Company lists · Data refreshed September 2026

Top 25 Ot cybersecurity companies based in South Africa

Name: Ot cybersecurity companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 129 companies tracked

RevenueBase identified 129 ot cybersecurity companies headquartered in South Africa as of September 2026 and tracks 4,129 professional contacts across them, including 1,156 with verified work emails. Johannesburg is the largest hub.

This list covers ot cybersecurity companies headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

129Companies

4,129Contacts tracked

1,156Verified emails

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The 25 largest ot cybersecurity companies based in South Africa

Ranked by team size

Top 25 of 129 ot cybersecurity companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ot cybersecurity companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	EOH	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1,001-5,000	2,093 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
2	Securicom	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence “Securicom is a leading local IT security company offering an end-to-end range of cloud-based IT security services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Aves Cyber Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Source: RevenueBase Database · checked Sep 21, 2026
4	Eset Southern Africa	Partial evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	51-200	52 contacts →
	Partial evidence “At ESET Southern Africa, we specialise in advanced cybersecurity solutions designed to safeguard businesses and individuals against ever-evolving threats.” Source: RevenueBase Database · checked Sep 21, 2026
5	Dataproof Communications	Partial evidence	Sandton, South AfricaHQ checked Sep 21, 2026	n/a	47 contacts →
	Partial evidence “Dataproof Communications is a Cybersecurity Company incorporated in 2014 specialising in cybersecurity operations, incident management and response best practices and technologies.” Source: RevenueBase Database · checked Sep 21, 2026
6	Armata Cyber Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	40 contacts →
	Indirect evidence “Armata Cyber Security brings affordable, leading and differentiated AI-driven Cyber Security solutions and Managed Services to SMBs, mid sized businesses, and large enterprises.” Source: RevenueBase Database · checked Sep 21, 2026
7	Cyberantix	Partial evidence	Midrand, South AfricaHQ checked Sep 21, 2026	11-50	36 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
8	Integrity360 WAS Redshift Cyber Security	Indirect evidence	Bryanston, South AfricaHQ checked Sep 21, 2026	11-50	35 contacts →
	Indirect evidence “Redshift is a South African cyber security advisory company assisting our customers with assessing their cyber security posture, determining risk exposure and building robust…” Source: RevenueBase Database · checked Sep 21, 2026
9	Cyberlinx Security	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	29 contacts →
	Partial evidence “Cyberlinx Security is a B-BBEE Level 1 Cybersecurity company in South Africa.” Source: RevenueBase Database · checked Sep 21, 2026
10	Bitcrack Cyber Security	Indirect evidence	Sandton, South AfricaHQ checked Sep 21, 2026	11-50	23 contacts →
	Indirect evidence “Founded by highly experienced cyber security specialists in 2012.” Source: RevenueBase Database · checked Sep 21, 2026
11	Iconis	Indirect evidence	Durban, South AfricaHQ checked Sep 21, 2026	51-200	22 contacts →
	Indirect evidence “ICON Information Systems is an ISO9001 and ISO27001 certified end-to-end ICT Services Provider with 9 years of operational experience under its belt.” Source: RevenueBase Database · checked Sep 21, 2026
12	Take Note Group Of Companies	Indirect evidence	Sandton, South AfricaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Take Note IT is a highly specialized Boutique Information Technology (IT) Security solution provider.” Source: RevenueBase Database · checked Sep 21, 2026
13	MRB Secure PTY LTD RF	Indirect evidence	Fourways, South AfricaHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “Cyber threats are evolving, but securing your business doesn’t have to be complicated or expensive.” Source: RevenueBase Database · checked Sep 21, 2026
14	Neworder	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “At NEWORDER, we specialise in Tactical Cyber Security, because attackers don’t follow the rules.” Source: RevenueBase Database · checked Sep 21, 2026
15	Cyber83	Partial evidence	Pretoria, South AfricaHQ checked Sep 21, 2026	11-50	18 contacts →
	Partial evidence “At Cyber83, we are dedicated to delivering top-tier cybersecurity solutions that meet the complex needs of today's enterprises.” Source: RevenueBase Database · checked Sep 21, 2026
16	Clyrofor SA	Partial evidence	Midrand, South AfricaHQ checked Sep 21, 2026	11-50	17 contacts →
	Partial evidence “Clyrofor is a South African #Cybersecurity company that is founded on the principles of empowerment and innovation.” Source: RevenueBase Database · checked Sep 21, 2026
17	Reportstar Technologies	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “ReportStar Technologies is a leading provider of cyber security solutions to the corporate, government and educational markets.” Source: RevenueBase Database · checked Sep 21, 2026
18	Techex Digital Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “TechEx Digital Solutions is a leading cyber technology firm specialising in providing robust solutions to safeguard small, medium and large organisations from digital threats.” Source: RevenueBase Database · checked Sep 21, 2026
19	Silent Guardian PTY LTD	Partial evidence	Durban, South AfricaHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Silent Guardian is a cybersecurity firm based in Durban, South Africa.” Source: RevenueBase Database · checked Sep 21, 2026
20	Telspace Africa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Telspace Africa was established in 2002 by CEO Dino Covotsos, who is still Chairman of the Board.” Source: RevenueBase Database · checked Sep 21, 2026
21	Condyn Cybersecurity Solutions Provider	Partial evidence	Centurion, South AfricaHQ checked Sep 21, 2026	1-10	13 contacts →
	Partial evidence “Do you have a problem with cybersecurity, or maybe you have a concern about the risks on your infrastructure?” Source: RevenueBase Database · checked Sep 21, 2026
22	Icloudz	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “South African-based company that provides cybersecurity, artificial intelligence and cloud computing services.” Source: RevenueBase Database · checked Sep 21, 2026
23	Cyberstack	Indirect evidence	Mogale City, South AfricaHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Welcome to CyberStack, a next-generation professional services company dedicated to reducing our clients' cyber security expenditures while enhancing their business value.” Source: RevenueBase Database · checked Sep 21, 2026
24	Nclose	Indirect evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	51-200	6 contacts →
	Indirect evidence “Your Information Technology Security Partner.” Source: RevenueBase Database · checked Sep 21, 2026
25	Cyber Insight	Partial evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “Cyber Insight is a leading cybersecurity company specializing in Defensive Security Solutions.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: ot cybersecurity companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names ot cybersecurity companies.
Partial evidence: Its own public description names part of ot cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ot cybersecurity companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 129 ot cybersecurity companies based in South Africa

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Ot cybersecurity companies based in South Africa at a glance

As of Sep 21, 2026

28.0%Verified-email coverage

32.0Average contacts per company

1-10Median size (employees)

25.6%Largest-city concentration · Johannesburg

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 129 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among ot cybersecurity companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in South Africa whose own description of what they do matches “ot cybersecurity companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names ot cybersecurity companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among ot cybersecurity companies, and records with no verified work email. Companies headquartered outside South Africa are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,156 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Ot cybersecurity companies by metro

Ot cybersecurity companies in Johannesburg33

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names ot cybersecurity companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many ot cybersecurity companies are there based in South Africa?

RevenueBase identified 129 ot cybersecurity companies headquartered in South Africa as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

EOH, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most ot cybersecurity companies?

Johannesburg leads with 33 headquartered companies, followed by Cape Town (18) and Pretoria (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,156 verified decision-maker contacts tracked across these 129 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.