Company lists · Data verified August 2026

Top 25 Cybersecurity service providers based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 244 companies tracked

There are 244 cybersecurity service providers headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 6,945 professional contacts across them, including 2,547 with verified work emails and 269 with mobile numbers. Brussels is the largest hub.

This list covers cybersecurity service providers 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.

244Companies

6,945Contacts tracked

2,547Verified emails

269Mobile numbers

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The 25 largest cybersecurity service providers based in Belgium

Ranked by team size

Top 25 of 244 cybersecurity service providers 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	Approach Cyber	Mechelen	51-200	93	48
3	Xalient Benelux	Asse	201-500	74	53
4	Toreon	Antwerpen	51-200	67	43
5	ACEN	Kontich	51-200	50	30
6	Secwise	Leuven	11-50	29	19
7	Sertalink	Belsele	11-50	27	13
8	Jimber	Oostkamp	11-50	21	13
9	Upright Security	Kontich	11-50	21	13
10	Resilient Security	n/a	11-50	20	14
11	Thales Cyber Solutions Belgium	n/a	11-50	20	1
12	Actwise	Kontich	11-50	18	10
13	Redsystem	Froyennes	11-50	18	7
14	Pretera	Brussels	11-50	18	6
15	Shield VZW	n/a	11-50	17	10
16	Ataya And Partners - HTP Group	Ixelles	11-50	11	1
17	Soterics, Your End-To-End Partner In OT Security	Kontich	11-50	10	4
18	Curios	n/a	1-10	10	4
19	Brand Solutions Europe	Sint-Niklaas	1-10	8	4
20	4net	Mechelen	11-50	7	5
21	Cyberplan	Oostkamp	11-50	6	4
22	Defend-Ot	Kampenhout	1-10	6	4
23	Focal Point SRL	n/a	11-50	6	3
24	Atendo I Secure	Paal-Beringen	1-10	6	2
25	S.A.F.E	Aarschot	1-10	6	1

Showing 25 of 244 cybersecurity service providers based in Belgium

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Cybersecurity service providers based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 22 HQs

269Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

186

11-50

51-200

201-500

1,001-5,000

Cybersecurity service providers by metro

Metro	Companies
Cybersecurity service providers in Brussels	22
Cybersecurity service providers in Antwerp	11
Cybersecurity service providers in Kontich	10
Cybersecurity service providers in Antwerpen	6
Cybersecurity service providers in Mechelen	4
Cybersecurity service providers in Turnhout	4
Cybersecurity service providers in Sint-Niklaas	3

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 service providers”, 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; 5 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 service providers are there based in Belgium?

There are 244 cybersecurity service providers 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 service providers?

Brussels leads with 22 headquartered companies, followed by Antwerp (11) and Kontich (10).

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 2,547 verified decision-maker contacts tracked across these 244 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.