Company lists · Data refreshed September 2026

Top 24 Security management companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 629 companies tracked

RevenueBase identified 629 security management companies headquartered in Australia as of September 2026 and tracks 11,917 professional contacts across them, including 2,265 with verified work emails. Sydney is the largest hub.

This list covers security management companies 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 14, 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 14, 2026 86% judged on-target in blind review

629Companies

11,917Contacts tracked

2,265Verified emails

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The 24 largest security management companies based in Australia

Ranked by team size

Top 24 of 629 security management companies based in Australia, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to security management companies: 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	MSS Security	Partial evidence	Parramatta, AustraliaHQ checked Sep 14, 2026	5,001-10,000	2,010 contacts →
	Partial evidence “The MSS Security Group (MSS) comprising MSS Security, MSS Strategic Medical & Rescue and SDS is unrivalled in its experience, capability and reputation.” Source: RevenueBase Database · checked Sep 14, 2026
2	Wilson Security	Partial evidence	Essendon Fields, AustraliaHQ checked Sep 14, 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 14, 2026
3	Securecorp	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 14, 2026	1,001-5,000	630 contacts →
	Indirect evidence “Securecorp employ more than 2,500 staff across Australia and have an annual turnover in excess of $100 million.” Source: RevenueBase Database · checked Sep 14, 2026
4	SNP Security	Partial evidence	West Ryde, AustraliaHQ checked Sep 14, 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 14, 2026
5	Southern Cross Protection	Indirect evidence	Silverwater, AustraliaHQ checked Sep 14, 2026	501-1,000	288 contacts →
	Indirect evidence “Established over 100 years ago, Southern Cross Protection is an Australian-owned and operated company.” Source: RevenueBase Database · checked Sep 14, 2026
6	MA Services Group	Indirect evidence	Keilor Park, AustraliaHQ checked Sep 14, 2026	5,001-10,000	274 contacts →
	Indirect evidence “MA Services Group is a 100% Australian owned company, founded with the vision of providing high performance, customer centric services in a safe and fair environment.” Source: RevenueBase Database · checked Sep 14, 2026
7	Securitas Australia	Partial evidence	Preston, AustraliaHQ checked Sep 14, 2026	10001+	228 contacts →
	Partial evidence “We know how to offer the most effective security to our customers.” Source: RevenueBase Database · checked Sep 14, 2026
8	Acesgroup	Strong evidence	Redfern, AustraliaHQ checked Sep 14, 2026	1,001-5,000	198 contacts →
	Strong 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 14, 2026
9	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 14, 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 14, 2026
10	Executive Risk Solutions ERS	Indirect evidence	Perth, AustraliaHQ checked Sep 14, 2026	501-1,000	134 contacts →
	Indirect evidence “When it comes to managing critical risk in complex, hostile or remote scenarios, ERS is the team you can count on for advice, assurance and action when needed.” Source: RevenueBase Database · checked Sep 14, 2026
11	ISEC	Strong evidence	Alexandria, AustraliaHQ checked Sep 14, 2026	201-500	87 contacts →
	Strong 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 14, 2026
12	National Protective Services	Partial evidence	South Melbourne, AustraliaHQ checked Sep 14, 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 14, 2026
13	Infront Security Services	Strong evidence	Brisbane, AustraliaHQ checked Sep 14, 2026	201-500	82 contacts →
	Strong 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 14, 2026
14	AG Security Group	Partial evidence	Adelaide, AustraliaHQ checked Sep 14, 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 14, 2026
15	Nexar Group Security Services I Cleaning Services Risk Services I Training Services	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 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 14, 2026
16	Signal Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	11-50	69 contacts →
	Partial evidence “Australia's Multisite Security Specialist.” Source: RevenueBase Database · checked Sep 14, 2026
17	Constant	Partial evidence	Parramatta, AustraliaHQ checked Sep 14, 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 14, 2026
18	Commander Security Services	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	n/a	66 contacts →
	Partial evidence “Commander Security Services is an Australian owned and operated company that has been created, and its foundations built on over 25 years’ experience in the security industry.” Source: RevenueBase Database · checked Sep 14, 2026
19	CPS Security Services	Partial evidence	Epping, AustraliaHQ checked Sep 14, 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 14, 2026
20	Monjon Australia	Strong evidence	Cheltenham, AustraliaHQ checked Sep 14, 2026	201-500	64 contacts →
	Strong evidence “Monjon (Australia) Pty Ltd (Monjon) is a family owned business with over two decades of experience in the provision of security risk management solutions for residential…” Source: RevenueBase Database · checked Sep 14, 2026
21	Exec Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	501-1,000	59 contacts →
	Partial evidence “Guarding Solutions \| Armed Guards \| 24/7 Grade A1 Monitoring \| Mobile Patrols \| Electronics \| Advisory EXEC Security is an Australian owned, national company that specialises in…” Source: RevenueBase Database · checked Sep 14, 2026
22	LKA Group	Indirect evidence	Carlton, AustraliaHQ checked Sep 14, 2026	51-200	59 contacts →
	Indirect evidence “For decades, LKA Group has provided the highest level of service to all clients, from small business to multinational corporations and governments.” Source: RevenueBase Database · checked Sep 14, 2026
23	Advent Security Australia & NEW Zealand	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	501-1,000	55 contacts →
	Partial evidence “Australian owned Advent Security has been a leader in providing exceptional, value-for-money services to local, national and international clients in the public, private and…” Source: RevenueBase Database · checked Sep 14, 2026
24	Guardian Venue Management International	Strong evidence	Sydney, AustraliaHQ checked Sep 14, 2026	201-500	53 contacts →
	Strong evidence “Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Source: RevenueBase Database · checked Sep 14, 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 management companies. 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 management companies.
Partial evidence: Its own public description names part of security management companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name security management companies. 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 24 of 629 security management companies based in Australia

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Security management companies based in Australia at a glance

As of Sep 14, 2026

19.0%Verified-email coverage

18.9Average contacts per company

11-50Median size (employees)

11.8%Largest-city concentration · Sydney

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

196

11-50

191

51-200

150

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 629 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 management companies, 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 management companies”. 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 management companies), 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 management companies, 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, 2,265 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 14, 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 management companies by metro

Security management companies in Sydney74
Security management companies in Melbourne63
Security management companies in Brisbane28
Security management companies in Perth25

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 management companies, 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 management companies are there based in Australia?

RevenueBase identified 629 security management companies 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?

MSS Security, headquartered in Parramatta, tops this list with the largest team on record.

Which city has the most security management companies?

Sydney leads with 74 headquartered companies, followed by Melbourne (63) and Brisbane (28).

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 2,265 verified decision-maker contacts tracked across these 629 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 14, 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.