Company lists · Data refreshed August 2026

Top 25 Api security companies based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 64 companies tracked

RevenueBase identified 64 api security companies headquartered in Belgium as of August 2026 and tracks 356 professional contacts across them, including 150 with verified work emails and 11 with mobile numbers. Brussels is the largest hub.

This list covers api security companies 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

64Companies

356Contacts tracked

150Verified emails

11Mobile numbers

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The 25 largest api security companies based in Belgium

Ranked by team size

Top 25 of 64 api security companies based in Belgium, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to api security companies: 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	Xalient Benelux	Indirect evidence	Asse, Belgium	201-500	74 contacts →
	Indirect evidence “Xalient ondersteunt toonaangevende organisaties bij het beschermen van hun meest waardevolle middelen: hun medewerkers, applicaties en data.” Source: RevenueBase Database · checked Aug 31, 2026
2	Secwise	Partial evidence	Leuven, Belgium	11-50	29 contacts →
	Partial 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 Aug 31, 2026
3	Thales Cyber Solutions Belgium	Partial evidence	Belgium	11-50	20 contacts →
	Partial evidence “At Thales Cyber Solutions Belgium, we strive for security & privacy.” Source: RevenueBase Database · checked Aug 31, 2026
4	The Security Factory	Partial evidence	Niel, Belgium	11-50	19 contacts →
	Partial evidence “The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Source: RevenueBase Database · checked Aug 31, 2026
5	Actwise	Partial evidence	Kontich, Belgium	11-50	18 contacts →
	Partial evidence “ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Source: RevenueBase Database · checked Aug 31, 2026
6	Redsystem	Indirect evidence	Froyennes, Belgium	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 Aug 31, 2026
7	MCG	Indirect evidence	Ottignies-Louvain-La-Neuve, Belgium	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 Aug 31, 2026
8	Splynter	Indirect evidence	Kontich, Belgium	1-10	10 contacts →
	Indirect evidence “At Splynter we want to help companies understand their adversaries and how to combat them.” Source: RevenueBase Database · checked Aug 31, 2026
9	Curios	Indirect evidence	Belgium	1-10	10 contacts →
	Indirect evidence “Curiosity is a powerful force.” Source: RevenueBase Database · checked Aug 31, 2026
10	Sectricity Outsmart Hackers	Partial evidence	Belgium Netherlands, Belgium	1-10	5 contacts →
	Partial evidence “Most companies discover a security gap only after a breach.” Source: RevenueBase Database · checked Aug 31, 2026
11	Resilix	Partial evidence	Belgium	1-10	5 contacts →
	Partial evidence “At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.” Source: RevenueBase Database · checked Aug 31, 2026
12	Guardis	Indirect evidence	Hannut, Belgium	1-10	5 contacts →
	Indirect evidence “Guardis helps organizations design, secure and operate their IT infrastructure, from cloud-native environments to industrial systems.” Source: RevenueBase Database · checked Aug 31, 2026
13	Apex Networks	Indirect evidence	Wingene, Belgium	1-10	4 contacts →
	Indirect evidence “Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.” Source: RevenueBase Database · checked Aug 31, 2026
14	Icteryus	Partial evidence	Gentbrugge, Belgium	1-10	4 contacts →
	Partial evidence “To protect global enterprises from emerging cyber security threats by delivering reliable and transparent services around the clock.” Source: RevenueBase Database · checked Aug 31, 2026
15	Cybervalue	Partial evidence	Leuven, Belgium	1-10	3 contacts →
	Partial evidence “He who defends everything, defends nothing” - No IT Security team can monitor every application, network, system and information asset that a company has, no incident response…” Source: RevenueBase Database · checked Aug 31, 2026
16	Threatproof	Indirect evidence	Belgium	11-50	2 contacts →
	Indirect evidence “At Threatproof, our mission is to redefine cybersecurity for businesses of all sizes.” Source: RevenueBase Database · checked Aug 31, 2026
17	Odsc Sprl	Indirect evidence	Namur, Belgium	1-10	2 contacts →
	Indirect evidence “Chez ODSC, nous accompagnons les entreprises dans la sécurisation de leurs actifs numériques à travers une approche complète et humaine de la cybersécurité.” Source: RevenueBase Database · checked Aug 31, 2026
18	Layer 9 Networks	Partial evidence	Sint-Amandsberg, Belgium	1-10	2 contacts →
	Partial evidence “Layer 9 Networks aims to become a paramount network security partner that reflects premium value based on unsurpassed service, superior quality and the highest standards of…” Source: RevenueBase Database · checked Aug 31, 2026
19	Blue Canary	Indirect evidence	Bruges, Belgium	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026
20	Flowz-It Cyberprotection For Smes	Indirect evidence	Belgium	1-10	1 contacts →
	Indirect evidence “FlowZ-IT is your cybersecurity company assisting companies and public organizations in the Benelux.” Source: RevenueBase Database · checked Aug 31, 2026
21	Shift Left Security	Partial evidence	Leuven, Belgium	1-10	1 contacts →
	Partial evidence “Shift Left Security are true experts in application security.” Source: RevenueBase Database · checked Aug 31, 2026
22	Cyberinit	Partial evidence	Waremme, Belgium	1-10	1 contacts →
	Partial evidence “Cybersecurity specialization* At CyberInIT, we specialize in a full range of cybersecurity services, from in-depth security audits to the implementation of robust defense…” Source: RevenueBase Database · checked Aug 31, 2026
23	Securenza	Partial evidence	Genk, Belgium	1-10	1 contacts →
	Partial evidence “Securenza is a cyber security services company with the aim to improve the overall security posture and security practices of our clients.” Source: RevenueBase Database · checked Aug 31, 2026
24	Cybertronica	Indirect evidence	Kontich, Belgium	1-10	1 contacts →
	Indirect evidence “CyberTronica helps organizations secure their infrastructure.” Source: RevenueBase Database · checked Aug 31, 2026
25	Achillex BV	Partial evidence	Brussels, Belgium	1-10	1 contacts →
	Partial evidence “Our passion for security runs deep and wide.” Source: RevenueBase Database · checked Aug 31, 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: api security companies. 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 api security companies.
Partial evidence: Its own public description names part of api security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name api security companies. 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 64 api security companies based in Belgium

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Api security companies based in Belgium at a glance

As of Aug 31, 2026

42.1%Verified-email coverage

3.1%Mobile-number coverage

5.6Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · Brussels

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 api security companies, 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 “api security companies”. 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 api security companies), 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 api security companies, 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, 150 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 August 31, 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 api security companies, 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 api security companies are there based in Belgium?

RevenueBase identified 64 api security companies headquartered in Belgium as of August 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?

Xalient Benelux, headquartered in Asse, tops this list with the largest team on record.

Which city has the most api security companies?

Brussels leads with 4 headquartered companies, followed by Kontich (3) and Leuven (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 150 verified decision-maker contacts tracked across these 64 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.

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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.