Company lists · Data verified August 2026

Top 25 Cybersecurity startups based in South Africa

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 260 companies tracked

There are 260 cybersecurity startups headquartered in South Africa (RevenueBase, August 2026). RevenueBase tracks 5,213 professional contacts across them, including 2,371 with verified work emails and 764 with mobile numbers. Johannesburg is the largest hub.

This list covers cybersecurity startups 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.

260Companies

5,213Contacts tracked

2,371Verified emails

764Mobile numbers

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The 25 largest cybersecurity startups based in South Africa

Ranked by team size

Top 25 of 260 cybersecurity startups 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	Cyber1 Solutions	Sandton	51-200	235	24
3	Maxtec	Sandton	51-200	206	37
4	Performanta	Cape Town	51-200	153	103
5	MWR Cybersec	Edenburg	51-200	123	33
6	SECON	Durban	11-50	122	27
7	Conosco	Natal	51-200	105	63
8	Redstor	Somerset West	51-200	81	28
9	Securicom	Cape Town	51-200	78	29
10	Snode Technologies	Centurion	51-200	77	49
11	Aves Cyber Security	Johannesburg	51-200	64	35
12	Armata Cyber Security	Johannesburg	51-200	39	25
13	Qwerti	Durban	51-200	36	21
14	Cyberantix	Midrand	11-50	36	17
15	Dotcom Cybersecurity	Centurion	11-50	30	17
16	Cyber Retaliator Solutions	Centurion	11-50	29	6
17	Scarybyte	Johannesburg	11-50	28	12
18	Iconis	Cape Town	51-200	26	17
19	MRB Secure PTY LTD RF	Fourways	11-50	20	13
20	Neworder	City Of Tshwane	11-50	20	11
21	Maidar Secure	Bryanston	51-200	20	5
22	Cloud Group	Cape Town	11-50	20	2
23	Cyber83	Pretoria	11-50	19	10
24	Cyberrey	Johannesburg	11-50	19	3
25	Silent Guardian PTY LTD	Pretoria	11-50	16	8

Showing 25 of 260 cybersecurity startups based in South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,371 reachable decision-makers.

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Cybersecurity startups based in South Africa at a glance

As of Aug 28, 2026

1-10Median size (employees)

JohannesburgLargest hub · 69 HQs

764Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

141

11-50

51-200

201-500

1,001-5,000

Cybersecurity startups by metro

Metro	Companies
Cybersecurity startups in Johannesburg	69
Cybersecurity startups in Cape Town	44
Cybersecurity startups in Pretoria	19
Cybersecurity startups in Sandton	16
Cybersecurity startups in Centurion	11
Cybersecurity startups in Midrand	10
Cybersecurity startups in Bryanston	10

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 startups”, 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; 2 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 startups are there based in South Africa?

There are 260 cybersecurity startups 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 startups?

Johannesburg leads with 69 headquartered companies, followed by Cape Town (44) and Pretoria (19).

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 2,371 verified decision-maker contacts tracked across these 260 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.