Company lists · Data refreshed September 2026

Top 25 Cybersecurity agencies based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 208 companies tracked

RevenueBase identified 208 cybersecurity agencies headquartered in Belgium as of September 2026 and tracks 1,728 professional contacts across them, including 622 with verified work emails. Brussels is the largest hub.

This list covers cybersecurity agencies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

208Companies

1,728Contacts tracked

622Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cybersecurity agencies based in Belgium

Ranked by team size

Top 25 of 208 cybersecurity agencies based in Belgium, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Nviso Security	Indirect evidence	Brussels, BelgiumHQ checked Sep 21, 2026	201-500	315 contacts →
	Indirect evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 21, 2026
2	Secutec	Strong evidence	Aartselaar, BelgiumHQ checked Sep 21, 2026	51-200	102 contacts →
	Strong evidence “Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…” Source: RevenueBase Database · checked Sep 21, 2026
3	Approach Cyber	Indirect evidence	Mont-saint-guibert, BelgiumHQ checked Sep 21, 2026	51-200	88 contacts →
	Indirect evidence “Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Source: RevenueBase Database · checked Sep 21, 2026
4	ACEN	Strong evidence	Kontich, BelgiumHQ checked Sep 21, 2026	51-200	51 contacts →
	Strong evidence “Tailored, end-to-end solutions, suited to your cybersecurity needs.” Source: RevenueBase Database · checked Sep 21, 2026
5	Secwise	Indirect evidence	Leuven, BelgiumHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “As Belgium’s largest Microsoft Security team and #1 Microsoft Gold Security Partner of the BeLux, we provide you a solid end-to-end security strategy to protect your organization…” Source: RevenueBase Database · checked Sep 21, 2026
6	Sertalink	Strong evidence	St-niklaas, BelgiumHQ checked Sep 21, 2026	11-50	28 contacts →
	Strong evidence “Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Source: RevenueBase Database · checked Sep 21, 2026
7	Belgian Cyber Security Coalition	Indirect evidence	Brussels, BelgiumHQ checked Sep 21, 2026	1-10	27 contacts →
	Indirect evidence “The Cyber Security Coalition is a unique partnership between players from the academic world, the public authorities and the private sector to join forces in the fight against…” Source: RevenueBase Database · checked Sep 21, 2026
8	Upright Security	Strong evidence	Kontich, BelgiumHQ checked Sep 21, 2026	11-50	22 contacts →
	Strong evidence “As a strategic partner of Okta, SailPoint, Wiz, and Netskope, we deliver end-to-end cybersecurity across identity, cloud, and data.” Source: RevenueBase Database · checked Sep 21, 2026
9	Jimber	Strong evidence	Oostkamp, BelgiumHQ checked Sep 21, 2026	11-50	22 contacts →
	Strong evidence “Protecting companies of all sizes with user-friendly, innovative and affordable cybersecurity solutions.” Source: RevenueBase Database · checked Sep 21, 2026
10	Thales Cyber Solutions Belgium	Indirect evidence	BelgiumHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “At Thales Cyber Solutions Belgium, we strive for security & privacy.” Source: RevenueBase Database · checked Sep 21, 2026
11	Cresco Cybersecurity	Strong evidence	Belgium France Luxembourg Netherlands, BelgiumHQ checked Sep 21, 2026	11-50	19 contacts →
	Strong evidence “Cresco is your partner in cybersecurity.” Source: RevenueBase Database · checked Sep 21, 2026
12	Resilient Security	Strong evidence	Antwerp, BelgiumHQ checked Sep 21, 2026	11-50	18 contacts →
	Strong evidence “Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Source: RevenueBase Database · checked Sep 21, 2026
13	Actwise, An Acen Company	Indirect evidence	Kontich, BelgiumHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Source: RevenueBase Database · checked Sep 21, 2026
14	Redsystem	Indirect evidence	Froyennes, BelgiumHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Source: RevenueBase Database · checked Sep 21, 2026
15	Shield VZW	Strong evidence	Hasselt, BelgiumHQ checked Sep 21, 2026	11-50	17 contacts →
	Strong evidence “SHIELD aims to proactively respond to the digital cybersecurity challenges of today and tomorrow.” Source: RevenueBase Database · checked Sep 21, 2026
16	MCG	Indirect evidence	Ottignies-louvain-la-neuve, BelgiumHQ checked Sep 21, 2026	1-10	16 contacts →
	Indirect evidence “Notre collaboration vous permet de vous défendre face aux diverses cyberattaques complexes et structurées pour protéger vos actifs, hébergés en interne ou dans le Cloud, et ainsi…” Source: RevenueBase Database · checked Sep 21, 2026
17	Cert A Department Of The Centre For Cybersecurity Belgium	Strong evidence	Brussels, BelgiumHQ checked Sep 21, 2026	51-200	14 contacts →
	Strong evidence “CERT is part of the Centre for Cybersecurity Belgium.” Source: RevenueBase Database · checked Sep 21, 2026
18	Cronos Security	Strong evidence	Kontich, BelgiumHQ checked Sep 21, 2026	201-500	11 contacts →
	Strong evidence “We believe that together, we can safeguard the digital future, and that in the ever-evolving landscape of cybersecurity, alliances provide the strength, agility and skills needed…” Source: RevenueBase Database · checked Sep 21, 2026
19	Soterics, Your End-To-End Partner In OT Security	Indirect evidence	Kontich, BelgiumHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Soterics is more than a service provider.” Source: RevenueBase Database · checked Sep 21, 2026
20	Curios	Strong evidence	Antwerp, BelgiumHQ checked Sep 21, 2026	1-10	10 contacts →
	Strong evidence “Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.” Source: RevenueBase Database · checked Sep 21, 2026
21	Netcure	Indirect evidence	Zaventem, BelgiumHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “In a world where everything is connected and people are online all the time, data and resources are distributed and mobile.” Source: RevenueBase Database · checked Sep 21, 2026
22	Splynter	Indirect evidence	Kontich, BelgiumHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “At Splynter we want to help companies understand their adversaries and how to combat them.” Source: RevenueBase Database · checked Sep 21, 2026
23	Brand Solutions Europe	Strong evidence	Sint-niklaas, BelgiumHQ checked Sep 21, 2026	1-10	8 contacts →
	Strong evidence “Cybersecurity \| Algemene IT-diensten \| Digitale media Het digitale tijdperk heeft een enorme stroomversnelling gekend afgelopen jaren, dit is een trend die alleen nog maar zal…” Source: RevenueBase Database · checked Sep 21, 2026
24	ECTEG	Indirect evidence	Brussels, BelgiumHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “ECTEG is composed of European Union and European Economic Area Member States law enforcement agencies, international bodies, academia, private industry and experts.” Source: RevenueBase Database · checked Sep 21, 2026
25	4net	Indirect evidence	Mechelen, BelgiumHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “The philosophy underlying our approach is one of open-mindedness and flexibility, whereby we do not restrict ourselves to any particular vendor or product, but instead remain…” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity agencies.
Partial evidence: Its own public description names part of cybersecurity agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 208 cybersecurity agencies based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 622 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity agencies based in Belgium at a glance

As of Sep 21, 2026

36.0%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

11.1%Largest-city concentration · Brussels

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

150

11-50

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 208 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cybersecurity agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “cybersecurity agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cybersecurity agencies, and records with no verified work email. Companies headquartered outside Belgium are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 622 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cybersecurity agencies are there based in Belgium?

RevenueBase identified 208 cybersecurity agencies headquartered in Belgium as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Nviso Security, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most cybersecurity agencies?

Brussels leads with 23 headquartered companies, followed by Antwerp (9) and Kontich (8).

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 622 verified decision-maker contacts tracked across these 208 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 208 cybersecurity agencies based in Belgium. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity agencies by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.