Company lists · Data refreshed September 2026
Top 25 Operational technology security firms based in South Africa
RevenueBase identified 67 company matches for operational technology security firms associated with South Africa as of September 2026 and tracks 3,661 professional contacts across them, including 972 with verified work emails. Johannesburg is the largest hub.
This list covers company matches for operational technology security firms associated with South Africa, 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 29, 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 firms based in South Africa
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,093 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 62 contacts → | ||||
Exact match “AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 47 contacts → | ||||
Exact match “Dataproof Communications is a Cybersecurity Company incorporated in 2014 specialising in cybersecurity operations, incident management and response best practices and technologies.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 36 contacts → | ||||
Exact match “CyberAntix Pty Ltd offers Premium CyberSecurity for your business using advanced Security Operations Centre (SOC) technology and process platform that is built using cutting-edge…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 21 contacts → | ||||
Exact match “Take Note IT is a highly specialized Boutique Information Technology (IT) Security solution provider.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 19 contacts → | ||||
Exact match “Cyber threats are evolving, but securing your business doesn’t have to be complicated or expensive.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 18 contacts → | ||||
Exact match “At Cyber83, we are dedicated to delivering top-tier cybersecurity solutions that meet the complex needs of today's enterprises.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 17 contacts → | ||||
Exact match “Clyrofor is a South African #Cybersecurity company that is founded on the principles of empowerment and innovation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “TechEx Digital Solutions is a leading cyber technology firm specialising in providing robust solutions to safeguard small, medium and large organisations from digital threats.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Silent Guardian is a cybersecurity firm based in Durban, South Africa.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “Telspace Africa was established in 2002 by CEO Dino Covotsos, who is still Chairman of the Board.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 13 contacts → | ||||
Exact match “Do you have a problem with cybersecurity, or maybe you have a concern about the risks on your infrastructure?” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “Welcome to CyberStack, a next-generation professional services company dedicated to reducing our clients' cyber security expenditures while enhancing their business value.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “At DigitalShield, we pride ourselves in delivering exceptional Managed Security Operations Centre (SOC) services backed by our extensive technical skills, advanced technologies…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Did you know 60% of businesses close within six months of a cyber attack?” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 3 contacts → | ||||
Exact match “MarkIT Solutions' approach to cybersecurity and IT management is grounded in established principles of risk management, IT governance, and operational resilience.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 3 contacts → | ||||
Exact match “Founded in 2008, we are committed to helping organizations identify and mitigate cyber threats, safeguard sensitive information, and maintain regulatory compliance.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “Technology is changing the world around us at a rapid pace and the capabilities of connected devices will continue to advance at break-neck speed.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “SafeNet Technologies, your premier cybersecurity ally.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Seraph Cyber Security is a South African company specializing in providing cyber security advice and protection to organizations through risk, vulnerability and gap assessments.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “In today’s rapidly evolving digital landscape, safeguarding your company’s assets and data is more crucial than ever.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “We help plant executives, CIOs, and CISOs reduce OT cyber risk and maintain production uptime,by bridging the divide between IT and OT teams.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “Protect your business from cyberthreats with Cerberus Cyber Secure.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “A South Africa's premier provider of IT and Cybersecurity Services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “We are a small and specialized team that offer Network and Cybersecurity services.” Recorded in the RevenueBase company graph · Sep 29, 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 firms”. 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 67 operational technology security firms based in South Africa
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Operational technology security firms based in South Africa at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 67 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 South Africa whose business descriptions match “operational technology security firms” 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 972 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 29, 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 firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many operational technology security firms are there based in South Africa?
RevenueBase identified 67 company matches for operational technology security firms associated with South Africa 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?
EOH 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 firms?
Johannesburg leads with 18 company records, followed by Cape Town (8) and Pretoria (6).
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 972 professional contacts with verified work emails tracked across these 67 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 67 operational technology security firms based in South Africa. Start with a free account, no credit card.
Download this list →Related lists
Operational technology security firms by geography
- Operational technology security firms based in Melbourne, Australia
- Operational technology security firms based in Sydney, Australia
- Operational technology security firms based in Toronto, Canada
- Operational technology security firms based in Paris, France
- Operational technology security firms based in Bangalore, India
- Operational technology security firms based in Hyderabad, India
- Operational technology security firms based in Mumbai, India
- Operational technology security firms based in New Delhi, India
- Operational technology security firms based in Pune, India
- Operational technology security firms based in Riyadh, Saudi Arabia
- Operational technology security firms based in Singapore, Singapore
- Operational technology security firms based in Madrid, Spain
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 firms based in Melbourne, Australia
- Operational technology security firms based in Sydney, Australia
- Operational technology security firms based in Toronto, Canada
- Operational technology security firms based in Paris, France
- Operational technology security firms based in Bangalore, India
- Operational technology security firms based in Hyderabad, India
Company intelligence · public preview
Top 25 operational technology security firms based in South Africa
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 67 matching company records for operational technology security firms based in South Africa, with 3,661 tracked contacts and 972 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 29, 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 firms based in South Africa
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 |  EOHioco.techHQ: Johannesburg, South AfricaReported employees: 1,001-5,000 | Johannesburg, South Africa | 1,001-5,000 | Exact match | 2,093 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 |  Aves Cyber Securityaves.co.zaHQ: Johannesburg, South AfricaReported employees: 51-200 | Johannesburg, South Africa | 51-200 | Exact match | 62 contacts → |
“AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Dataproof Communicationsdataproof.co.zaHQ: Sandton, South AfricaReported employees: Not recorded | Sandton, South Africa | Not recorded | Exact match | 47 contacts → |
“Dataproof Communications is a Cybersecurity Company incorporated in 2014 specialising in cybersecurity operations, incident management and response best practices and technologies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Cyberantixcyberantix.co.zaHQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 36 contacts → |
“CyberAntix Pty Ltd offers Premium CyberSecurity for your business using advanced Security Operations Centre (SOC) technology and process platform that is built using cutting-edge…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Take Note Group Of Companiestakenoteit.comHQ: Sandton, South AfricaReported employees: 11-50 | Sandton, South Africa | 11-50 | Exact match | 21 contacts → |
“Take Note IT is a highly specialized Boutique Information Technology (IT) Security solution provider.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  MRB Secure PTY LTD RFmrbsecure.bizHQ: Fourways, South AfricaReported employees: 11-50 | Fourways, South Africa | 11-50 | Exact match | 19 contacts → |
“Cyber threats are evolving, but securing your business doesn’t have to be complicated or expensive.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cyber83cyber83.comHQ: Pretoria, South AfricaReported employees: 11-50 | Pretoria, South Africa | 11-50 | Exact match | 18 contacts → |
“At Cyber83, we are dedicated to delivering top-tier cybersecurity solutions that meet the complex needs of today's enterprises.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Clyrofor SAclyrofor.comHQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 17 contacts → |
“Clyrofor is a South African #Cybersecurity company that is founded on the principles of empowerment and innovation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Techex Digital Solutionstechexdigitals.comHQ: Johannesburg, South AfricaReported employees: 11-50 | Johannesburg, South Africa | 11-50 | Exact match | 15 contacts → |
“TechEx Digital Solutions is a leading cyber technology firm specialising in providing robust solutions to safeguard small, medium and large organisations from digital threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Silent Guardian PTY LTDsilentguardian.co.zaHQ: Durban, South AfricaReported employees: 11-50 | Durban, South Africa | 11-50 | Exact match | 15 contacts → |
“Silent Guardian is a cybersecurity firm based in Durban, South Africa.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Telspace Africatelspace.comHQ: Johannesburg, South AfricaReported employees: 11-50 | Johannesburg, South Africa | 11-50 | Exact match | 14 contacts → |
“Telspace Africa was established in 2002 by CEO Dino Covotsos, who is still Chairman of the Board.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Condyn Cybersecurity Solutions Providercondyn.comHQ: Centurion, South AfricaReported employees: 1-10 | Centurion, South Africa | 1-10 | Exact match | 13 contacts → |
“Do you have a problem with cybersecurity, or maybe you have a concern about the risks on your infrastructure?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cyberstackcyberstack.co.zaHQ: Mogale City, South AfricaReported employees: 11-50 | Mogale City, South Africa | 11-50 | Exact match | 8 contacts → |
“Welcome to CyberStack, a next-generation professional services company dedicated to reducing our clients' cyber security expenditures while enhancing their business value.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Digitalshielddigitalshield.co.zaHQ: Cape Town, South AfricaReported employees: 1-10 | Cape Town, South Africa | 1-10 | Exact match | 7 contacts → |
“At DigitalShield, we pride ourselves in delivering exceptional Managed Security Operations Centre (SOC) services backed by our extensive technical skills, advanced technologies…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Cyberspace Protection PTY LTDcyberspaceprotection.dayHQ: Durban, South AfricaReported employees: 1-10 | Durban, South Africa | 1-10 | Exact match | 6 contacts → |
“Did you know 60% of businesses close within six months of a cyber attack?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Markit Solutionsmarkitsolutions.co.zaHQ: Gillitts, South AfricaReported employees: 1-10 | Gillitts, South Africa | 1-10 | Exact match | 3 contacts → |
“MarkIT Solutions' approach to cybersecurity and IT management is grounded in established principles of risk management, IT governance, and operational resilience.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Purple Packet Securitypurplepacketsecurity.comHQ: Cape Town, South AfricaReported employees: 1-10 | Cape Town, South Africa | 1-10 | Exact match | 3 contacts → |
“Founded in 2008, we are committed to helping organizations identify and mitigate cyber threats, safeguard sensitive information, and maintain regulatory compliance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Soteria Solutionssoteriasolutions.co.zaHQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 3 contacts → |
“Technology is changing the world around us at a rapid pace and the capabilities of connected devices will continue to advance at break-neck speed.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Safenet Technologiessafenet.techHQ: Port Elizabeth, South AfricaReported employees: 11-50 | Port Elizabeth, South Africa | 11-50 | Exact match | 3 contacts → |
“SafeNet Technologies, your premier cybersecurity ally.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Seraph Cyber Securityseraphcs.co.zaHQ: Pinelands, South AfricaReported employees: 1-10 | Pinelands, South Africa | 1-10 | Exact match | 2 contacts → |
“Seraph Cyber Security is a South African company specializing in providing cyber security advice and protection to organizations through risk, vulnerability and gap assessments.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Fortress Cyber Solutionsfortresscyber.co.zaHQ: Centurion, South AfricaReported employees: 1-10 | Centurion, South Africa | 1-10 | Exact match | 2 contacts → |
“In today’s rapidly evolving digital landscape, safeguarding your company’s assets and data is more crucial than ever.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Octarityoctarity.comHQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 2 contacts → |
“We help plant executives, CIOs, and CISOs reduce OT cyber risk and maintain production uptime,by bridging the divide between IT and OT teams.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Cerberus Cyber Securecerberus-secure.co.zaHQ: Sandton, South AfricaReported employees: 51-200 | Sandton, South Africa | 51-200 | Exact match | 2 contacts → |
“Protect your business from cyberthreats with Cerberus Cyber Secure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mapho & SON Consultingmapho.co.zaHQ: Rustenburg, South AfricaReported employees: 1-10 | Rustenburg, South Africa | 1-10 | Exact match | 2 contacts → |
“A South Africa's premier provider of IT and Cybersecurity Services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Core Resiliencecoreres.co.zaHQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 2 contacts → |
“We are a small and specialized team that offer Network and Cybersecurity services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 67 company matches
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Operational technology security firms: dataset insights
September 29, 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
67 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 South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 67 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 29, 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 firms?
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 firms did RevenueBase find based in South Africa?
The saved snapshot records 67 matching company records, 3,661 tracked contacts and 972 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 29, 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 firms by geography
- Operational technology security firms based in Melbourne, Australia
- Operational technology security firms based in Sydney, Australia
- Operational technology security firms based in Toronto, Canada
- Operational technology security firms based in Paris, France
- Operational technology security firms based in Bangalore, India
- Operational technology security firms based in Hyderabad, India
- Operational technology security firms based in Mumbai, India
- Operational technology security firms based in New Delhi, India
- Operational technology security firms based in Pune, India
- Operational technology security firms based in Riyadh, Saudi Arabia
- Operational technology security firms based in Singapore, Singapore
- Operational technology security firms based in Madrid, Spain
Cite this list
RevenueBase Data Team. Top 25 operational technology security firms based in South Africa. Snapshot: September 29, 2026. https://revenuebase.ai/companies/operational-technology-security-firms/south-africa.
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 firms based in Melbourne, Australia
- Operational technology security firms based in Sydney, Australia
- Operational technology security firms based in Toronto, Canada
- Operational technology security firms based in Paris, France
- Operational technology security firms based in Bangalore, India
- Operational technology security firms based in Hyderabad, India
Company intelligence · public preview
Top 25 operational technology security firms based in South Africa
RevenueBase records 67 matching company records for operational technology security firms based in South Africa, with 3,661 tracked contacts and 972 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 29, 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 firms based in South Africa
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 | EOHioco.tech HQ: Johannesburg, South AfricaReported employees: 1,001-5,000 | Johannesburg, South Africa | 1,001-5,000 | Exact match | 2,093 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 | Aves Cyber Securityaves.co.za HQ: Johannesburg, South AfricaReported employees: 51-200 | Johannesburg, South Africa | 51-200 | Exact match | 62 contacts → |
“AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Dataproof Communicationsdataproof.co.za HQ: Sandton, South AfricaReported employees: Not recorded | Sandton, South Africa | Not recorded | Exact match | 47 contacts → |
“Dataproof Communications is a Cybersecurity Company incorporated in 2014 specialising in cybersecurity operations, incident management and response best practices and technologies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Cyberantixcyberantix.co.za HQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 36 contacts → |
“CyberAntix Pty Ltd offers Premium CyberSecurity for your business using advanced Security Operations Centre (SOC) technology and process platform that is built using cutting-edge…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Take Note Group Of Companiestakenoteit.com HQ: Sandton, South AfricaReported employees: 11-50 | Sandton, South Africa | 11-50 | Exact match | 21 contacts → |
“Take Note IT is a highly specialized Boutique Information Technology (IT) Security solution provider.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | MRB Secure PTY LTD RFmrbsecure.biz HQ: Fourways, South AfricaReported employees: 11-50 | Fourways, South Africa | 11-50 | Exact match | 19 contacts → |
“Cyber threats are evolving, but securing your business doesn’t have to be complicated or expensive.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cyber83cyber83.com HQ: Pretoria, South AfricaReported employees: 11-50 | Pretoria, South Africa | 11-50 | Exact match | 18 contacts → |
“At Cyber83, we are dedicated to delivering top-tier cybersecurity solutions that meet the complex needs of today's enterprises.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Clyrofor SAclyrofor.com HQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 17 contacts → |
“Clyrofor is a South African #Cybersecurity company that is founded on the principles of empowerment and innovation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Techex Digital Solutionstechexdigitals.com HQ: Johannesburg, South AfricaReported employees: 11-50 | Johannesburg, South Africa | 11-50 | Exact match | 15 contacts → |
“TechEx Digital Solutions is a leading cyber technology firm specialising in providing robust solutions to safeguard small, medium and large organisations from digital threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Silent Guardian PTY LTDsilentguardian.co.za HQ: Durban, South AfricaReported employees: 11-50 | Durban, South Africa | 11-50 | Exact match | 15 contacts → |
“Silent Guardian is a cybersecurity firm based in Durban, South Africa.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Telspace Africatelspace.com HQ: Johannesburg, South AfricaReported employees: 11-50 | Johannesburg, South Africa | 11-50 | Exact match | 14 contacts → |
“Telspace Africa was established in 2002 by CEO Dino Covotsos, who is still Chairman of the Board.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Condyn Cybersecurity Solutions Providercondyn.com HQ: Centurion, South AfricaReported employees: 1-10 | Centurion, South Africa | 1-10 | Exact match | 13 contacts → |
“Do you have a problem with cybersecurity, or maybe you have a concern about the risks on your infrastructure?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cyberstackcyberstack.co.za HQ: Mogale City, South AfricaReported employees: 11-50 | Mogale City, South Africa | 11-50 | Exact match | 8 contacts → |
“Welcome to CyberStack, a next-generation professional services company dedicated to reducing our clients' cyber security expenditures while enhancing their business value.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Digitalshielddigitalshield.co.za HQ: Cape Town, South AfricaReported employees: 1-10 | Cape Town, South Africa | 1-10 | Exact match | 7 contacts → |
“At DigitalShield, we pride ourselves in delivering exceptional Managed Security Operations Centre (SOC) services backed by our extensive technical skills, advanced technologies…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Cyberspace Protection PTY LTDcyberspaceprotection.day HQ: Durban, South AfricaReported employees: 1-10 | Durban, South Africa | 1-10 | Exact match | 6 contacts → |
“Did you know 60% of businesses close within six months of a cyber attack?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Markit Solutionsmarkitsolutions.co.za HQ: Gillitts, South AfricaReported employees: 1-10 | Gillitts, South Africa | 1-10 | Exact match | 3 contacts → |
“MarkIT Solutions' approach to cybersecurity and IT management is grounded in established principles of risk management, IT governance, and operational resilience.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Purple Packet Securitypurplepacketsecurity.com HQ: Cape Town, South AfricaReported employees: 1-10 | Cape Town, South Africa | 1-10 | Exact match | 3 contacts → |
“Founded in 2008, we are committed to helping organizations identify and mitigate cyber threats, safeguard sensitive information, and maintain regulatory compliance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Soteria Solutionssoteriasolutions.co.za HQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 3 contacts → |
“Technology is changing the world around us at a rapid pace and the capabilities of connected devices will continue to advance at break-neck speed.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Safenet Technologiessafenet.tech HQ: Port Elizabeth, South AfricaReported employees: 11-50 | Port Elizabeth, South Africa | 11-50 | Exact match | 3 contacts → |
“SafeNet Technologies, your premier cybersecurity ally.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Seraph Cyber Securityseraphcs.co.za HQ: Pinelands, South AfricaReported employees: 1-10 | Pinelands, South Africa | 1-10 | Exact match | 2 contacts → |
“Seraph Cyber Security is a South African company specializing in providing cyber security advice and protection to organizations through risk, vulnerability and gap assessments.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Fortress Cyber Solutionsfortresscyber.co.za HQ: Centurion, South AfricaReported employees: 1-10 | Centurion, South Africa | 1-10 | Exact match | 2 contacts → |
“In today’s rapidly evolving digital landscape, safeguarding your company’s assets and data is more crucial than ever.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Octarityoctarity.com HQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 2 contacts → |
“We help plant executives, CIOs, and CISOs reduce OT cyber risk and maintain production uptime,by bridging the divide between IT and OT teams.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Cerberus Cyber Securecerberus-secure.co.za HQ: Sandton, South AfricaReported employees: 51-200 | Sandton, South Africa | 51-200 | Exact match | 2 contacts → |
“Protect your business from cyberthreats with Cerberus Cyber Secure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mapho & SON Consultingmapho.co.za HQ: Rustenburg, South AfricaReported employees: 1-10 | Rustenburg, South Africa | 1-10 | Exact match | 2 contacts → |
“A South Africa's premier provider of IT and Cybersecurity Services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Core Resiliencecoreres.co.za HQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 2 contacts → |
“We are a small and specialized team that offer Network and Cybersecurity services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 67 company matches
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Operational technology security firms: dataset insights
September 29, 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
67 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 South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 67 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 29, 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 firms?
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 firms did RevenueBase find based in South Africa?
The saved snapshot records 67 matching company records, 3,661 tracked contacts and 972 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 29, 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 firms by geography
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- Operational technology security firms based in Paris, France
- Operational technology security firms based in Bangalore, India
- Operational technology security firms based in Hyderabad, India
- Operational technology security firms based in Mumbai, India
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- Operational technology security firms based in Pune, India
- Operational technology security firms based in Riyadh, Saudi Arabia
- Operational technology security firms based in Singapore, Singapore
- Operational technology security firms based in Madrid, Spain
Cite this list
RevenueBase Data Team. Top 25 operational technology security firms based in South Africa. Snapshot: September 29, 2026. https://revenuebase.ai/companies/operational-technology-security-firms/south-africa.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Operational technology security firms based in Melbourne, Australia
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