Company lists · Data refreshed September 2026
Top 24 Security monitoring services based in Australia
RevenueBase identified 543 security monitoring services headquartered in Australia as of September 2026 and tracks 4,344 professional contacts across them, including 1,228 with verified work emails and 239 with mobile numbers. Melbourne is the largest hub.
This list covers security monitoring 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, 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.
The 24 largest security monitoring services based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 178 | ||||
“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 123 | ||||
“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 122 | ||||
“Infotrust (ITS) is Australia’s leading cyber security and managed technology services provider listed on the ASX.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 74 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 69 | ||||
“Australia's Multisite Security Specialist.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 65 | ||||
“We are CPS Security Services, a 100% Australian-owned and operated company founded in 2006.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 57 | ||||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 47 | ||||
“Our mission is to help our clients protect their assets, reputation, and customers from cyber threats, while also enabling them to embrace digital transformation and innovation…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 46 | ||||
“Clarity in a complex world.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 42 | ||||
“Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 41 | ||||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 35 | ||||
“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 34 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 14 | 33 | ||||
“NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 33 | ||||
“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 31 | ||||
“CSO Group provides ICT security services and solutions to protect Australian businesses from advanced cyber threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 26 | ||||
“Minimise the risk of a cybersecurity incident.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 26 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 20 | 25 | ||||
“Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 24 | ||||
“ThreatDefence provides innovative Security Operations and cyber defence solutions to MSPs and Enterprises.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 23 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 22 | ||||
“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, 2026Thanks. The Data Team will review it. | |||||
| 24 | 21 | ||||
“AMA Security is a provider of strategically tailored security solutions for commercial, business & industry, Government and Defence clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 24 of 543 security monitoring services based in Australia
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Security monitoring services based in Australia at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 services, 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 services”. 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 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 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, 1,228 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 services by metro
- Security monitoring services in Melbourne80
- Security monitoring services in Sydney70
Frequently asked
How many security monitoring services are there based in Australia?
RevenueBase identified 543 security monitoring 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?
ADT Security Australia, headquartered in Rydalmere, tops this list with the largest team on record.
Which city has the most security monitoring services?
Melbourne leads with 80 headquartered companies, followed by Sydney (70) and Brisbane (22).
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 1,228 verified decision-maker contacts tracked across these 543 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.
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