Company lists · Data refreshed September 2026
Top 25 Penetration testing service providers based in Belgium
RevenueBase identified 104 company matches for penetration testing service providers associated with Belgium as of September 2026 and tracks 1,066 professional contacts across them, including 522 with verified work emails. Brussels is the largest hub.
This list covers company matches for penetration testing service providers associated with Belgium, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 penetration testing service providers based in Belgium
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 315 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 154 contacts → | ||||
Exact match “From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 88 contacts → | ||||
Exact match “Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 28 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 21 contacts → | ||||
Exact match “The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 20 contacts → | ||||
Exact match “At Thales Cyber Solutions Belgium, we strive for security & privacy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 19 contacts → | ||||
Exact match “Cresco is your partner in cybersecurity.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match “Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 18 contacts → | ||||
Exact match “ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 18 contacts → | ||||
Exact match “Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “At Splynter we want to help companies understand their adversaries and how to combat them.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Wij geloven dat cybersecurity niet zo complex hoeft te zijn.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 5 contacts → | ||||
Exact match “At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 5 contacts → | ||||
Exact match “Most companies discover a security gap only after a breach.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “Guardis helps organizations design, secure and operate their IT infrastructure, from cloud-native environments to industrial systems.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 4 contacts → | ||||
Exact match “Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match “Experten in IT en OT Cyberveiligheid - Cybersecurity diensten op maat van uw organisatie- Security doorlichtingen, audits, pen-tests - NIS2, Cyfun en ISO27001 begeleidingen -…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 3 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Claireity Consulting: Cybersecurity Reimagined At Claireity Consulting, we blend the art of security with the precision of technology to safeguard your digital journey.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Mission: ZeroBit wants to offer an 'end-to-end' security for all types of companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “We provide cybersecurity services and solutions for our customers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “penetration testing service providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 104 penetration testing service providers based in Belgium
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Penetration testing service providers based in Belgium at a glance
As of Sep 20, 2026Companies by employee count
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 104 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- 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
- Company records associated with Belgium whose business descriptions match “penetration testing service providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 522 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “penetration testing service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many penetration testing service providers are there based in Belgium?
RevenueBase identified 104 company matches for penetration testing service providers associated with Belgium as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Nviso Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most penetration testing service providers?
Brussels leads with 10 company records, followed by Antwerp (7) and Kontich (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 522 professional contacts with verified work emails tracked across these 104 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 104 penetration testing service providers based in Belgium. Start with a free account, no credit card.
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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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Company intelligence · public preview
Top 25 penetration testing service providers based in Belgium
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 104 matching company records for penetration testing service providers based in Belgium, with 1,066 tracked contacts and 522 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 penetration testing service providers based in Belgium
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Nviso Securitynviso.euHQ: Brussels, BelgiumReported employees: 201-500 | Brussels, Belgium | 201-500 | Exact match | 315 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Aikido Securityaikido.devHQ: Ghent, BelgiumReported employees: 201-500 | Ghent, Belgium | 201-500 | Exact match | 154 contacts → |
“From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Approach Cyberapproach-cyber.comHQ: Mont-saint-guibert, BelgiumReported employees: 51-200 | Mont-saint-guibert, Belgium | 51-200 | Exact match | 88 contacts → |
“Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Secwisesecwise.beHQ: Leuven, BelgiumReported employees: 11-50 | Leuven, Belgium | 11-50 | Exact match | 28 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  The Security Factorythesecurityfactory.beHQ: Niel, BelgiumReported employees: 11-50 | Niel, Belgium | 11-50 | Exact match | 21 contacts → |
“The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Thales Cyber Solutions Belgiumexcellium-services.com HQ: BelgiumReported employees: 11-50 | Belgium | 11-50 | Exact match | 20 contacts → |
“At Thales Cyber Solutions Belgium, we strive for security & privacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cresco Cybersecuritycresco.beHQ: Belgium France Luxembourg Netherlands, BelgiumReported employees: 11-50 | Belgium France Luxembourg Netherlands, Belgium | 11-50 | Exact match | 19 contacts → |
“Cresco is your partner in cybersecurity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Resilient Securityresilientsecurity.beHQ: Antwerp, BelgiumReported employees: 11-50 | Antwerp, Belgium | 11-50 | Exact match | 18 contacts → |
“Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Actwise, An Acen Companyactwise.euHQ: Kontich, BelgiumReported employees: 11-50 | Kontich, Belgium | 11-50 | Exact match | 18 contacts → |
“ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Redsystemredsystem.ioHQ: Froyennes, BelgiumReported employees: 11-50 | Froyennes, Belgium | 11-50 | Exact match | 18 contacts → |
“Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  MCGmcg.beHQ: Ottignies-louvain-la-neuve, BelgiumReported employees: 1-10 | Ottignies-louvain-la-neuve, Belgium | 1-10 | Exact match | 16 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Curioscurios-it.euHQ: Antwerp, BelgiumReported employees: 1-10 | Antwerp, Belgium | 1-10 | Exact match | 10 contacts → |
“Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Splyntersplynter.beHQ: Kontich, BelgiumReported employees: 1-10 | Kontich, Belgium | 1-10 | Exact match | 8 contacts → |
“At Splynter we want to help companies understand their adversaries and how to combat them.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Brand Solutions Europebrand-solutions.beHQ: Sint-niklaas, BelgiumReported employees: 1-10 | Sint-niklaas, Belgium | 1-10 | Exact match | 8 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Cyberplancyberplan.beHQ: Oostkamp, BelgiumReported employees: 11-50 | Oostkamp, Belgium | 11-50 | Exact match | 6 contacts → |
“Wij geloven dat cybersecurity niet zo complex hoeft te zijn.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Resilixresilix.beHQ: Hasselt, BelgiumReported employees: 1-10 | Hasselt, Belgium | 1-10 | Exact match | 5 contacts → |
“At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Sectricity Outsmart Hackerssectricity.comHQ: Belgium Netherlands United Kingdom, BelgiumReported employees: 1-10 | Belgium Netherlands United Kingdom, Belgium | 1-10 | Exact match | 5 contacts → |
“Most companies discover a security gap only after a breach.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Guardisguardis.comHQ: Hannut, BelgiumReported employees: 1-10 | Hannut, Belgium | 1-10 | Exact match | 5 contacts → |
“Guardis helps organizations design, secure and operate their IT infrastructure, from cloud-native environments to industrial systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Apex Networksapex-networks.beHQ: Wingene, BelgiumReported employees: 1-10 | Wingene, Belgium | 1-10 | Exact match | 4 contacts → |
“Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Soteriasoteria.beHQ: Ghent, BelgiumReported employees: 1-10 | Ghent, Belgium | 1-10 | Exact match | 4 contacts → |
“Experten in IT en OT Cyberveiligheid - Cybersecurity diensten op maat van uw organisatie- Security doorlichtingen, audits, pen-tests - NIS2, Cyfun en ISO27001 begeleidingen -…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Cybervaluecybervalue.netHQ: Leuven, BelgiumReported employees: 1-10 | Leuven, Belgium | 1-10 | Exact match | 3 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Qfirstqfirst.beHQ: Bilzen, BelgiumReported employees: 1-10 | Bilzen, Belgium | 1-10 | Exact match | 3 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Claireity Consultingclaireity.ioHQ: Brussels, BelgiumReported employees: 1-10 | Brussels, Belgium | 1-10 | Exact match | 3 contacts → |
“Claireity Consulting: Cybersecurity Reimagined At Claireity Consulting, we blend the art of security with the precision of technology to safeguard your digital journey.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Zerobit BVzerobit.beHQ: Lubbeek, BelgiumReported employees: 1-10 | Lubbeek, Belgium | 1-10 | Exact match | 2 contacts → |
“Mission: ZeroBit wants to offer an 'end-to-end' security for all types of companies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ironpeakironpeak.beHQ: Berg, BelgiumReported employees: 1-10 | Berg, Belgium | 1-10 | Exact match | 2 contacts → |
“We provide cybersecurity services and solutions for our customers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 104 company matches
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Penetration testing service providers: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
104 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 104 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for penetration testing service providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many penetration testing service providers did RevenueBase find based in Belgium?
The saved snapshot records 104 matching company records, 1,066 tracked contacts and 522 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Penetration testing service providers by geography
- Penetration testing service providers based in Brisbane, Australia
- Penetration testing service providers based in Melbourne, Australia
- Penetration testing service providers based in Sydney, Australia
- Penetration testing service providers based in Calgary, Canada
- Penetration testing service providers based in Montreal, Canada
- Penetration testing service providers based in Ottawa, Canada
- Penetration testing service providers based in Toronto, Canada
- Penetration testing service providers based in Ahmedabad, India
- Penetration testing service providers based in Bangalore, India
- Penetration testing service providers based in Chennai, India
- Penetration testing service providers based in Gurgaon, India
- Penetration testing service providers based in Hyderabad, India
Cite this list
RevenueBase Data Team. Top 25 penetration testing service providers based in Belgium. Snapshot: September 20, 2026. https://revenuebase.ai/companies/penetration-testing-service-providers/belgium.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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Company intelligence · public preview
Top 25 penetration testing service providers based in Belgium
RevenueBase records 104 matching company records for penetration testing service providers based in Belgium, with 1,066 tracked contacts and 522 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 penetration testing service providers based in Belgium
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Nviso Securitynviso.eu HQ: Brussels, BelgiumReported employees: 201-500 | Brussels, Belgium | 201-500 | Exact match | 315 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Aikido Securityaikido.dev HQ: Ghent, BelgiumReported employees: 201-500 | Ghent, Belgium | 201-500 | Exact match | 154 contacts → |
“From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Approach Cyberapproach-cyber.com HQ: Mont-saint-guibert, BelgiumReported employees: 51-200 | Mont-saint-guibert, Belgium | 51-200 | Exact match | 88 contacts → |
“Approach Cyber is a trusted cyber resilience partner supporting organizations across Belgium and Switzerland.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Secwisesecwise.be HQ: Leuven, BelgiumReported employees: 11-50 | Leuven, Belgium | 11-50 | Exact match | 28 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | The Security Factorythesecurityfactory.be HQ: Niel, BelgiumReported employees: 11-50 | Niel, Belgium | 11-50 | Exact match | 21 contacts → |
“The main goal of the Security Factory is to test/assess the current security maturity level of clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Thales Cyber Solutions Belgiumexcellium-services.com HQ: BelgiumReported employees: 11-50 | Belgium | 11-50 | Exact match | 20 contacts → |
“At Thales Cyber Solutions Belgium, we strive for security & privacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cresco Cybersecuritycresco.be HQ: Belgium France Luxembourg Netherlands, BelgiumReported employees: 11-50 | Belgium France Luxembourg Netherlands, Belgium | 11-50 | Exact match | 19 contacts → |
“Cresco is your partner in cybersecurity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Resilient Securityresilientsecurity.be HQ: Antwerp, BelgiumReported employees: 11-50 | Antwerp, Belgium | 11-50 | Exact match | 18 contacts → |
“Resilient Security is your trusted partner in cybersecurity, bridging the gap between big consultancy firms and system integrators.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Actwise, An Acen Companyactwise.eu HQ: Kontich, BelgiumReported employees: 11-50 | Kontich, Belgium | 11-50 | Exact match | 18 contacts → |
“ActWise is the partner of choice for securing your identities and protecting what matters most within your company.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Redsystemredsystem.io HQ: Froyennes, BelgiumReported employees: 11-50 | Froyennes, Belgium | 11-50 | Exact match | 18 contacts → |
“Our mission is to advise and support you in minimizing the attack surface that could threaten your business.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MCGmcg.be HQ: Ottignies-louvain-la-neuve, BelgiumReported employees: 1-10 | Ottignies-louvain-la-neuve, Belgium | 1-10 | Exact match | 16 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Curioscurios-it.eu HQ: Antwerp, BelgiumReported employees: 1-10 | Antwerp, Belgium | 1-10 | Exact match | 10 contacts → |
“Curios is a boutique cybersecurity and compliance consultancy in Antwerp, serving enterprises across Belgium and Europe.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Splyntersplynter.be HQ: Kontich, BelgiumReported employees: 1-10 | Kontich, Belgium | 1-10 | Exact match | 8 contacts → |
“At Splynter we want to help companies understand their adversaries and how to combat them.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Brand Solutions Europebrand-solutions.be HQ: Sint-niklaas, BelgiumReported employees: 1-10 | Sint-niklaas, Belgium | 1-10 | Exact match | 8 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Cyberplancyberplan.be HQ: Oostkamp, BelgiumReported employees: 11-50 | Oostkamp, Belgium | 11-50 | Exact match | 6 contacts → |
“Wij geloven dat cybersecurity niet zo complex hoeft te zijn.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Resilixresilix.be HQ: Hasselt, BelgiumReported employees: 1-10 | Hasselt, Belgium | 1-10 | Exact match | 5 contacts → |
“At Resilix, we focus on providing targeted security solutions designed from a pragmatic approach to best protect your organisation from today's complex threats.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Sectricity Outsmart Hackerssectricity.com HQ: Belgium Netherlands United Kingdom, BelgiumReported employees: 1-10 | Belgium Netherlands United Kingdom, Belgium | 1-10 | Exact match | 5 contacts → |
“Most companies discover a security gap only after a breach.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Guardisguardis.com HQ: Hannut, BelgiumReported employees: 1-10 | Hannut, Belgium | 1-10 | Exact match | 5 contacts → |
“Guardis helps organizations design, secure and operate their IT infrastructure, from cloud-native environments to industrial systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Apex Networksapex-networks.be HQ: Wingene, BelgiumReported employees: 1-10 | Wingene, Belgium | 1-10 | Exact match | 4 contacts → |
“Een goed werkend netwerk is voor elk bedrijf van cruciaal belang.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Soteriasoteria.be HQ: Ghent, BelgiumReported employees: 1-10 | Ghent, Belgium | 1-10 | Exact match | 4 contacts → |
“Experten in IT en OT Cyberveiligheid - Cybersecurity diensten op maat van uw organisatie- Security doorlichtingen, audits, pen-tests - NIS2, Cyfun en ISO27001 begeleidingen -…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cybervaluecybervalue.net HQ: Leuven, BelgiumReported employees: 1-10 | Leuven, Belgium | 1-10 | Exact match | 3 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Qfirstqfirst.be HQ: Bilzen, BelgiumReported employees: 1-10 | Bilzen, Belgium | 1-10 | Exact match | 3 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Claireity Consultingclaireity.io HQ: Brussels, BelgiumReported employees: 1-10 | Brussels, Belgium | 1-10 | Exact match | 3 contacts → |
“Claireity Consulting: Cybersecurity Reimagined At Claireity Consulting, we blend the art of security with the precision of technology to safeguard your digital journey.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Zerobit BVzerobit.be HQ: Lubbeek, BelgiumReported employees: 1-10 | Lubbeek, Belgium | 1-10 | Exact match | 2 contacts → |
“Mission: ZeroBit wants to offer an 'end-to-end' security for all types of companies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ironpeakironpeak.be HQ: Berg, BelgiumReported employees: 1-10 | Berg, Belgium | 1-10 | Exact match | 2 contacts → |
“We provide cybersecurity services and solutions for our customers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 104 company matches
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Penetration testing service providers: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
104 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 104 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for penetration testing service providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many penetration testing service providers did RevenueBase find based in Belgium?
The saved snapshot records 104 matching company records, 1,066 tracked contacts and 522 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 penetration testing service providers based in Belgium. Snapshot: September 20, 2026. https://revenuebase.ai/companies/penetration-testing-service-providers/belgium.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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