Company lists · Data verified August 2026

Top 25 Cybersecurity firms based in South Africa

Name: Cybersecurity firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 370 companies tracked

There are 370 cybersecurity firms headquartered in South Africa (RevenueBase, August 2026). RevenueBase tracks 6,302 professional contacts across them, including 2,800 with verified work emails and 830 with mobile numbers. Johannesburg is the largest hub.

This list covers cybersecurity firms headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

370Companies

6,302Contacts tracked

2,800Verified emails

830Mobile numbers

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The 25 largest cybersecurity firms based in South Africa

Ranked by team size

Top 25 of 370 cybersecurity firms based in South Africa, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Mimecast	Cape Town South Africa	1,001-5,000	2,348	1,437
2	S-Rm	Cape Town	201-500	352	223
3	Cyber1 Solutions	Sandton	51-200	235	24
4	Maxtec	Sandton	51-200	206	37
5	Performanta	Cape Town	51-200	153	103
6	MWR Cybersec	Edenburg	51-200	123	33
7	SECON	Durban	11-50	122	27
8	Conosco	Natal	51-200	105	63
9	Redstor	Somerset West	51-200	81	28
10	Securicom	Cape Town	51-200	78	29
11	Snode Technologies	Centurion	51-200	77	49
12	Aves Cyber Security	Johannesburg	51-200	64	35
13	Iguardsa	Johannesburg	51-200	46	28
14	The Kernel	Sandton	51-200	44	9
15	Armata Cyber Security	Johannesburg	51-200	39	25
16	Qwerti	Durban	51-200	36	21
17	Cyberantix	Midrand	11-50	36	17
18	Dotcom Cybersecurity	Centurion	11-50	30	17
19	Cyberlinx Security	Johannesburg	11-50	29	22
20	Iconis	Cape Town	51-200	26	17
21	Isolv Technologies PTY LTD	Rosebank	11-50	25	10
22	MRB Secure PTY LTD RF	Fourways	11-50	20	13
23	Neworder	City Of Tshwane	11-50	20	11
24	Maidar Secure	Bryanston	51-200	20	5
25	Cloud Group	Cape Town	11-50	20	2

Showing 25 of 370 cybersecurity firms based in South Africa

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Cybersecurity firms based in South Africa at a glance

As of Aug 28, 2026

1-10Median size (employees)

JohannesburgLargest hub · 89 HQs

830Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

194

11-50

122

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity firms by metro

Metro	Companies
Cybersecurity firms in Johannesburg	89
Cybersecurity firms in Cape Town	62
Cybersecurity firms in Pretoria	32
Cybersecurity firms in Sandton	20
Cybersecurity firms in Centurion	14
Cybersecurity firms in City Of Tshwane	14
Cybersecurity firms in Midrand	12
Cybersecurity firms in Durban	12

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity firms”, with match quality audited by blind human judging, and headquartered in South Africa.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity firms are there based in South Africa?

There are 370 cybersecurity firms headquartered in South Africa as of August 2026 (RevenueBase).

What is the largest company on this list?

Mimecast, headquartered in Cape Town South Africa, tops this list with the largest team on record.

Which city has the most cybersecurity firms?

Johannesburg leads with 89 headquartered companies, followed by Cape Town (62) and Pretoria (32).

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 2,800 verified decision-maker contacts tracked across these 370 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.