Company lists · Data refreshed September 2026

Top 25 Critical infrastructure defense based in South Africa

Name: Critical infrastructure defense based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 424 companies tracked

RevenueBase identified 424 critical infrastructure defense headquartered in South Africa as of September 2026 and tracks 11,114 professional contacts across them, including 1,281 with verified work emails. Johannesburg is the largest hub.

This list covers critical infrastructure defense 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 16, 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 16, 2026 86% judged on-target in blind review

424Companies

11,114Contacts tracked

1,281Verified emails

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The 25 largest critical infrastructure defense based in South Africa

Ranked by team size

Top 25 of 424 critical infrastructure defense based in South Africa, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to critical infrastructure defense: 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	Bidvest Protea Coin	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 16, 2026	10001+	3,349 contacts →
	Indirect evidence “Bidvest Protea Coin is a leading provider of integrated, intelligence driven risk management services.” Source: RevenueBase Database · checked Sep 16, 2026
2	Imvula Quality Protection	Indirect evidence	Woodmead, South AfricaHQ checked Sep 16, 2026	10001+	1,340 contacts →
	Indirect evidence “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Source: RevenueBase Database · checked Sep 16, 2026
3	Thorburn Security Solutions PTY LTD	Indirect evidence	Rosebank, South AfricaHQ checked Sep 16, 2026	5,001-10,000	898 contacts →
	Indirect evidence “Thorburn Security Solutions is a national security service provider, offering customers truly integrated security solutions.” Source: RevenueBase Database · checked Sep 16, 2026
4	Enforce Security Services PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 16, 2026	5,001-10,000	432 contacts →
	Indirect evidence “Enforce Security is one of South Africa’s most trusted specialist in the provision of integrated risk management solutions.” Source: RevenueBase Database · checked Sep 16, 2026
5	Cyber1 Solutions	Indirect evidence	Sandton, South AfricaHQ checked Sep 16, 2026	51-200	228 contacts →
	Indirect evidence “CYBER1 Solutions is a Cyber Security specialist operating in Southern Africa, East & West Africa, Dubai and EMEA.” Source: RevenueBase Database · checked Sep 16, 2026
6	Xone Security	Indirect evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	501-1,000	225 contacts →
	Indirect evidence “Xone Security is a leading provider of risk, safety and security solutions to medium and large enterprises.” Source: RevenueBase Database · checked Sep 16, 2026
7	Securitas South Africa	Indirect evidence	Sandton, South AfricaHQ checked Sep 16, 2026	10001+	134 contacts →
	Indirect evidence “Securitas is the world’s leading intelligent protective services partner.” Source: RevenueBase Database · checked Sep 16, 2026
8	Online Intelligence PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 16, 2026	51-200	124 contacts →
	Indirect evidence “Online Intelligence strives to become the global leader and industry norm in Enterprise Risk Solutions, ultimately contributing towards safer communities and assurance.” Source: RevenueBase Database · checked Sep 16, 2026
9	CSG Security PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	1,001-5,000	124 contacts →
	Indirect evidence “CSG Security is a fully registered and licensed Security Solutions Provider that’s been in operation since the year CSG Security is well positioned to provide companies with risk…” Source: RevenueBase Database · checked Sep 16, 2026
10	IDS	Indirect evidence	New Germany, South AfricaHQ checked Sep 16, 2026	51-200	112 contacts →
	Indirect evidence “We live in an increasingly volatile, uncertain and chaotic world characterised by ambiguity and constant change.” Source: RevenueBase Database · checked Sep 16, 2026
11	Revert Risk Management Solutions PTY Limited	Indirect evidence	Rooihuiskraal, South AfricaHQ checked Sep 16, 2026	1,001-5,000	103 contacts →
	Indirect evidence “Investigation, Guarding, vehicle escorts, VIP Protection, Forensic Audits” Source: RevenueBase Database · checked Sep 16, 2026
12	Secutel Technologies PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	51-200	99 contacts →
	Indirect evidence “Secutel develop physical security technology focus on reducing risk for enterprises.” Source: RevenueBase Database · checked Sep 16, 2026
13	Afri Guard	Indirect evidence	Midvaal, South AfricaHQ checked Sep 16, 2026	1,001-5,000	78 contacts →
	Indirect evidence “Afri Guard has the experience of tailoring integrated security solutions to the specific needs of our diverse customer base.” Source: RevenueBase Database · checked Sep 16, 2026
14	EC Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	501-1,000	75 contacts →
	Indirect evidence “Established in 1997, EC Security is a trusted provider of high-quality, personalised security solutions.” Source: RevenueBase Database · checked Sep 16, 2026
15	Ithuba Protection Services	Indirect evidence	Noordwyk, South AfricaHQ checked Sep 16, 2026	201-500	65 contacts →
	Indirect evidence “Ithuba Protection Services is a leading provider of security solutions dedicated to safeguarding businesses and communities.” Source: RevenueBase Database · checked Sep 16, 2026
16	Cortac Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	501-1,000	63 contacts →
	Indirect evidence “CORTAC is a high-end risk management and integrated security solutions provider.” Source: RevenueBase Database · checked Sep 16, 2026
17	Aves Cyber Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 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 16, 2026
18	Vusela Risk Services PTY LTD	Indirect evidence	Centurion, South AfricaHQ checked Sep 16, 2026	501-1,000	62 contacts →
	Indirect evidence “Vusela Risk Services specializes in the provision of intelligence-driven risk management services to multinational companies, Government, Parastatals, financial institutions and…” Source: RevenueBase Database · checked Sep 16, 2026
19	Eset Southern Africa	Indirect evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	51-200	52 contacts →
	Indirect 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 16, 2026
20	Mantis Security PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	201-500	48 contacts →
	Indirect evidence “Industry leader in contract guarding and related services.” Source: RevenueBase Database · checked Sep 16, 2026
21	Dataproof Communications	Indirect evidence	Sandton, South AfricaHQ checked Sep 16, 2026	n/a	47 contacts →
	Indirect 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 16, 2026
22	Iguardsa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	51-200	45 contacts →
	Indirect evidence “iGuardSA is a 24x7 Managed Security Services Provider focused on protecting organisations where disruption is not an option.” Source: RevenueBase Database · checked Sep 16, 2026
23	Ceos Technologies PTY LTD	Indirect evidence	Northwold, South AfricaHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “Business Management Solutions, CCTV Security, Access control, Cyber security and Forensic Auditing, Electrical Audio Visual, Marketing and Commercial TV Solutions Business…” Source: RevenueBase Database · checked Sep 16, 2026
24	Icon Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect evidence “Established in 1994.” Source: RevenueBase Database · checked Sep 16, 2026
25	SDS Protection PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	501-1,000	34 contacts →
	Indirect evidence “SDS Protection (PTY) Ltd specializes in guarding, armed response, installation, and maintenance of high-quality security systems in South Africa.” Source: RevenueBase Database · checked Sep 16, 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: critical infrastructure defense. 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 critical infrastructure defense.
Partial evidence: Its own public description names part of critical infrastructure defense, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name critical infrastructure defense. 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 424 critical infrastructure defense based in South Africa

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Critical infrastructure defense based in South Africa at a glance

As of Sep 16, 2026

11.5%Verified-email coverage

26.2Average contacts per company

11-50Median size (employees)

21.5%Largest-city concentration · Johannesburg

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

162

11-50

134

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 424 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 critical infrastructure defense, 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 “critical infrastructure defense”. 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 critical infrastructure defense), 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 critical infrastructure defense, 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, 1,281 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 16, 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.

Critical infrastructure defense by metro

Critical infrastructure defense in Johannesburg91
Critical infrastructure defense in Cape Town45
Critical infrastructure defense in Pretoria27

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 critical infrastructure defense, 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 critical infrastructure defense are there based in South Africa?

RevenueBase identified 424 critical infrastructure defense 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?

Bidvest Protea Coin, headquartered in City Of Tshwane, tops this list with the largest team on record.

Which city has the most critical infrastructure defense?

Johannesburg leads with 91 headquartered companies, followed by Cape Town (45) and Pretoria (27).

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 1,281 verified decision-maker contacts tracked across these 424 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 16, 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.