Company lists · Data refreshed September 2026

Top 11 Ransomware intelligence providers based in Belgium

RevenueBase identified 29 ransomware intelligence providers headquartered in Belgium as of September 2026 and tracks 618 professional contacts across them, including 311 with verified work emails. Brussels is the largest hub.

This list covers ransomware intelligence providers 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 21, 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 21, 2026 86% judged on-target in blind review
29Companies
618Contacts tracked
311Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 11 largest ransomware intelligence providers based in Belgium

Ranked by team size
Top 11 of 29 ransomware intelligence providers based in Belgium, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ransomware intelligence providers: 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
1Indirect evidenceBrussels, BelgiumHQ checked Sep 21, 2026201-500315 contacts →

Indirect 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 21, 2026
2Partial evidenceAartselaar, BelgiumHQ checked Sep 21, 202651-200102 contacts →

Partial 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 21, 2026
3Indirect evidenceMont-saint-guibert, BelgiumHQ checked Sep 21, 202651-20088 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceBelgiumHQ checked Sep 21, 202611-5020 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceFroyennes, BelgiumHQ checked Sep 21, 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 21, 2026
6Indirect evidenceAntwerp, BelgiumHQ checked Sep 21, 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 21, 2026
7Indirect evidenceKontich, BelgiumHQ checked Sep 21, 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 21, 2026
8Indirect evidenceHasselt, BelgiumHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceNamur, BelgiumHQ checked Sep 21, 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 21, 2026
10Indirect evidencePlancenoit, BelgiumHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“FlowZ-IT is your cybersecurity company assisting companies and public organizations in the Benelux.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceGeel, BelgiumHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“Welcome to JustGuard: Empowering Cybersecurity for a Safer World!”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 11 of 29 ransomware intelligence providers based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 311 reachable decision-makers.

Free signup · no credit card

View the full list →

Ransomware intelligence providers based in Belgium at a glance

As of Sep 21, 2026
50.3%Verified-email coverage
21.3Average contacts per company
1-10Median size (employees)
10.3%Largest-city concentration · Brussels
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
5
51-200
2
201-500
1

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 29 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 ransomware intelligence providers, 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 “ransomware intelligence providers”. 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 ransomware intelligence providers), 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 ransomware intelligence providers, 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, 311 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 21, 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 ransomware intelligence providers, 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 ransomware intelligence providers are there based in Belgium?

RevenueBase identified 29 ransomware intelligence providers 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 ransomware intelligence providers?

Brussels leads with 3 headquartered companies, followed by Antwerp (2) and Erpe-Mere (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 311 verified decision-maker contacts tracked across these 29 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 29 ransomware intelligence providers 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.