Company lists · Data refreshed September 2026
Top 25 Intelligence and security services based in Belgium
RevenueBase identified 124 intelligence and security services headquartered in Belgium as of September 2026 and tracks 4,342 professional contacts across them, including 2,316 with verified work emails and 82 with mobile numbers. Brussels is the largest hub.
This list covers intelligence and security services 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest intelligence and security services based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 27 | ||||
“Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 25 | ||||
“Mastering your own security empowers you to create a safer world for everyone.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 20 | ||||
“Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | Thales Cyber Solutions BelgiumPartial evidence | 20 | |||
“At Thales Cyber Solutions Belgium, we strive for security & privacy.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 18 | ||||
“ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 18 | ||||
“Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 17 | ||||
“RST consultancy guides your company to the desired level of security.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 16 | ||||
“At IntPact, we help companies see ahead and act with confidence.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 | ||||
“Operating in 90+ countries • Intelligence & Investigations provided by 100+ field agents • Offices in 8 countries • Client property protected: 1mln square miles Centry Global…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 | ||||
“At Splynter we want to help companies understand their adversaries and how to combat them.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 10 | ||||
“Soterics is more than a service provider.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 10 | ||||
“Curiosity is a powerful force.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 9 | ||||
“In a world where everything is connected and people are online all the time, data and resources are distributed and mobile.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | Pitagone SA - NVIndirect evidence | 7 | |||
“PITAGONE est le leader européen de la gestion de la menace; principalement active dans les domaines de l’Aviation, des Ports, des Transports Publics, des Agences Fédérales, des…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 | ||||
“Highly skilled IT consultants with focus on network & security.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 | ||||
“We help you protect your people, data and operations by delivering integrated consultancy, expert training and engineered solutions that safeguard your organisation from modern…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 | ||||
“security analysis” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 | ||||
“Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | DashanIndirect evidence | 4 | |||
“Détecter, Analyser, Former.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | Infosec4youIndirect evidence | 3 | |||
“INFOSEC4YOU est une Start-up spécialisée exclusivement dans la cybersécurité, nous protégeons les données, les entreprises et les citoyens contre la cybercriminalité et les…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 | ||||
“Qfirst helps companies to protect their data through both technical solutions and by applying cyber security processes and frameworks to their processes and their IT…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 124 intelligence and security services based in Belgium
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Intelligence and security services based in Belgium at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 intelligence and security services, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Belgium whose own description of what they do matches “intelligence and security services”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among intelligence and security services, 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 an evidence 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, 2,316 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 4, 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
How many intelligence and security services are there based in Belgium?
RevenueBase identified 124 intelligence and security services 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?
Sertalink, headquartered in Belsele, tops this list with the largest team on record.
Which city has the most intelligence and security services?
Brussels leads with 16 headquartered companies, followed by Antwerp (7) and Kontich (5).
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 2,316 verified decision-maker contacts tracked across these 124 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 4, 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 SmartSearch, 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.
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