Company lists · Data verified August 2026

Top 25 Cybersecurity investigation companies based in Belgium

Name: Cybersecurity investigation companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 115 companies tracked

There are 115 cybersecurity investigation companies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 720 professional contacts across them, including 267 with verified work emails and 24 with mobile numbers. Brussels is the largest hub.

This list covers cybersecurity investigation companies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

115Companies

720Contacts tracked

267Verified emails

24Mobile numbers

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The 25 largest cybersecurity investigation companies based in Belgium

Ranked by team size

Top 25 of 115 cybersecurity investigation companies based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Approach Cyber	Mechelen	51-200	93	48
2	Xalient Benelux	Asse	201-500	74	53
3	Secwise	Leuven	11-50	29	19
4	Sertalink	Belsele	11-50	27	13
5	Jimber	Oostkamp	11-50	21	13
6	Upright Security	Kontich	11-50	21	13
7	Resilient Security	n/a	11-50	20	14
8	Thales Cyber Solutions Belgium	n/a	11-50	20	1
9	Actwise	Kontich	11-50	18	10
10	Redsystem	Froyennes	11-50	18	7
11	MCG	Ottignies-Louvain-La-Neuve	1-10	16	8
12	Splynter	Kontich	1-10	10	8
13	Curios	n/a	1-10	10	4
14	Netcure	Zaventem	1-10	9	7
15	Brand Solutions Europe	Sint-Niklaas	1-10	8	4
16	Cyberplan	Oostkamp	11-50	6	4
17	Sectricity Outsmart Hackers	Belgium Netherlands	1-10	5	3
18	Guardis	Hannut	1-10	5	2
19	Qfirst Nis2	Bilzen	1-10	4	4
20	Safepoint	Zoutleeuw	1-10	4	2
21	Icteryus	Gentbrugge	1-10	4	2
22	Infosec4you	Bruxelles Bruxelles	11-50	3	2
23	Cybervalue	Leuven	1-10	3	2
24	Cybereyes	Antwerpen Flemish	1-10	3	1
25	Threatproof	n/a	11-50	2	2

Showing 25 of 115 cybersecurity investigation companies based in Belgium

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Cybersecurity investigation companies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 6 HQs

24Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Cybersecurity investigation companies by metro

Metro	Companies
Cybersecurity investigation companies in Brussels	6
Cybersecurity investigation companies in Kontich	5
Cybersecurity investigation companies in Antwerp	5
Cybersecurity investigation companies in Antwerpen	3
Cybersecurity investigation companies in Gent	2
Cybersecurity investigation companies in Bilzen	2
Cybersecurity investigation companies in Mechelen	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity investigation companies”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity investigation companies are there based in Belgium?

There are 115 cybersecurity investigation companies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Approach Cyber, headquartered in Mechelen, tops this list with the largest team on record.

Which city has the most cybersecurity investigation companies?

Brussels leads with 6 headquartered companies, followed by Kontich (5) and Antwerp (5).

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 267 verified decision-maker contacts tracked across these 115 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 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.