Company lists · Data refreshed October 2026

Top 25 Information security consultancies based in Australia

RevenueBase identified 730 company matches for information security consultancies associated with Australia as of October 2026 and tracks 6,282 professional contacts across them, including 2,967 with verified work emails. Sydney is the largest hub.

This list covers company matches for information security consultancies associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built
730Companies
6,282Contacts tracked
2,967Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest information security consultancies based in Australia

Ranked by team size
Top 25 of 730 company matches for information security consultancies based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCoburg, AustraliaHQ recorded Oct 1, 2026201-500352 contacts →

Exact match

“We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchBella Vista, AustraliaHQ recorded Oct 1, 202651-200170 contacts →

Exact match

“Ensuring your business is handling cyber security risks effectively has never been more important.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202651-200123 contacts →

Exact match

“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchAustraliaHQ recorded Oct 1, 202651-200104 contacts →

Exact match

“Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchPort Melbourne, AustraliaHQ recorded Oct 1, 202651-20093 contacts →

Exact match

“Australia’s cyber-first Managed Service Provider and true technology partner.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchToowong, AustraliaHQ recorded Oct 1, 202651-20075 contacts →

Exact match

“At Business Aspect, our promise to our clients is to always look at things from a ‘fresh perspective’ and to ensure our engagement with you is based on a clear understanding of…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202651-20062 contacts →

Exact match

“Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchMelbourne, AustraliaHQ recorded Oct 1, 2026501-1,00061 contacts →

Exact match

“Welcome to Ampion.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchCremorne, AustraliaHQ recorded Oct 1, 202611-5057 contacts →

Exact match

“IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202611-5054 contacts →

Exact match

“At Kodez, we empower organisations of all sizes to deliver secure, high-impact digital outcomes through a blend of consulting, advisory, delivery, and managed services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202651-20054 contacts →

Exact match

“ctrl:cyber is an Australian owned and operated cybersecurity partner delivering tailored end-to-end solutions for industry-leading organisations.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202651-20052 contacts →

Exact match

“SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchMelbourne, AustraliaHQ recorded Oct 1, 202651-20051 contacts →

Exact match

“Welcome to Fortis Security, founded in September of 2013, Fortis has grown year on year with customer support.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchAdelaide, AustraliaHQ recorded Oct 1, 202651-20042 contacts →

Exact match

“Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchSydney, AustraliaHQ recorded Oct 1, 202611-5041 contacts →

Exact match

“Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchCanberra, AustraliaHQ recorded Oct 1, 202651-20035 contacts →

Exact match

“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchBrisbane City, AustraliaHQ recorded Oct 1, 202611-5035 contacts →

Exact match

“C5 Technology is a Brisbane-based IT consultancy company and systems integrator.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchCremorne, AustraliaHQ recorded Oct 1, 202651-20035 contacts →

Exact match

“Good people solving important problems.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchSydney, AustraliaHQ recorded Oct 1, 202611-5033 contacts →

Exact match

“NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchArundel, AustraliaHQ recorded Oct 1, 202651-20033 contacts →

Exact match

“Mercury IT provides proactive, security‑focused IT services that help Australian businesses operate safely, efficiently, and with confidence.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchBrisbane, AustraliaHQ recorded Oct 1, 202611-5032 contacts →

Exact match

“Division 5 is focused on building long-term relationships with our clients as their trusted cyber security advisor.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchSydney, AustraliaHQ recorded Oct 1, 202611-5031 contacts →

Exact match

“CSO Group provides ICT security services and solutions to protect Australian businesses from advanced cyber threats.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchNorth Sydney, AustraliaHQ recorded Oct 1, 202611-5031 contacts →

Exact match

“At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchRydalmere, AustraliaHQ recorded Oct 1, 202611-5031 contacts →

Exact match

“Ultimate IT Services is a managed security services and cloud integrator based in Sydney.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchCanberra, AustraliaHQ recorded Oct 1, 202651-20030 contacts →

Exact match

“The Cyber Capability team has extensive experience with many of our principal consultants having worked at senior levels in Federal and State governments and the commercial…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 730 information security consultancies based in Australia

See the full list, filter by size, metro and specialty, and access 2,967 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Information security consultancies based in Australia at a glance

As of Oct 1, 2026
47.2%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
20.5%Largest-city concentration · Sydney
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
484
11-50
190
51-200
44
201-500
6
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 730 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Australia whose business descriptions match “information security consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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
Every displayed company carries at least one verified work email. RevenueBase tracks 2,967 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “information security consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many information security consultancies are there based in Australia?

RevenueBase identified 730 company matches for information security consultancies associated with Australia as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Centorrino Technologies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most information security consultancies?

Sydney leads with 150 company records, followed by Melbourne (147) and Brisbane (60).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,967 professional contacts with verified work emails tracked across these 730 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 2026.

Ready to reach these companies? Verified emails and direct dials for all 730 information security consultancies based in Australia. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.