Company lists · Data refreshed September 2026

Top 25 Monitored security services based in Australia

Name: Monitored security services based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 384 companies tracked

RevenueBase identified 384 monitored security services headquartered in Australia as of September 2026 and tracks 3,046 professional contacts across them, including 794 with verified work emails. Melbourne is the largest hub.

This list covers monitored security services 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 28, 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 28, 2026 86% judged on-target in blind review

384Companies

3,046Contacts tracked

794Verified emails

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The 25 largest monitored security services based in Australia

Ranked by team size

Top 25 of 384 monitored security services based in Australia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to monitored security services: 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	Securitas Australia	Partial evidence	Preston, AustraliaHQ checked Sep 28, 2026	10001+	228 contacts →
	Partial evidence “We know how to offer the most effective security to our customers.” Source: RevenueBase Database · checked Sep 28, 2026
2	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 28, 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 28, 2026
3	PMT Security Systems	Indirect evidence	Tullamarine, AustraliaHQ checked Sep 28, 2026	51-200	144 contacts →
	Indirect evidence “PMT is a national wholly Australian privately-owned company.” Source: RevenueBase Database · checked Sep 28, 2026
4	AG Security Group	Partial evidence	Adelaide, AustraliaHQ checked Sep 28, 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 28, 2026
5	Signal Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	11-50	69 contacts →
	Partial evidence “Australia's Multisite Security Specialist.” Source: RevenueBase Database · checked Sep 28, 2026
6	Constant	Partial evidence	Parramatta, AustraliaHQ checked Sep 28, 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 28, 2026
7	CPS Security Services	Partial evidence	Epping, AustraliaHQ checked Sep 28, 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 28, 2026
8	Exec Security	Strong evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	501-1,000	59 contacts →
	Strong 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 28, 2026
9	Idetect Group	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	34 contacts →
	Indirect evidence “iDetect is proudly Australian owned and operated with a focus on supporting the needs of the building and construction industries throughout Australia.” Source: RevenueBase Database · checked Sep 28, 2026
10	Security1 S1	Partial evidence	Phillip, AustraliaHQ checked Sep 28, 2026	51-200	33 contacts →
	Partial evidence “Security 1 was established as a separate entity in 2001 as the electronic and manpower section of the Newham group which has operated one of the nations leading Locksmith company…” Source: RevenueBase Database · checked Sep 28, 2026
11	AVA Group	Partial evidence	Mulgrave, AustraliaHQ checked Sep 28, 2026	51-200	28 contacts →
	Partial evidence “Ava Group is a market leader of risk management services and technologies, trusted by some of the most security conscious commercial, industrial, military and government clients…” Source: RevenueBase Database · checked Sep 28, 2026
12	Oscar Security Group PTY LTD	Partial evidence	Chipping Norton, AustraliaHQ checked Sep 28, 2026	51-200	28 contacts →
	Partial evidence “Welcome to Oscar Security Group - Your Safety, Our Top Priority We pride ourselves on our people-centric approach, we set the standard for the customer experience by taking…” Source: RevenueBase Database · checked Sep 28, 2026
13	Eclipse Security Systems	Partial evidence	Hallam, AustraliaHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “Eclipse Security Systems has been providing Business and Commercial Security Solutions throughout Melboune since Over the years Eclipse Security Systems has led with the changes…” Source: RevenueBase Database · checked Sep 28, 2026
14	Group 1 Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	201-500	25 contacts →
	Indirect evidence “FreeCall 1800 GROUP 1.” Source: RevenueBase Database · checked Sep 28, 2026
15	Crown Security	Partial evidence	Perth, AustraliaHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Based in Joondalup (Perth, WA), at Crown Security we specialise in commercial electronic security, video surveillance, automation, smart parking solution and integration solutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Exact Security	Partial evidence	Jamisontown, AustraliaHQ checked Sep 28, 2026	51-200	23 contacts →
	Partial evidence “Exact is focused on being the leader in the quality sector of the security industry - highly respected by regulators, clients and their customers, government bodies and police.” Source: RevenueBase Database · checked Sep 28, 2026
17	Total Security Systems	Partial evidence	Canning Vale, AustraliaHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Total Security Systems is a West Australian owned company, operating for over 10 years.” Source: RevenueBase Database · checked Sep 28, 2026
18	Signature Security Group	Strong evidence	Gold Coast, AustraliaHQ checked Sep 28, 2026	51-200	22 contacts →
	Strong evidence “Signature Security Group has relaunched in Australia as part of the Intelligent Monitoring Group (IMG), incorporating Adeva Security into IMG's Mammoth Security subsidiary.” Source: RevenueBase Database · checked Sep 28, 2026
19	AMA Security	Partial evidence	Adelaide, AustraliaHQ checked Sep 28, 2026	51-200	21 contacts →
	Partial evidence “AMA Security is a provider of strategically tailored security solutions for commercial, business & industry, Government and Defence clients.” Source: RevenueBase Database · checked Sep 28, 2026
20	Smokeshield Security	Partial evidence	Springvale, AustraliaHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “Smokeshield Security – Protecting People, Premises & Profits for 40 Years Smokeshield Security is Australia’s market leader in advanced security solutions for commercial &…” Source: RevenueBase Database · checked Sep 28, 2026
21	Advanced Security Group	Partial evidence	Tamworth, AustraliaHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Advanced Security Group (ASG) Protecting What Is Yours At Advanced Security Group, we pride ourselves on being a trusted partner in safeguarding homes, businesses, and communities…” Source: RevenueBase Database · checked Sep 28, 2026
22	Guardcorp Security PTY LTD	Partial evidence	Ultimo, AustraliaHQ checked Sep 28, 2026	201-500	19 contacts →
	Partial evidence “Guardcorp Security is a privately owned Australian company providing professional and comprehensive security services to the commercial, private, government, industrial and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Central Monitoring Services	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “At the heart of securing what matters most to you.” Source: RevenueBase Database · checked Sep 28, 2026
24	Secure People	Partial evidence	Bella Vista, AustraliaHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Secure People is a national leader in the Australian electronic security industry, supported by a highly skilled team of expert management and technical professionals.” Source: RevenueBase Database · checked Sep 28, 2026
25	Vision Security Solutions Australia	Partial evidence	Smeaton Grange, AustraliaHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Our Company Vision is to excel in providing quality, proactive security solutions to the marketplace while focusing on long term customer relationships built on trust.” Source: RevenueBase Database · checked Sep 28, 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: monitored security services. 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 monitored security services.
Partial evidence: Its own public description names part of monitored security services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name monitored security services. 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 384 monitored security services based in Australia

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Monitored security services based in Australia at a glance

As of Sep 28, 2026

26.1%Verified-email coverage

7.9Average contacts per company

11-50Median size (employees)

8.9%Largest-city concentration · Melbourne

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

178

11-50

124

51-200

201-500

501-1,000

1,001-5,000

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 384 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 monitored security services, 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 “monitored security services”. 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 monitored security services), 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 monitored security services, 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, 794 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 28, 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.

Monitored security services by metro

Monitored security services in Melbourne34

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 monitored security services, 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 monitored security services are there based in Australia?

RevenueBase identified 384 monitored security services 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?

Securitas Australia, headquartered in Preston, tops this list with the largest team on record.

Which city has the most monitored security services?

Melbourne leads with 34 headquartered companies, followed by Sydney (26) and Brisbane (15).

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 794 verified decision-maker contacts tracked across these 384 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 28, 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.