Company lists · Data refreshed September 2026

Top 25 Security monitoring service providers based in Australia

RevenueBase identified 435 security monitoring service providers headquartered in Australia as of September 2026 and tracks 5,817 professional contacts across them, including 1,408 with verified work emails and 234 with mobile numbers. Melbourne is the largest hub.

This list covers security monitoring service providers 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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 HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
435Companies
5,817Contacts tracked
1,408Verified emails
234Mobile numbers
Explore all 435 companies → Free signup · no credit card · 500 free credits

The 25 largest security monitoring service providers based in Australia

Ranked by team size
Top 25 of 435 security monitoring service providers based in Australia, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security monitoring service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Wilson SecurityPartial evidence
Essendon Fields, AustraliaHQ checked Sep 6, 20265,001-10,0001,813

“At Wilson Security, we are committed to building a safer future for everyone.”

Source: company website · checked Sep 6, 2026
2
SNP SecurityPartial evidence
West Ryde, AustraliaHQ checked Sep 6, 20261,001-5,000510

“Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.”

Source: company website · checked Sep 6, 2026
3
Securitas AustraliaPartial evidence
Preston, AustraliaHQ checked Sep 6, 202610001+228

“We know how to offer the most effective security to our customers.”

Source: company website · checked Sep 6, 2026
4
ADT Security AustraliaIndirect evidence
Rydalmere, AustraliaHQ checked Sep 6, 2026501-1,000178

“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.”

Source: company website · checked Sep 6, 2026
5
ARA SecurityPartial evidence
Kingsgrove, AustraliaHQ checked Sep 6, 2026201-500101

“ARA Security delivers turnkey security solutions to a number of industries across Australia.”

Source: company website · checked Sep 6, 2026
6South Melbourne, AustraliaHQ checked Sep 6, 20261,001-5,00082

“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: company website · checked Sep 6, 2026
7
AG Security GroupPartial evidence
Adelaide, AustraliaHQ checked Sep 6, 202651-20074

“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: company website · checked Sep 6, 2026
8
Signal SecurityPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 202611-5069

“Australia's Multisite Security Specialist.”

Source: company website · checked Sep 6, 2026
9
ConstantPartial evidence
Parramatta, AustraliaHQ checked Sep 6, 2026501-1,00067

“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: company website · checked Sep 6, 2026
10
CPS Security ServicesPartial evidence
Epping, AustraliaHQ checked Sep 6, 202651-20065

“We are CPS Security Services, a 100% Australian-owned and operated company founded in 2006.”

Source: company website · checked Sep 6, 2026
11
Exec SecurityStrong evidence
Melbourne, AustraliaHQ checked Sep 6, 2026501-1,00059

“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: company website · checked Sep 6, 2026
12
VectraPartial evidence
Adelaide, AustraliaHQ checked Sep 6, 202651-20042

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

Source: company website · checked Sep 6, 2026
13
Idetect GroupIndirect evidence
Melbourne, AustraliaHQ checked Sep 6, 202651-20034

“iDetect is proudly Australian owned and operated with a focus on supporting the needs of the building and construction industries throughout Australia.”

Source: company website · checked Sep 6, 2026
14
Security1 S1Partial evidence
Phillip, AustraliaHQ checked Sep 6, 202651-20033

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: company website · checked Sep 6, 2026
15
AVA GroupPartial evidence
Mulgrave, AustraliaHQ checked Sep 6, 202651-20028

“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: company website · checked Sep 6, 2026
16Chipping Norton, AustraliaHQ checked Sep 6, 202651-20028

“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: company website · checked Sep 6, 2026
17
Eclipse Security SystemsPartial evidence
Hallam, AustraliaHQ checked Sep 6, 202611-5026

“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: company website · checked Sep 6, 2026
18
Group 1 SecurityIndirect evidence
Sydney, AustraliaHQ checked Sep 6, 2026201-50025

“FreeCall 1800 GROUP 1.”

Source: company website · checked Sep 6, 2026
19
Crown SecurityPartial evidence
Perth, AustraliaHQ checked Sep 6, 202611-5023

“Based in Joondalup (Perth, WA), at Crown Security we specialise in commercial electronic security, video surveillance, automation, smart parking solution and integration solutions.”

Source: company website · checked Sep 6, 2026
20
Exact SecurityPartial evidence
Jamisontown, AustraliaHQ checked Sep 6, 202651-20023

“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: company website · checked Sep 6, 2026
21
Total Security SystemsPartial evidence
Canning Vale, AustraliaHQ checked Sep 6, 202611-5022

“Total Security Systems is a West Australian owned company, operating for over 10 years.”

Source: company website · checked Sep 6, 2026
22
Signature Security GroupStrong evidence
Gold Coast, AustraliaHQ checked Sep 6, 202651-20022

“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: company website · checked Sep 6, 2026
23
AMA SecurityPartial evidence
Adelaide, AustraliaHQ checked Sep 6, 202651-20021

“AMA Security is a provider of strategically tailored security solutions for commercial, business & industry, Government and Defence clients.”

Source: company website · checked Sep 6, 2026
24
Smokeshield SecurityPartial evidence
Springvale, AustraliaHQ checked Sep 6, 202611-5020

“Smokeshield Security – Protecting People, Premises & Profits for 40 Years Smokeshield Security is Australia’s market leader in advanced security solutions for commercial &…”

Source: company website · checked Sep 6, 2026
25
Advanced Security GroupPartial evidence
Tamworth, AustraliaHQ checked Sep 6, 202611-5019

“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: company website · checked Sep 6, 2026

Showing 25 of 435 security monitoring service providers based in Australia

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Security monitoring service providers based in Australia at a glance

As of Sep 6, 2026
11-50Median size (employees)
MelbourneLargest hub · 36 HQs
234Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
173
11-50
153
51-200
70
201-500
19
501-1,000
5
1,001-5,000
6
5,001-10,000
1
10001+
2

Verified emails by last verification

0–30
1,303
31–60
101
61–90
0
90–180
0
180+
4

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 monitoring service providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 monitoring service providers”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among security monitoring service providers, 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 an evidence 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, 1,408 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 6, 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 monitoring service providers by metro

  • Security monitoring service providers in Melbourne36
  • Security monitoring service providers in Sydney34

Frequently asked

How many security monitoring service providers are there based in Australia?

RevenueBase identified 435 security monitoring service providers 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 monitoring service providers?

Melbourne leads with 36 headquartered companies, followed by Sydney (34) and Brisbane (16).

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 1,408 verified decision-maker contacts tracked across these 435 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 6, 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 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.