Company lists · Data refreshed September 2026

Top 25 Security consultancies based in Australia

Name: Security consultancies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,540 companies tracked

RevenueBase identified 1,540 security consultancies headquartered in Australia as of September 2026 and tracks 15,476 professional contacts across them, including 5,232 with verified work emails. Sydney is the largest hub.

This list covers security consultancies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

1,540Companies

15,476Contacts tracked

5,232Verified emails

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The 25 largest security consultancies based in Australia

Ranked by team size

Top 25 of 1,540 security consultancies based in Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to security consultancies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Wilson Security	Partial evidence	Essendon Fields, AustraliaHQ checked Sep 21, 2026	5,001-10,000	1,813 contacts →
	Partial evidence “At Wilson Security, we are committed to building a safer future for everyone.” Source: RevenueBase Database · checked Sep 21, 2026
2	SNP Security	Partial evidence	West Ryde, AustraliaHQ checked Sep 21, 2026	1,001-5,000	510 contacts →
	Partial evidence “Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
3	Centorrino Technologies	Partial evidence	Coburg, AustraliaHQ checked Sep 21, 2026	201-500	352 contacts →
	Partial evidence “We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: RevenueBase Database · checked Sep 21, 2026
4	Acesgroup	Partial evidence	Redfern, AustraliaHQ checked Sep 21, 2026	1,001-5,000	198 contacts →
	Partial evidence “ACES Group, an Australian owned security organisation delivers security, risk and safety management, event management and training services to multiple industries including…” Source: RevenueBase Database · checked Sep 21, 2026
5	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 21, 2026	501-1,000	178 contacts →
	Indirect evidence “For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Source: RevenueBase Database · checked Sep 21, 2026
6	Risk Associates - Emea & Asia	Partial evidence	Bella Vista, AustraliaHQ checked Sep 21, 2026	51-200	170 contacts →
	Partial evidence “Ensuring your business is handling cyber security risks effectively has never been more important.” Source: RevenueBase Database · checked Sep 21, 2026
7	PMT Security Systems	Indirect evidence	Tullamarine, AustraliaHQ checked Sep 21, 2026	51-200	144 contacts →
	Indirect evidence “PMT is a national wholly Australian privately-owned company.” Source: RevenueBase Database · checked Sep 21, 2026
8	Providence Consulting	Indirect evidence	Barton, AustraliaHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “Providence Consulting is an Australian, veteran-initiated professional services firm, established in Canberra in 2005.” Source: RevenueBase Database · checked Sep 21, 2026
9	Triskele Labs	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	123 contacts →
	Indirect evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 21, 2026
10	Sekuro	Partial evidence	AustraliaHQ checked Sep 21, 2026	51-200	104 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
11	ARA Security	Partial evidence	Kingsgrove, AustraliaHQ checked Sep 21, 2026	201-500	101 contacts →
	Partial evidence “ARA Security delivers turnkey security solutions to a number of industries across Australia.” Source: RevenueBase Database · checked Sep 21, 2026
12	Kaine Mathrick Tech	Indirect evidence	Port Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	93 contacts →
	Indirect evidence “Australia’s cyber-first Managed Service Provider and true technology partner.” Source: RevenueBase Database · checked Sep 21, 2026
13	Secom Technical Services PTY LTD	Partial evidence	Canberra Airport, AustraliaHQ checked Sep 21, 2026	51-200	88 contacts →
	Partial evidence “Secom delivers electronic security solutions for commercial, industrial, and government clients throughout Australia.” Source: RevenueBase Database · checked Sep 21, 2026
14	ISEC	Partial evidence	Alexandria, AustraliaHQ checked Sep 21, 2026	201-500	87 contacts →
	Partial evidence “Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Source: RevenueBase Database · checked Sep 21, 2026
15	National Protective Services	Partial evidence	South Melbourne, AustraliaHQ checked Sep 21, 2026	1,001-5,000	82 contacts →
	Partial evidence “National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…” Source: RevenueBase Database · checked Sep 21, 2026
16	Infront Security Services	Partial evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	201-500	82 contacts →
	Partial evidence “Infront Security Services was established in 2002 to provide a fresh alternative to the Qld security marketplace, focussing predominately on event management and crowd control…” Source: RevenueBase Database · checked Sep 21, 2026
17	Omega Security Solutions	Partial evidence	Yarraville, AustraliaHQ checked Sep 21, 2026	51-200	77 contacts →
	Partial evidence “Omega Security Solutions can professionally specify, supply, install and most importantly, maintain your electronic and mechanical security systems to the highest standard…” Source: RevenueBase Database · checked Sep 21, 2026
18	Chubb Fire & Security Australia	Partial evidence	Rydalmere, AustraliaHQ checked Sep 21, 2026	1,001-5,000	76 contacts →
	Partial evidence “Whether it’s home security, business security, fire fighting products, fire detection systems, fire equipment services or fire training courses, we combine state-of-the-art…” Source: RevenueBase Database · checked Sep 21, 2026
19	Business Aspect	Indirect evidence	Toowong, AustraliaHQ checked Sep 21, 2026	51-200	75 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
20	AG Security Group	Partial evidence	Adelaide, AustraliaHQ checked Sep 21, 2026	51-200	74 contacts →
	Partial evidence “AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.” Source: RevenueBase Database · checked Sep 21, 2026
21	Nexar Group Security Services I Cleaning Services Risk Services I Training Services	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	71 contacts →
	Partial evidence “ABOUT US Nexar Group foundations are built on driving change and evolution to not only the security industry, but for all of our services.” Source: RevenueBase Database · checked Sep 21, 2026
22	Signal Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	69 contacts →
	Partial evidence “Australia's Multisite Security Specialist.” Source: RevenueBase Database · checked Sep 21, 2026
23	Seme Solutions	Partial evidence	Perth, AustraliaHQ checked Sep 21, 2026	51-200	67 contacts →
	Partial evidence “SEME Solutions have been one of Australia’s leading provider of security solutions for over 50 years, specialising in the integration of CCTV, Access Control, Intruder Detection…” Source: RevenueBase Database · checked Sep 21, 2026
24	Constant	Partial evidence	Parramatta, AustraliaHQ checked Sep 21, 2026	501-1,000	67 contacts →
	Partial evidence “Constant, a wholly owned Australian company, was established in 2003 providing peace of mind for our clients to get on with what is important for them, by securing their valuable…” Source: RevenueBase Database · checked Sep 21, 2026
25	CPS Security Services	Partial evidence	Epping, AustraliaHQ checked Sep 21, 2026	51-200	65 contacts →
	Partial evidence “We are CPS Security Services, a 100% Australian-owned and operated company founded in 2006.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: security consultancies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names security consultancies.
Partial evidence: Its own public description names part of security consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name security consultancies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,540 security consultancies based in Australia

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Security consultancies based in Australia at a glance

As of Sep 21, 2026

33.8%Verified-email coverage

10.0Average contacts per company

1-10Median size (employees)

15.6%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

858

11-50

425

51-200

172

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,540 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “security consultancies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names security consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among security consultancies, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 5,232 across the full list. 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 September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Security consultancies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names security consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many security consultancies are there based in Australia?

RevenueBase identified 1,540 security consultancies headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Wilson Security, headquartered in Essendon Fields, tops this list with the largest team on record.

Which city has the most security consultancies?

Sydney leads with 240 headquartered companies, followed by Melbourne (225) and Brisbane (99).

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 5,232 verified decision-maker contacts tracked across these 1,540 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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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 Smart Search, 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.