Company lists · Data verified August 2026

Top 25 Cybersecurity consulting for defense based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 760 companies tracked

There are 760 cybersecurity consulting for defense headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 7,393 professional contacts across them, including 3,294 with verified work emails and 371 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity consulting for defense 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.

760Companies

7,393Contacts tracked

3,294Verified emails

371Mobile numbers

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The 25 largest cybersecurity consulting for defense based in Australia

Ranked by team size

Top 25 of 760 cybersecurity consulting for defense 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	Aurizn	Adelaide	201-500	157	114
4	Triskele Labs	Melbourne	51-200	123	89
5	Optic Security Group	Broome	201-500	122	92
6	Secutec	Sydney	51-200	102	37
7	Sekuro	n/a	51-200	100	70
8	Ever Nimble	Fortitude Valley	51-200	98	79
9	Kaine Mathrick Tech	Sydney	51-200	91	62
10	Informatech PTY LTD	Canberra	51-200	90	36
11	Northbridge Systems	St Leonards	51-200	70	27
12	Ampion	Melbourne	501-1,000	64	21
13	Entersoft Security	Brisbane	51-200	63	20
14	Skillfield	Melbourne	51-200	61	42
15	RED Piranha	Melbourne	51-200	58	41
16	Ctrl Cyber	Sydney	51-200	56	27
17	Deploypartners	North Sydney	51-200	51	24
18	Security Consulting Group PTY LTD SCG	Brisbane City	51-200	50	35
19	Dimiya Tech	Melbourne	51-200	50	2
20	Emerging IT	Mulgrave	51-200	45	27
21	Vectra	Melbourne	51-200	42	19
22	Bluerydge	Fyshwick	51-200	39	28
23	IPP Consulting PTY LTD	Canberra	51-200	37	24
24	Astralas	Cremorne	51-200	35	20
25	Ionize	Canberra	51-200	34	26

Showing 25 of 760 cybersecurity consulting for defense based in Australia

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Cybersecurity consulting for defense based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 153 HQs

371Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

493

11-50

198

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity consulting for defense by metro

Metro	Companies
Cybersecurity consulting for defense in Sydney	153
Cybersecurity consulting for defense in Melbourne	141
Cybersecurity consulting for defense in Brisbane	73
Cybersecurity consulting for defense in Canberra	67
Cybersecurity consulting for defense in Perth	33
Cybersecurity consulting for defense in Adelaide	25
Cybersecurity consulting for defense 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 consulting for defense”, 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; 5 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 for defense are there based in Australia?

There are 760 cybersecurity consulting for defense 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 for defense?

Sydney leads with 153 headquartered companies, followed by Melbourne (141) and Brisbane (73).

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 3,294 verified decision-maker contacts tracked across these 760 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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Cybersecurity consulting for defense by geography

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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.