Company lists · Data verified August 2026

Top 19 Cybersecurity incident response based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 60 companies tracked

There are 60 cybersecurity incident response headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 374 professional contacts across them, including 129 with verified work emails and 12 with mobile numbers. Kontich is the largest hub.

This list covers cybersecurity incident response 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.

60Companies

374Contacts tracked

129Verified emails

12Mobile numbers

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The 19 largest cybersecurity incident response based in Belgium

Ranked by team size

Top 19 of 60 cybersecurity incident response 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	Sertalink	Belsele	11-50	27	13
3	Resilient Security	n/a	11-50	20	14
4	Thales Cyber Solutions Belgium	n/a	11-50	20	1
5	Actwise	Kontich	11-50	18	10
6	Redsystem	Froyennes	11-50	18	7
7	Splynter	Kontich	1-10	10	8
8	Curios	n/a	1-10	10	4
9	Brand Solutions Europe	Sint-Niklaas	1-10	8	4
10	Resilix	n/a	1-10	5	3
11	Apex Networks	Wingene	1-10	4	3
12	Dashan	Tournai	1-10	4	2
13	Infosec4you	Bruxelles Bruxelles	11-50	3	2
14	Cybervalue	Leuven	1-10	3	2
15	Qfirst	Bilzen	1-10	3	2
16	Threatproof	n/a	11-50	2	2
17	Odsc Sprl	Namur	1-10	2	1
18	Blue Canary	Bruges	1-10	1	1
19	Cybertronica	Kontich	1-10	1	1

Showing 19 of 60 cybersecurity incident response based in Belgium

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Cybersecurity incident response based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

KontichLargest hub · 3 HQs

12Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Cybersecurity incident response by metro

Metro	Companies
Cybersecurity incident response in Kontich	3
Cybersecurity incident response in Antwerp	3
Cybersecurity incident response in Brussels	3
Cybersecurity incident response in Sint-Niklaas	2
Cybersecurity incident response in Erpe-Mere	2
Cybersecurity incident response in Kortrijk	2
Cybersecurity incident response in Bruges	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 incident response”, 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 incident response are there based in Belgium?

There are 60 cybersecurity incident response 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 incident response?

Kontich leads with 3 headquartered companies, followed by Antwerp (3) and Brussels (3).

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 129 verified decision-maker contacts tracked across these 60 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.