Company lists · Data refreshed September 2026
Top 25 Operational technology security companies based in Belgium
RevenueBase identified 60 company matches for operational technology security companies associated with Belgium as of September 2026 and tracks 800 professional contacts across them, including 393 with verified work emails. Antwerp is the largest hub.
This list covers company matches for operational technology security companies 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 14, 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 operational technology security companies 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 14, 2026 · View company records in RevenueBase | |||||
| 2 | 102 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 14, 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 14, 2026 · View company records in RevenueBase | |||||
| 4 | 28 contacts → | ||||
Exact match “Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “At Thales Cyber Solutions Belgium, we strive for security & privacy.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 6 | 19 contacts → | ||||
Exact match “Cresco is your partner in cybersecurity.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 7 | 16 contacts → | ||||
Exact match “At SANDT, we pride ourselves on being at the forefront of IT/OT convergence by combining teams of strategic and technological consultants, offering a unique blend of services that…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 8 | 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 14, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “EASI Network : Société de services et de conseils active dans les réseaux informatiques, IoT et télécoms à destination des entreprises et des institutions.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “Soterics is more than a service provider.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 11 | 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 14, 2026 · View company records in RevenueBase | |||||
| 12 | 8 contacts → | ||||
Exact match “Boolean BV is een toonaangevend softwarebedrijf dat de brug slaat tussen IT en OT.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 13 | 6 contacts → | ||||
Exact match “Protecting What Keeps the World Running At Defend-OT, we specialize in cybersecurity for Operational Technology (OT) and forming the bridge between IT, helping organizations…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 14 | 5 contacts → | ||||
Exact match “At, we understand the unique challenges of securing Operational Technology environments.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 15 | 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 14, 2026 · View company records in RevenueBase | |||||
| 16 | 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 14, 2026 · View company records in RevenueBase | |||||
| 17 | 3 contacts → | ||||
Exact match “INFOSEC4YOU est une Start-up spécialisée exclusivement dans la cybersécurité, nous protégeons les données, les entreprises et les citoyens contre la cybercriminalité et les…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 18 | 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 14, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “Together, we can build a more secure and resilient digital world.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “KemSec provides a comprehensive portfolio of integrated cyber security solutions providing unified enterprise wide protection for operators of industrial environments.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “Chez ODSC, nous accompagnons les entreprises dans la sécurisation de leurs actifs numériques à travers une approche complète et humaine de la cybersécurité.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “In Belgium, there are an estimated industrial manufacturing companies.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “We aim to improve the overall security posture and security practices of our clients.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “We offer consultancy services for companies that use IT and OT systems or integrate OT systems and want to test their approach to cybersecurity against the best practices from…” Recorded in the RevenueBase company graph · Sep 14, 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 “operational technology security companies”. 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 60 operational technology security companies based in Belgium
See the full list, filter by size, metro and specialty, and access 393 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Operational technology security companies based in Belgium at a glance
As of Sep 14, 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 60 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 “operational technology security companies” 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 393 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 14, 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 “operational technology security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many operational technology security companies are there based in Belgium?
RevenueBase identified 60 company matches for operational technology security companies 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 operational technology security companies?
Antwerp leads with 5 company records, followed by Brussels (3) and Kontich (3).
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 393 professional contacts with verified work emails tracked across these 60 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 14, 2026.
Ready to reach these companies? Verified emails and direct dials for all 60 operational technology security companies based in Belgium. Start with a free account, no credit card.
Download this list →Related lists
Operational technology security companies by geography
- Operational technology security companies based in the United States
- Operational technology security companies based in the United Kingdom
- Operational technology security companies based in Brazil
- Operational technology security companies based in Canada
- Operational technology security companies based in France
- Operational technology security companies based in Australia
- Operational technology security companies based in Germany
- Operational technology security companies based in Italy
- Operational technology security companies based in Spain
- Operational technology security companies based in Mexico
- Operational technology security companies based in the Netherlands
- Operational technology security companies based in Israel
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Operational technology security companies based in the United States
- Operational technology security companies based in the United Kingdom
- Operational technology security companies based in Brazil
- Operational technology security companies based in Canada
- Operational technology security companies based in France
- Operational technology security companies based in Australia
Company intelligence · public preview
Top 25 operational technology security companies 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 60 matching company records for operational technology security companies based in Belgium, with 800 tracked contacts and 393 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 14, 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 operational technology security companies 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Secutecsecutec.comHQ: Aartselaar, BelgiumReported employees: 51-200 | Aartselaar, Belgium | 51-200 | Exact match | 102 contacts → |
“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…” Recorded description excerpt · September 14, 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sertalinksertalink.comHQ: St-niklaas, BelgiumReported employees: 11-50 | St-niklaas, Belgium | 11-50 | Exact match | 28 contacts → |
“Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  SANDTsandt.beHQ: Brussels, BelgiumReported employees: 11-50 | Brussels, Belgium | 11-50 | Exact match | 16 contacts → |
“At SANDT, we pride ourselves on being at the forefront of IT/OT convergence by combining teams of strategic and technological consultants, offering a unique blend of services that…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Easi Networkeasinetwork.be HQ: Vise, BelgiumReported employees: 1-10 | Vise, Belgium | 1-10 | Exact match | 11 contacts → |
“EASI Network : Société de services et de conseils active dans les réseaux informatiques, IoT et télécoms à destination des entreprises et des institutions.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Soterics, Your End-To-End Partner In OT Securitysoterics.comHQ: Kontich, BelgiumReported employees: 11-50 | Kontich, Belgium | 11-50 | Exact match | 10 contacts → |
“Soterics is more than a service provider.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Booleanbooleanbv.beHQ: Genk, BelgiumReported employees: 1-10 | Genk, Belgium | 1-10 | Exact match | 8 contacts → |
“Boolean BV is een toonaangevend softwarebedrijf dat de brug slaat tussen IT en OT.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Defend-Otdefend-ot.comHQ: Kampenhout, BelgiumReported employees: 1-10 | Kampenhout, Belgium | 1-10 | Exact match | 6 contacts → |
“Protecting What Keeps the World Running At Defend-OT, we specialize in cybersecurity for Operational Technology (OT) and forming the bridge between IT, helping organizations…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Aspidaaspida.beHQ: Bruges, BelgiumReported employees: 1-10 | Bruges, Belgium | 1-10 | Exact match | 5 contacts → |
“At, we understand the unique challenges of securing Operational Technology environments.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Infosec4youinfosec4you.com HQ: Bruxelles Bruxelles, BelgiumReported employees: 11-50 | Bruxelles Bruxelles, Belgium | 11-50 | Exact match | 3 contacts → |
“INFOSEC4YOU est une Start-up spécialisée exclusivement dans la cybersécurité, nous protégeons les données, les entreprises et les citoyens contre la cybercriminalité et les…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Syntorysyntory.comHQ: Rumst, BelgiumReported employees: 11-50 | Rumst, Belgium | 11-50 | Exact match | 2 contacts → |
“Together, we can build a more secure and resilient digital world.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Kemseckemsec.comHQ: Leuvensesteenweg, BelgiumReported employees: 1-10 | Leuvensesteenweg, Belgium | 1-10 | Exact match | 2 contacts → |
“KemSec provides a comprehensive portfolio of integrated cyber security solutions providing unified enterprise wide protection for operators of industrial environments.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Odsc Sprlodsc.beHQ: Namur, BelgiumReported employees: 1-10 | Namur, Belgium | 1-10 | Exact match | 2 contacts → |
“Chez ODSC, nous accompagnons les entreprises dans la sécurisation de leurs actifs numériques à travers une approche complète et humaine de la cybersécurité.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Blue Canarybluecanary.beHQ: Bruges, BelgiumReported employees: 1-10 | Bruges, Belgium | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 |  Otsecure BVotsecure.beHQ: Ekeren, BelgiumReported employees: 1-10 | Ekeren, Belgium | 1-10 | Exact match | 1 contacts → |
“In Belgium, there are an estimated industrial manufacturing companies.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Securenzasecurenza.beHQ: Genk, BelgiumReported employees: 1-10 | Genk, Belgium | 1-10 | Exact match | 1 contacts → |
“We aim to improve the overall security posture and security practices of our clients.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Walnut Tree Consultingwalnut-tree-consulting.comHQ: Kampenhout, BelgiumReported employees: 1-10 | Kampenhout, Belgium | 1-10 | Exact match | 1 contacts → |
“We offer consultancy services for companies that use IT and OT systems or integrate OT systems and want to test their approach to cybersecurity against the best practices from…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 60 company matches
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Operational technology security companies: dataset insights
September 14, 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
60 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 60 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 14, 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 operational technology security companies?
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 operational technology security companies did RevenueBase find based in Belgium?
The saved snapshot records 60 matching company records, 800 tracked contacts and 393 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 14, 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
Operational technology security companies by geography
- Operational technology security companies based in the United States
- Operational technology security companies based in the United Kingdom
- Operational technology security companies based in Brazil
- Operational technology security companies based in Canada
- Operational technology security companies based in France
- Operational technology security companies based in Australia
- Operational technology security companies based in Germany
- Operational technology security companies based in Italy
- Operational technology security companies based in Spain
- Operational technology security companies based in Mexico
- Operational technology security companies based in the Netherlands
- Operational technology security companies based in Israel
Cite this list
RevenueBase Data Team. Top 25 operational technology security companies based in Belgium. Snapshot: September 14, 2026. https://revenuebase.ai/companies/operational-technology-security-companies/belgium.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Operational technology security companies based in the United States
- Operational technology security companies based in the United Kingdom
- Operational technology security companies based in Brazil
- Operational technology security companies based in Canada
- Operational technology security companies based in France
- Operational technology security companies based in Australia
Company intelligence · public preview
Top 25 operational technology security companies based in Belgium
RevenueBase records 60 matching company records for operational technology security companies based in Belgium, with 800 tracked contacts and 393 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 14, 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 operational technology security companies 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Secutecsecutec.com HQ: Aartselaar, BelgiumReported employees: 51-200 | Aartselaar, Belgium | 51-200 | Exact match | 102 contacts → |
“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…” Recorded description excerpt · September 14, 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sertalinksertalink.com HQ: St-niklaas, BelgiumReported employees: 11-50 | St-niklaas, Belgium | 11-50 | Exact match | 28 contacts → |
“Sertalink is a premier cybersecurity expert in Belgium and Luxembourg, serving as your organization's vigilant guardian in the digital world.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | SANDTsandt.be HQ: Brussels, BelgiumReported employees: 11-50 | Brussels, Belgium | 11-50 | Exact match | 16 contacts → |
“At SANDT, we pride ourselves on being at the forefront of IT/OT convergence by combining teams of strategic and technological consultants, offering a unique blend of services that…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Easi Networkeasinetwork.be HQ: Vise, BelgiumReported employees: 1-10 | Vise, Belgium | 1-10 | Exact match | 11 contacts → |
“EASI Network : Société de services et de conseils active dans les réseaux informatiques, IoT et télécoms à destination des entreprises et des institutions.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Soterics, Your End-To-End Partner In OT Securitysoterics.com HQ: Kontich, BelgiumReported employees: 11-50 | Kontich, Belgium | 11-50 | Exact match | 10 contacts → |
“Soterics is more than a service provider.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Booleanbooleanbv.be HQ: Genk, BelgiumReported employees: 1-10 | Genk, Belgium | 1-10 | Exact match | 8 contacts → |
“Boolean BV is een toonaangevend softwarebedrijf dat de brug slaat tussen IT en OT.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Defend-Otdefend-ot.com HQ: Kampenhout, BelgiumReported employees: 1-10 | Kampenhout, Belgium | 1-10 | Exact match | 6 contacts → |
“Protecting What Keeps the World Running At Defend-OT, we specialize in cybersecurity for Operational Technology (OT) and forming the bridge between IT, helping organizations…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Aspidaaspida.be HQ: Bruges, BelgiumReported employees: 1-10 | Bruges, Belgium | 1-10 | Exact match | 5 contacts → |
“At, we understand the unique challenges of securing Operational Technology environments.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Infosec4youinfosec4you.com HQ: Bruxelles Bruxelles, BelgiumReported employees: 11-50 | Bruxelles Bruxelles, Belgium | 11-50 | Exact match | 3 contacts → |
“INFOSEC4YOU est une Start-up spécialisée exclusivement dans la cybersécurité, nous protégeons les données, les entreprises et les citoyens contre la cybercriminalité et les…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 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 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Syntorysyntory.com HQ: Rumst, BelgiumReported employees: 11-50 | Rumst, Belgium | 11-50 | Exact match | 2 contacts → |
“Together, we can build a more secure and resilient digital world.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Kemseckemsec.com HQ: Leuvensesteenweg, BelgiumReported employees: 1-10 | Leuvensesteenweg, Belgium | 1-10 | Exact match | 2 contacts → |
“KemSec provides a comprehensive portfolio of integrated cyber security solutions providing unified enterprise wide protection for operators of industrial environments.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Odsc Sprlodsc.be HQ: Namur, BelgiumReported employees: 1-10 | Namur, Belgium | 1-10 | Exact match | 2 contacts → |
“Chez ODSC, nous accompagnons les entreprises dans la sécurisation de leurs actifs numériques à travers une approche complète et humaine de la cybersécurité.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Blue Canarybluecanary.be HQ: Bruges, BelgiumReported employees: 1-10 | Bruges, Belgium | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Otsecure BVotsecure.be HQ: Ekeren, BelgiumReported employees: 1-10 | Ekeren, Belgium | 1-10 | Exact match | 1 contacts → |
“In Belgium, there are an estimated industrial manufacturing companies.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Securenzasecurenza.be HQ: Genk, BelgiumReported employees: 1-10 | Genk, Belgium | 1-10 | Exact match | 1 contacts → |
“We aim to improve the overall security posture and security practices of our clients.” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Walnut Tree Consultingwalnut-tree-consulting.com HQ: Kampenhout, BelgiumReported employees: 1-10 | Kampenhout, Belgium | 1-10 | Exact match | 1 contacts → |
“We offer consultancy services for companies that use IT and OT systems or integrate OT systems and want to test their approach to cybersecurity against the best practices from…” Recorded description excerpt · September 14, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Operational technology security companies: dataset insights
September 14, 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
60 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 60 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 14, 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 operational technology security companies?
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 operational technology security companies did RevenueBase find based in Belgium?
The saved snapshot records 60 matching company records, 800 tracked contacts and 393 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 14, 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 operational technology security companies based in Belgium. Snapshot: September 14, 2026. https://revenuebase.ai/companies/operational-technology-security-companies/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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