Company lists · Data refreshed November 2026

Top 22 Managed security companies based in Australia

RevenueBase identified 579 company matches for managed security companies associated with Australia as of November 2026 and tracks 92,775 professional contacts across them, including 2,123 with verified work emails. Melbourne is the largest hub.

This list covers company matches for managed security companies 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 November 5, 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 Nov 5, 2026 How this list was built
579Companies
92,775Contacts tracked
2,123Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 22 largest managed security companies based in Australia

Ranked by team size
Top 22 of 579 company matches for managed security companies based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchPreston, AustraliaHQ recorded Nov 5, 202610001+242 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchRydalmere, AustraliaHQ recorded Nov 5, 2026501-1,000196 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchTullamarine, AustraliaHQ recorded Nov 5, 202651-200159 contacts →

Exact match

“PMT is a national wholly Australian privately-owned company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSydney, AustraliaHQ recorded Nov 5, 2026201-500138 contacts →

Exact match

“Infotrust (ITS) is Australia’s leading cyber security and managed technology services provider listed on the ASX.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLane Cove West, AustraliaHQ recorded Nov 5, 202651-200125 contacts →

Exact match

“Innovative Managed Services: Bridging Assets, Systems, and Security Welcome to Renew IT, your trusted partner in delivering comprehensive managed services, systems integration…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202651-200121 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchAlexandria, AustraliaHQ recorded Nov 5, 2026201-50095 contacts →

Exact match

“Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchSouth Melbourne, AustraliaHQ recorded Nov 5, 20261,001-5,00093 contacts →

Exact match

“National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchBrisbane, AustraliaHQ recorded Nov 5, 2026201-50085 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchPort Melbourne, AustraliaHQ recorded Nov 5, 202651-20084 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202611-5078 contacts →

Exact match

“Australia's Multisite Security Specialist.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchAdelaide, AustraliaHQ recorded Nov 5, 202651-20076 contacts →

Exact match

“AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSydney, AustraliaHQ recorded Nov 5, 202651-20075 contacts →

Exact match

“Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchCheltenham, AustraliaHQ recorded Nov 5, 2026201-50071 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchParramatta, AustraliaHQ recorded Nov 5, 2026501-1,00068 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchEpping, AustraliaHQ recorded Nov 5, 202651-20068 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchCremorne, AustraliaHQ recorded Nov 5, 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 · Nov 5, 2026 · View company records in RevenueBase
18Exact matchDarra, AustraliaHQ recorded Nov 5, 2026201-50050 contacts →

Exact match

“Founded in 2004 Asset Protection Systems Pty.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchMulgrave, AustraliaHQ recorded Nov 5, 202651-20044 contacts →

Exact match

“Clarity in a complex world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchAdelaide, AustraliaHQ recorded Nov 5, 2026201-50044 contacts →

Exact match

“There are numerous factors that contribute to Lima One excelling in the security industry, we believe our attitude and approach to our clients and the professionalism of our hands…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchClayfield, AustraliaHQ recorded Nov 5, 2026201-50044 contacts →

Exact match

“Security Company in Brisbane”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSydney, AustraliaHQ recorded Nov 5, 202611-5043 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 · Nov 5, 2026 · View company records in RevenueBase

Showing 22 of 579 managed security companies based in Australia

See the full list, filter by size, metro and specialty, and access 2,123 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed security companies based in Australia at a glance

As of Nov 5, 2026
2.3%Verified-email coverage
160.2Average contacts per company
11-50Median size (employees)
15.0%Largest-city concentration · Melbourne
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
209
11-50
215
51-200
100
201-500
32
501-1,000
5
1,001-5,000
8
10001+
2

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 579 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 “managed security companies” 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 2,123 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 November 5, 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 “managed security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed security companies are there based in Australia?

RevenueBase identified 579 company matches for managed security companies associated with Australia as of November 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?

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

Which city has the most managed security companies?

Melbourne leads with 87 company records, followed by Sydney (79) and Perth (29).

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 2,123 professional contacts with verified work emails tracked across these 579 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 November 5, 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.