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.
The 25 largest cybersecurity defense consultants based in Belgium
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 2,083 |
| 2 | “Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 48 |
| 3 | “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, 2026Thanks. The Data Team will review it. | 65 |
| 4 | “Xalient ondersteunt toonaangevende organisaties bij het beschermen van hun meest waardevolle middelen: hun medewerkers, applicaties en data.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 53 |
| 5 | “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, 2026Thanks. The Data Team will review it. | 43 |
| 6 | “Tailored, end-to-end solutions, suited to your cybersecurity needs.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 30 |
| 7 | “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, 2026Thanks. The Data Team will review it. | 19 |
| 8 | “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, 2026Thanks. The Data Team will review it. | 13 |
| 9 | “Protecting companies of all sizes with user-friendly, innovative and affordable cybersecurity solutions.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 13 |
| 10 | “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, 2026Thanks. The Data Team will review it. | 13 |
| 11 | “Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 14 |
| 12 | Thales Cyber Solutions BelgiumIndirect evidence “At Thales Cyber Solutions Belgium, we strive for security & privacy.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 1 |
| 13 | “The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 12 |
| 14 | “ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 10 |
| 15 | “Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 7 |
| 16 | “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, 2026Thanks. The Data Team will review it. | 6 |
| 17 | “A&P offers consulting expertise in data protection, cybersecurity and IT & Digital governance” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 1 |
| 18 | “At Splynter we want to help companies understand their adversaries and how to combat them.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 8 |
| 19 | “Curiosity is a powerful force.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 4 |
| 20 | “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, 2026Thanks. The Data Team will review it. | 7 |
| 21 | “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, 2026Thanks. The Data Team will review it. | 4 |
| 22 | “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, 2026Thanks. The Data Team will review it. | 5 |
| 23 | “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, 2026Thanks. The Data Team will review it. | 5 |
| 24 | “Wij geloven dat cybersecurity niet zo complex hoeft te zijn.” Source: company website · checked Sep 1, 2026Thanks. The Data Team will review it. | 4 |
| 25 | “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, 2026Thanks. The Data Team will review it. | 3 |
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, 2026Companies by employee count
Cybersecurity defense consultants by metro
| Metro | Companies |
|---|---|
| Cybersecurity defense consultants in Brussels | 22 |
| Cybersecurity defense consultants in Antwerp | 13 |
| Cybersecurity defense consultants in Antwerpen | 6 |
| Cybersecurity defense consultants in Kontich | 6 |
| Cybersecurity defense consultants in Mechelen | 4 |
| Cybersecurity defense consultants in Sint-Niklaas | 3 |
| Cybersecurity defense consultants in Genk | 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 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.
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