Company lists · Data refreshed September 2026
Top 25 Cyber consultancies based in Belgium
RevenueBase identified 599 cyber consultancies headquartered in Belgium as of September 2026 and tracks 3,976 professional contacts across them, including 1,736 with verified work emails and 118 with mobile numbers. Brussels is the largest hub.
This list covers cyber consultancies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest cyber consultancies based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 315 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 189 contacts → | ||||
Indirect evidence “Wavenet is a growing ICT company providing cutting-edge IT services and solutions based on the latest technologies.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 183 contacts → | ||||
Indirect evidence “With over 25 years of experience and a team of 185 experts, we support more than 900 businesses in their digital transformation, securing their environments and developing their…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 102 contacts → | ||||
Indirect evidence “Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 88 contacts → | ||||
Partial evidence “Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 87 contacts → | ||||
Indirect 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: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 83 contacts → | ||||
Indirect evidence “Prodata Systems is a Belgian IT integrator that has been managing for many years business critical networks and cybersecurity environments in the public and private sector.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 67 contacts → | ||||
Indirect evidence “At Toreon, we believe that security is vital for people to live and work confidently, with trust in our digital society.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 55 contacts → | ||||
Indirect evidence “Smart, Lean, Agile.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 51 contacts → | ||||
Indirect evidence “Tailored, end-to-end solutions, suited to your cybersecurity needs.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Indirect evidence “Shinka IT est un intégrateur spécialisé en réseau, sécurité informatique et analyse de flux.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 42 contacts → | ||||
Indirect evidence “At Keystone Solutions, we specialize in bridging technology and talent to deliver a seamless IT experience.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 41 contacts → | ||||
Indirect evidence “ClearMedia, een dochteronderneming van Proximus, biedt betrouwbare en veilige ICT-oplossingen die zijn afgestemd op de noden van succesvolle KMO’s.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Indirect evidence “IT Anywhere - Managed IT Services – The solution for SMEs that want to outsource their IT management.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 36 contacts → | ||||
Indirect evidence “Wij zijn leverancier van totaaloplossingen op het vlak van ICT en bieden onze diensten aan in heel Vlaanderen, met focus op Oost- en West-Vlaanderen.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 34 contacts → | ||||
Indirect evidence “Beone est une société spécialisée dans la consultance I.T.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 31 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Indirect evidence “Myrmidons IT consulting offers advice and solutions to help businesses implement and use technologies.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 28 contacts → | ||||
Indirect 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: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 contacts → | ||||
Indirect evidence “Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 24 contacts → | ||||
Indirect evidence “Eocene Group is an ICT consultancy company.* Advice * Fixed price projects * Expertise * Software development * Creative and web design * Training * Business assistance * IT…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 contacts → | ||||
Indirect evidence “We are crafters.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 23 contacts → | ||||
Indirect evidence “Leading OPNS, a cybersecurity firm designing and implementing enterprise-grade, vendor-neutral security architectures for banks, healthcare institutions, and government…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 22 contacts → | ||||
Indirect evidence “As a strategic partner of Okta, SailPoint, Wiz, and Netskope, we deliver end-to-end cybersecurity across identity, cloud, and data.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 contacts → | ||||
Indirect evidence “The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cyber consultancies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names cyber consultancies.
- Partial evidence
- Its own public description names part of cyber consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cyber consultancies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 599 cyber consultancies based in Belgium
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Cyber consultancies based in Belgium at a glance
As of Sep 24, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 26.0dCompany record updated
Median 69.0dHow 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 cyber consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Belgium whose own description of what they do matches “cyber consultancies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cyber consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among cyber consultancies, 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 its RevenueBase Smart Search 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, 1,736 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 24, 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
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cyber consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many cyber consultancies are there based in Belgium?
RevenueBase identified 599 cyber consultancies 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?
Nviso Security, headquartered in Belgium, tops this list with the largest team on record.
Which city has the most cyber consultancies?
Brussels leads with 44 headquartered companies, followed by Antwerp (20) and Bruxelles (14).
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 1,736 verified decision-maker contacts tracked across these 599 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 24, 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 Smart Search, 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.