Company lists · Data verified August 2026

Top 20 Big data security companies based in Australia

Name: Big data security companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 40 companies tracked

There are 40 big data security companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 342 professional contacts across them, including 169 with verified work emails and 43 with mobile numbers. Sydney is the largest hub.

This list covers big data security companies 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.

40Companies

342Contacts tracked

169Verified emails

43Mobile numbers

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The 20 largest big data security companies based in Australia

Ranked by team size

Top 20 of 40 big data security companies 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	Prophecy International PTY LTD	Adelaide	51-200	66	54
2	Archtis	Barton	51-200	58	40
3	Guardware Australia	Sydney	11-50	41	1
4	DTACT	Melbourne	11-50	20	11
5	Katana1	Sydney	11-50	17	8
6	Cocoon Data	Sydney	11-50	16	12
7	Cleared	Canberra	11-50	11	9
8	Zirilio	Melbourne	11-50	10	6
9	Sententia PTY LTD	Surry Hills	11-50	10	5
10	Databl	Perth	11-50	6	5
11	Integrated Security Services PTY LTD	Keilor Park	11-50	6	4
12	D2unet PTY LTD	Sydney	1-10	6	2
13	Aurguard	Docklands	1-10	5	3
14	Small Robot	Melbourne	1-10	4	2
15	Designing IT Solutions	Heathcote	1-10	4	1
16	Cogniso	Sydney	11-50	3	1
17	Magnitude 8	Melbourne	1-10	2	2
18	Cyberti	Australia	11-50	2	1
19	Subrosa	Melbourne	1-10	2	1
20	Nucleus Cyber	Barton	11-50	1	1

Showing 20 of 40 big data security companies based in Australia

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Big data security companies based in Australia at a glance

As of Aug 28, 2026

11-50Median size (employees)

SydneyLargest hub · 12 HQs

43Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Big data security companies by metro

Metro	Companies
Big data security companies in Sydney	12
Big data security companies in Melbourne	8
Big data security companies in Canberra	3
Big data security companies in Barton	2
Big data security companies in Adelaide	2
Big data security companies in Molendinar	1
Big data security companies in Ulverstone	1
Big data security companies in Docklands	1

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 “big data security companies”, 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; 1 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 big data security companies are there based in Australia?

There are 40 big data security companies headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Prophecy International PTY LTD, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most big data security companies?

Sydney leads with 12 headquartered companies, followed by Melbourne (8) and Canberra (3).

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 169 verified decision-maker contacts tracked across these 40 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.