Company lists · Data verified August 2026

Top 25 Defense cybersecurity companies based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 99 companies tracked

There are 99 defense cybersecurity companies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 4,297 professional contacts across them, including 2,290 with verified work emails and 73 with mobile numbers. Antwerp is the largest hub.

This list covers defense cybersecurity 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.

99Companies

4,297Contacts tracked

2,290Verified emails

73Mobile numbers

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The 25 largest defense cybersecurity companies based in Belgium

Ranked by team size

Top 25 of 99 defense cybersecurity 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	Xalient Benelux	Asse	201-500	74	53
3	ACEN	Kontich	51-200	50	30
4	Caminos	Tielt	n/a	48	3
5	Sertalink	Belsele	11-50	27	13
6	Jimber	Oostkamp	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	Focal Point SRL	n/a	11-50	6	3
17	S.A.F.E	Aarschot	1-10	6	1
18	Resilix	n/a	1-10	5	3
19	Apex Networks	Wingene	1-10	4	3
20	Icteryus	Gentbrugge	1-10	4	2
21	Dashan	Tournai	1-10	4	2
22	Infosec4you	Bruxelles Bruxelles	11-50	3	2
23	Qfirst	Bilzen	1-10	3	2
24	Threatproof	n/a	11-50	2	2
25	Odsc Sprl	Namur	1-10	2	1

Showing 25 of 99 defense cybersecurity companies based in Belgium

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Defense cybersecurity companies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

AntwerpLargest hub · 6 HQs

73Contacts 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

Defense cybersecurity companies by metro

Metro	Companies
Defense cybersecurity companies in Antwerp	6
Defense cybersecurity companies in Brussels	6
Defense cybersecurity companies in Antwerpen	4
Defense cybersecurity companies in Kontich	4
Defense cybersecurity companies in Mont-Saint-Guibert	2
Defense cybersecurity companies in Namur	2
Defense cybersecurity companies in Anderlecht	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 “defense cybersecurity 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 defense cybersecurity companies are there based in Belgium?

There are 99 defense cybersecurity 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 defense cybersecurity companies?

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

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 2,290 verified decision-maker contacts tracked across these 99 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.