Company lists · Data verified August 2026

Top 25 Cybersecurity consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,065 companies tracked

There are 1,065 cybersecurity consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 9,241 professional contacts across them, including 3,944 with verified work emails and 554 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity consulting firms headquartered in Australia, 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.

1,065Companies

9,241Contacts tracked

3,944Verified emails

554Mobile numbers

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The 25 largest cybersecurity consulting firms based in Australia

Ranked by team size

Top 25 of 1,065 cybersecurity consulting firms based in 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	PT Itsec Asia TBK	Melbourne	201-500	387	67
2	Centorrino Technologies	Coburg	201-500	349	207
3	Webroot	Chatswood	501-1,000	199	75
4	Triskele Labs	Melbourne	51-200	123	89
5	Optic Security Group	Broome	201-500	122	92
6	Renew IT	Canning Vale	51-200	113	55
7	Office Solutions IT	Mandurah	51-200	113	11
8	Secutec	Sydney	51-200	102	37
9	Sekuro	n/a	51-200	100	70
10	Ever Nimble	Fortitude Valley	51-200	98	79
11	Kaine Mathrick Tech	Sydney	51-200	91	62
12	Business Aspect	Perth	51-200	74	57
13	Northbridge Systems	St Leonards	51-200	70	27
14	Ampion	Melbourne	501-1,000	64	21
15	Entersoft Security	Brisbane	51-200	63	20
16	Skillfield	Melbourne	51-200	61	42
17	RED Piranha	Melbourne	51-200	58	41
18	Deploypartners	North Sydney	51-200	51	24
19	Security Consulting Group PTY LTD SCG	Brisbane City	51-200	50	35
20	Dimiya Tech	Melbourne	51-200	50	2
21	Emerging IT	Mulgrave	51-200	45	27
22	Firstwave ASX FCT	North Sydney	51-200	42	26
23	Bluerydge	Fyshwick	51-200	39	28
24	IPP Consulting PTY LTD	Canberra	51-200	37	24
25	Astralas	Cremorne	51-200	35	20

Showing 25 of 1,065 cybersecurity consulting firms based in Australia

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Cybersecurity consulting firms based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 225 HQs

554Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

687

11-50

292

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity consulting firms by metro

Metro	Companies
Cybersecurity consulting firms in Sydney	225
Cybersecurity consulting firms in Melbourne	199
Cybersecurity consulting firms in Brisbane	82
Cybersecurity consulting firms in Canberra	67
Cybersecurity consulting firms in Perth	49
Cybersecurity consulting firms in Adelaide	36
Cybersecurity consulting firms in Brisbane City	15

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 consulting firms”, with match quality audited by blind human judging, and headquartered in 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; 7 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 consulting firms are there based in Australia?

There are 1,065 cybersecurity consulting firms headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

PT Itsec Asia TBK, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most cybersecurity consulting firms?

Sydney leads with 225 headquartered companies, followed by Melbourne (199) and Brisbane (82).

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 3,944 verified decision-maker contacts tracked across these 1,065 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.