Company lists · Data refreshed September 2026

Top 24 Cyber risk assessment companies based in Belgium

RevenueBase identified 68 cyber risk assessment companies headquartered in Belgium as of September 2026 and tracks 718 professional contacts across them, including 349 with verified work emails. Antwerp is the largest hub.

This list covers cyber risk assessment 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
68Companies
718Contacts tracked
349Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 24 largest cyber risk assessment companies based in Belgium

Ranked by team size
Top 24 of 68 cyber risk assessment companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cyber risk assessment companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceBrussels, BelgiumHQ checked Sep 19, 2026201-500315 contacts →

Strong 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 19, 2026
2Partial evidenceMont-saint-guibert, BelgiumHQ checked Sep 19, 202651-20088 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceSt-niklaas, BelgiumHQ checked Sep 19, 202611-5028 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 19, 2026
4Partial evidenceBelgiumHQ checked Sep 19, 202611-5020 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceBelgium France Luxembourg Netherlands, BelgiumHQ checked Sep 19, 202611-5019 contacts →

Indirect evidence

“Cresco is your partner in cybersecurity.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceKontich, BelgiumHQ checked Sep 19, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceFroyennes, BelgiumHQ checked Sep 19, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceAntwerp, BelgiumHQ checked Sep 19, 20261-1010 contacts →

Indirect evidence

“Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceKontich, BelgiumHQ checked Sep 19, 20261-108 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceLeuven, BelgiumHQ checked Sep 19, 202611-508 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceSint-niklaas, BelgiumHQ checked Sep 19, 20261-108 contacts →

Indirect 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: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceAarschot, BelgiumHQ checked Sep 19, 20261-106 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceOostkamp, BelgiumHQ checked Sep 19, 202611-506 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceBelgium Netherlands United Kingdom, BelgiumHQ checked Sep 19, 20261-105 contacts →

Indirect evidence

“Most companies discover a security gap only after a breach.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceHannut, BelgiumHQ checked Sep 19, 20261-105 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceGentbrugge, BelgiumHQ checked Sep 19, 20261-104 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceBruxelles Bruxelles, BelgiumHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“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: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceLeuven, BelgiumHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“He who defends everything, defends nothing” - No IT Security team can monitor every application, network, system and information asset that a company has, no incident response…”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceBrussels, BelgiumHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“Claireity Consulting: Cybersecurity Reimagined At Claireity Consulting, we blend the art of security with the precision of technology to safeguard your digital journey.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceTurnhout, BelgiumHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Robrechts & Thienpont guides your company to the desired security level.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceLubbeek, BelgiumHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Mission: ZeroBit wants to offer an 'end-to-end' security for all types of companies.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceNamur, BelgiumHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceBruges, BelgiumHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceWallifornia, BelgiumHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

“Make an immediate tangible impact on the cybersecurity posture of your organization by leveraging the expertise of real hackers!”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 24 of 68 cyber risk assessment companies based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 349 reachable decision-makers.

Free signup · no credit card

View the full list →

Cyber risk assessment companies based in Belgium at a glance

As of Sep 19, 2026
48.6%Verified-email coverage
10.6Average contacts per company
1-10Median size (employees)
8.8%Largest-city concentration · Antwerp
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
47
11-50
17
51-200
2
201-500
2

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 68 companies.

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 cyber risk assessment companies, 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 risk assessment companies”. 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 risk assessment companies), 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 risk assessment 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 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, 349 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 19, 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 risk assessment companies, 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 risk assessment companies are there based in Belgium?

RevenueBase identified 68 cyber risk assessment 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?

Nviso Security, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most cyber risk assessment companies?

Antwerp leads with 6 headquartered companies, followed by Brussels (4) and Brussel (2).

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 349 verified decision-maker contacts tracked across these 68 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 68 cyber risk assessment companies based in Belgium. Start with a free account, no credit card.

Download this list →

Related lists

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.