Company lists · Data refreshed September 2026

Top 25 Managed security services companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 477 companies tracked

RevenueBase identified 477 managed security services companies headquartered in Australia as of September 2026 and tracks 5,154 professional contacts across them, including 1,995 with verified work emails and 277 with mobile numbers. Melbourne is the largest hub.

This list covers managed security services 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 5, 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 5, 2026 86% judged on-target in blind review

477Companies

5,154Contacts tracked

1,995Verified emails

277Mobile numbers

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The 25 largest managed security services companies based in Australia

Ranked by team size

Top 25 of 477 managed security services companies based in Australia, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to managed security services 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	Securitas Australia	Partial evidence	Preston, AustraliaHQ checked Sep 5, 2026	10001+	228 contacts →
	Partial evidence “We know how to offer the most effective security to our customers.” Source: RevenueBase Database · checked Sep 5, 2026
2	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 5, 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 5, 2026
3	Triskele Labs	Indirect evidence	Melbourne, AustraliaHQ checked Sep 5, 2026	51-200	123 contacts →
	Indirect evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 5, 2026
4	Infotrust	Strong evidence	Sydney, AustraliaHQ checked Sep 5, 2026	201-500	122 contacts →
	Strong evidence “Infotrust (ITS) is Australia’s leading cyber security and managed technology services provider listed on the ASX.” Source: RevenueBase Database · checked Sep 5, 2026
5	Renew IT	Strong evidence	Lane Cove West, AustraliaHQ checked Sep 5, 2026	51-200	115 contacts →
	Strong evidence “Innovative Managed Services: Bridging Assets, Systems, and Security Welcome to Renew IT, your trusted partner in delivering comprehensive managed services, systems integration…” Source: RevenueBase Database · checked Sep 5, 2026
6	Sekuro	Partial evidence	AustraliaHQ checked Sep 5, 2026	51-200	104 contacts →
	Partial evidence “Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Source: RevenueBase Database · checked Sep 5, 2026
7	Kaine Mathrick Tech	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 5, 2026	51-200	93 contacts →
	Partial evidence “Australia’s cyber-first Managed Service Provider and true technology partner.” Source: RevenueBase Database · checked Sep 5, 2026
8	Secure Agility	Partial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	87 contacts →
	Partial evidence “Secure Agility is a Australian-based technology partner specialising in secure managed IT services for NSW government, enterprise and mid-market organisations.” Source: RevenueBase Database · checked Sep 5, 2026
9	AG Security Group	Partial evidence	Adelaide, AustraliaHQ checked Sep 5, 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 5, 2026
10	Stickmancyber	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 5, 2026	51-200	72 contacts →
	Indirect evidence “At StickmanCyber we are on a mission to create a digital world that is safe for everyone.” Source: RevenueBase Database · checked Sep 5, 2026
11	Northbridge Systems	Strong evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	70 contacts →
	Strong evidence “Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Source: RevenueBase Database · checked Sep 5, 2026
12	Signal Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 5, 2026	11-50	69 contacts →
	Partial evidence “Australia's Multisite Security Specialist.” Source: RevenueBase Database · checked Sep 5, 2026
13	CPS Security Services	Partial evidence	Epping, AustraliaHQ checked Sep 5, 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 5, 2026
14	Ipsec PTY LTD	Partial evidence	Cremorne, AustraliaHQ checked Sep 5, 2026	11-50	57 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 5, 2026
15	Premium Solutions	Partial evidence	Woollahra, AustraliaHQ checked Sep 5, 2026	51-200	52 contacts →
	Partial evidence “Combining the very best personnel, processes and technology, Premium Solutions will redefine your expectations of the security industry.” Source: RevenueBase Database · checked Sep 5, 2026
16	Fortis Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 5, 2026	51-200	51 contacts →
	Partial evidence “Welcome to Fortis Security, founded in September of 2013, Fortis has grown year on year with customer support.” Source: RevenueBase Database · checked Sep 5, 2026
17	Oneteam IT PTY LTD	Indirect evidence	Toowong, AustraliaHQ checked Sep 5, 2026	51-200	47 contacts →
	Indirect evidence “OneTeam IT - means you’ll be benefitting from over 60 years of collective experience in maximising return on IT investments.” Source: RevenueBase Database · checked Sep 5, 2026
18	Wipro Shelde	Indirect evidence	Melbourne, AustraliaHQ checked Sep 5, 2026	51-200	47 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 5, 2026
19	Emerging IT	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 5, 2026	51-200	46 contacts →
	Indirect evidence “Clarity in a complex world.” Source: RevenueBase Database · checked Sep 5, 2026
20	Vectra	Strong evidence	Adelaide, AustraliaHQ checked Sep 5, 2026	51-200	42 contacts →
	Strong evidence “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: RevenueBase Database · checked Sep 5, 2026
21	Seccom Global	Partial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	41 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 5, 2026
22	Fifteen	Strong evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	36 contacts →
	Strong evidence “Delivering the next generation of managed cyber security, together.” Source: RevenueBase Database · checked Sep 5, 2026
23	Ionize	Partial evidence	Canberra, AustraliaHQ checked Sep 5, 2026	51-200	35 contacts →
	Partial evidence “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: RevenueBase Database · checked Sep 5, 2026
24	Astralas	Indirect evidence	Cremorne, AustraliaHQ checked Sep 5, 2026	51-200	35 contacts →
	Indirect evidence “Good people solving important problems.” Source: RevenueBase Database · checked Sep 5, 2026
25	NSB Cyber	Partial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	33 contacts →
	Partial evidence “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: RevenueBase Database · checked Sep 5, 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: managed security services 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 managed security services companies.
Partial evidence: Its own public description names part of managed security services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name managed security services 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 25 of 477 managed security services companies based in Australia

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Managed security services companies based in Australia at a glance

As of Sep 5, 2026

38.7%Verified-email coverage

5.4%Mobile-number coverage

10.8Average contacts per company

11-50Median size (employees)

16.4%Largest-city concentration · Melbourne

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

213

11-50

180

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1,8610–30

12731–60

061–90

090–180

7180+

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 managed security services 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 “managed security services 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 managed security services 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 managed security services 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, 1,995 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 5, 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.

Managed security services companies by metro

Managed security services companies in Melbourne78
Managed security services companies in Sydney77
Managed security services companies in Brisbane26
Managed security services 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 managed security services 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 managed security services companies are there based in Australia?

RevenueBase identified 477 managed security services 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?

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

Which city has the most managed security services companies?

Melbourne leads with 78 headquartered companies, followed by Sydney (77) and Brisbane (26).

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 1,995 verified decision-maker contacts tracked across these 477 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 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 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.