Company lists · Data verified August 2026

Top 25 Cybersecurity companies based in Sydney, Australia

Name: Cybersecurity companies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 210 companies tracked

Our directory lists 210 cybersecurity companies based in Sydney, Australia, with 1,824 professional contacts and 849 email addresses. The list was last updated in August 2026, and Sydney is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

210Companies

1,824Contacts tracked

849Verified emails

112Mobile numbers

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The 25 largest cybersecurity companies based in Sydney, Australia

Ranked by team size

Top 25 of 210 cybersecurity companies based in Sydney, Australia, 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	Virtual IT Group Vitg	Sydney	201-500	165	129
2	Infotrust	Sydney	201-500	122	81
3	Secutec	Sydney	51-200	102	37
4	Kaine Mathrick Tech	Sydney	51-200	91	62
5	Secure Agility	Sydney	51-200	87	76
6	Netmotion Software By Absolute	Sydney	501-1,000	78	35
7	Ctrl Cyber	Sydney	51-200	56	27
8	Seccom Global	Sydney	11-50	41	30
9	Guardware Australia	Sydney	11-50	41	1
10	Bare Cove Technology	Sydney	11-50	39	24
11	Plerion	Sydney	11-50	38	18
12	NUEVA	Sydney	51-200	30	15
13	CSO Group	Sydney	11-50	29	20
14	Fortian	Sydney	11-50	26	20
15	Hashlock	Sydney	11-50	25	13
16	Gridware	Sydney	11-50	25	10
17	Beyond Data	Sydney	11-50	25	8
18	Borderless CS	Sydney	11-50	25	5
19	Silentgrid Security	Sydney	11-50	22	12
20	Threat Intelligence	Sydney	11-50	19	1
21	Tanto Security	Sydney	11-50	18	10
22	NCC Group Apac	Sydney	1,001-5,000	18	8
23	Securoak	Sydney	11-50	18	3
24	Intrix Cyber Security	Sydney	11-50	16	6
25	Diesec	Sydney	51-200	15	9

Showing 25 of 210 cybersecurity companies based in Sydney, Australia

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Cybersecurity companies based in Sydney, Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 210 HQs

112Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

124

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity companies by metro in Australia

Metro	Companies
Cybersecurity companies in Sydney	210
Cybersecurity companies in Melbourne	192
Cybersecurity companies in Brisbane	92
Cybersecurity companies in Canberra	48
Cybersecurity companies in Perth	43
Cybersecurity companies in Adelaide	36
Cybersecurity companies in Brisbane City	14

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 companies”, with match quality audited by blind human judging, and headquartered in Sydney, Australia.
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 companies are in the directory?

The directory lists 210 cybersecurity companies based in Sydney, Australia.

Which city has the most cybersecurity companies?

Sydney is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 1,824 professional contacts and 849 email addresses for the listed cybersecurity companies.

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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.