Company lists · Data verified August 2026

Top 25 Cybersecurity and defense software companies based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 56 companies tracked

There are 56 cybersecurity and defense software companies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 5,675 professional contacts across them, including 2,242 with verified work emails and 141 with mobile numbers. Brussels is the largest hub.

This list covers cybersecurity and defense software 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.

56Companies

5,675Contacts tracked

2,242Verified emails

141Mobile numbers

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The 25 largest cybersecurity and defense software companies based in Belgium

Ranked by team size

Top 25 of 56 cybersecurity and defense software 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	Orange Cyberdefense	n/a	1,001-5,000	3,706	2,083
2	Terma Group	n/a	1,001-5,000	1,522	50
3	Wibu-Systems	Zaventem	51-200	87	12
4	Leonardo Belgium	Grace-Hollogne	51-200	51	1
5	Caminos	Tielt	n/a	48	3
6	Osavul	n/a	11-50	27	19
7	Jimber	Oostkamp	11-50	21	13
8	Thales Cyber Solutions Belgium	n/a	11-50	20	1
9	Actwise	Kontich	11-50	18	10
10	Bats Belgian Advanced Technology Systems S.A	n/a	11-50	17	9
11	MCG	Ottignies-Louvain-La-Neuve	1-10	16	8
12	Curios	n/a	1-10	10	4
13	Netcure	Zaventem	1-10	9	7
14	Brand Solutions Europe	Sint-Niklaas	1-10	8	4
15	Resilix	n/a	1-10	5	3
16	Icteryus	Gentbrugge	1-10	4	2
17	Infosec4you	Bruxelles Bruxelles	11-50	3	2
18	OZOOS	Waterloo	1-10	3	2
19	Threatproof	n/a	11-50	2	2
20	Kemsec	Vilvoorde	1-10	2	2
21	Webmatics	Dendermonde	1-10	2	1
22	Flowz-It Cyberprotection For Smes	n/a	1-10	1	1
23	Cyberxpert	Antwerpen	1-10	1	1
24	Cloud Security Solutions BV	Brussels	1-10	1	1
25	Securenza	Genk	1-10	1	1

Showing 25 of 56 cybersecurity and defense software companies based in Belgium

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Cybersecurity and defense software companies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 3 HQs

141Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Cybersecurity and defense software companies by metro

Metro	Companies
Cybersecurity and defense software companies in Brussels	3
Cybersecurity and defense software companies in Zaventem	3
Cybersecurity and defense software companies in Sint-Niklaas	2
Cybersecurity and defense software companies in Waterloo	2
Cybersecurity and defense software companies in Anderlecht	2
Cybersecurity and defense software companies in Ottignies-Louvain-La-Neuve Na	1
Cybersecurity and defense software companies in Grace-Hollogne	1

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 and defense software 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; 4 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 and defense software companies are there based in Belgium?

There are 56 cybersecurity and defense software companies headquartered in Belgium as of August 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 and defense software companies?

Brussels leads with 3 headquartered companies, followed by Zaventem (3) and Sint-Niklaas (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 2,242 verified decision-maker contacts tracked across these 56 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.