-501810
15
RedsystemIndirect evidence

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

Source: company website · checked Sep 1, 2026
Froyennes, Belgium11-50187
16
PreteraIndirect evidence

“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 Sep 1, 2026
Brussels, Belgium11-50186
17

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

Source: company website · checked Sep 1, 2026
Ixelles, Belgium11-50111
18
SplynterIndirect evidence

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

Source: company website · checked Sep 1, 2026
Kontich, Belgium1-10108
19
CuriosIndirect evidence

“Curiosity is a powerful force.”

Source: company website · checked Sep 1, 2026
Belgium1-10104
20
NetcureIndirect evidence

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

Source: company website · checked Sep 1, 2026
Zaventem, Belgium1-1097
21
Brand Solutions EuropePartial evidence

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…”

Source: company website · checked Sep 1, 2026
Sint-Niklaas, Belgium1-1084
22
4netIndirect evidence

“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 Sep 1, 2026
Mechelen, Belgium11-5075
23
Fox&fish CyberdefensePartial evidence

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

Source: company website · checked Sep 1, 2026
Aarschot, Belgium1-1065
24
CyberplanPartial evidence

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

Source: company website · checked Sep 1, 2026
Oostkamp, Belgium11-5064
25
Focal Point SRLPartial evidence

“At Focal Point, we specialise in cyber defence capability development, cyber resilience, and operational readiness, helping governments, SOCs, and critical infrastructure…”

Source: company website · checked Sep 1, 2026
Belgium11-5063

Showing 25 of 219 cybersecurity defense consultants based in Belgium

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Cybersecurity defense consultants based in Belgium at a glance

As of Sep 1, 2026
1-10Median size (employees)
BrusselsLargest hub · 22 HQs
272Contacts with mobile numbers
Sep 1, 2026Data refreshed

Companies by employee count

1-10
166
11-50
37
51-200
7
201-500
3
1,001-5,000
3

Cybersecurity defense consultants by metro

MetroCompanies
Cybersecurity defense consultants in Brussels22
Cybersecurity defense consultants in Antwerp13
Cybersecurity defense consultants in Antwerpen6
Cybersecurity defense consultants in Kontich6
Cybersecurity defense consultants in Mechelen4
Cybersecurity defense consultants in Sint-Niklaas3
Cybersecurity defense consultants in Genk3

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 defense consultants, 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: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in Belgium whose own description of what they do matches “cybersecurity defense consultants”. 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 defense consultants, 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.
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, 2,581 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 1, 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 cybersecurity defense consultants are there based in Belgium?

There are 219 cybersecurity defense consultants headquartered in Belgium as of September 2026 (RevenueBase).

What is the largest company on this list?

Orange Cyberdefense, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most cybersecurity defense consultants?

Brussels leads with 22 headquartered companies, followed by Antwerp (13) and Antwerpen (6).

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 2,581 verified decision-maker contacts tracked across these 219 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 1, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.