Company lists · Data refreshed September 2026

Top 25 Security architecture companies based in Australia

Name: Security architecture companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 298 companies tracked

RevenueBase identified 298 security architecture companies headquartered in Australia as of September 2026 and tracks 2,585 professional contacts across them, including 931 with verified work emails. Sydney is the largest hub.

This list covers security architecture 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 14, 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 14, 2026 86% judged on-target in blind review

298Companies

2,585Contacts tracked

931Verified emails

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The 25 largest security architecture companies based in Australia

Ranked by team size

Top 25 of 298 security architecture companies based in Australia, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to security architecture 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	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 14, 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 14, 2026
2	ARA Security	Partial evidence	Kingsgrove, AustraliaHQ checked Sep 14, 2026	201-500	101 contacts →
	Partial evidence “ARA Security delivers turnkey security solutions to a number of industries across Australia.” Source: RevenueBase Database · checked Sep 14, 2026
3	Secom Technical Services PTY LTD	Partial evidence	Canberra Airport, AustraliaHQ checked Sep 14, 2026	51-200	88 contacts →
	Partial evidence “Secom delivers electronic security solutions for commercial, industrial, and government clients throughout Australia.” Source: RevenueBase Database · checked Sep 14, 2026
4	National Protective Services	Partial evidence	South Melbourne, AustraliaHQ checked Sep 14, 2026	1,001-5,000	82 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 14, 2026
5	Northbridge Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	51-200	70 contacts →
	Partial 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 14, 2026
6	Ipsec PTY LTD	Partial evidence	Cremorne, AustraliaHQ checked Sep 14, 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 14, 2026
7	Security Consulting Group PTY LTD SCG	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	51-200	52 contacts →
	Partial evidence “SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…” Source: RevenueBase Database · checked Sep 14, 2026
8	Fortis Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 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 14, 2026
9	Vectra	Partial evidence	Adelaide, AustraliaHQ checked Sep 14, 2026	51-200	42 contacts →
	Partial evidence “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: RevenueBase Database · checked Sep 14, 2026
10	Seccom Global	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 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 14, 2026
11	Astralas	Indirect evidence	Cremorne, AustraliaHQ checked Sep 14, 2026	51-200	35 contacts →
	Indirect evidence “Good people solving important problems.” Source: RevenueBase Database · checked Sep 14, 2026
12	H3c Plus	Partial evidence	Bankstown, AustraliaHQ checked Sep 14, 2026	51-200	34 contacts →
	Partial evidence “The Team at H3C Plus have been providing Security Solutions for 10 years and have over 50 years of combined expertise in the Electronic Security Industry.” Source: RevenueBase Database · checked Sep 14, 2026
13	Netpoleon ANZ	Partial evidence	Docklands, AustraliaHQ checked Sep 14, 2026	501-1,000	34 contacts →
	Partial evidence “Originally founded in Netpoleon Group has become a leading provider of integrated security, networking solutions and value added services throughout the APAC region.” Source: RevenueBase Database · checked Sep 14, 2026
14	Security1 S1	Partial evidence	Phillip, AustraliaHQ checked Sep 14, 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 14, 2026
15	Cyberxcel	Indirect evidence	Brisbane, AustraliaHQ checked Sep 14, 2026	n/a	33 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026
16	CSO Group	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	11-50	31 contacts →
	Partial evidence “CSO Group provides ICT security services and solutions to protect Australian businesses from advanced cyber threats.” Source: RevenueBase Database · checked Sep 14, 2026
17	AVA Group	Partial evidence	Mulgrave, AustraliaHQ checked Sep 14, 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 14, 2026
18	Borderless CS	Indirect evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	11-50	26 contacts →
	Indirect evidence “About Us - Australia’s leading cybersecurity specialist, delivering comprehensive protection by Australian-based consultants only-no offshore teams- 100% cybersecurity-focused…” Source: RevenueBase Database · checked Sep 14, 2026
19	Group 1 Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 14, 2026	201-500	25 contacts →
	Indirect evidence “FreeCall 1800 GROUP 1.” Source: RevenueBase Database · checked Sep 14, 2026
20	Total Security Systems	Partial evidence	Canning Vale, AustraliaHQ checked Sep 14, 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 14, 2026
21	AMA Security	Partial evidence	Adelaide, AustraliaHQ checked Sep 14, 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 14, 2026
22	Surecity Networks	Indirect evidence	South Melbourne, AustraliaHQ checked Sep 14, 2026	11-50	20 contacts →
	Indirect evidence “SureCity Networks is an Australian Cybersecurity firm with offices in Melbourne, Sydney, Brisbane and the UK, trusted by enterprises globally.” Source: RevenueBase Database · checked Sep 14, 2026
23	Smokeshield Security	Partial evidence	Springvale, AustraliaHQ checked Sep 14, 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 14, 2026
24	Respiro	Strong evidence	Redfern, AustraliaHQ checked Sep 14, 2026	11-50	20 contacts →
	Strong evidence “Respiro – Network, Security & Workplace Architecture Experts Respiro designs, implements and supports secure network, cybersecurity and workplace technology architectures for…” Source: RevenueBase Database · checked Sep 14, 2026
25	Threat Intelligence	Indirect evidence	Sydney, AustraliaHQ checked Sep 14, 2026	11-50	19 contacts →
	Indirect evidence “Threat Intelligence is different.” Source: RevenueBase Database · checked Sep 14, 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: security architecture 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 security architecture companies.
Partial evidence: Its own public description names part of security architecture companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name security architecture 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 298 security architecture companies based in Australia

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Security architecture companies based in Australia at a glance

As of Sep 14, 2026

36.0%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

15.4%Largest-city concentration · Sydney

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

164

11-50

51-200

201-500

501-1,000

1,001-5,000

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 298 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 security architecture 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 “security architecture 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 security architecture 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 security architecture 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, 931 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 14, 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 architecture companies by metro

Security architecture companies in Sydney46
Security architecture companies in Melbourne35

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 security architecture 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 security architecture companies are there based in Australia?

RevenueBase identified 298 security architecture 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?

ADT Security Australia, headquartered in Rydalmere, tops this list with the largest team on record.

Which city has the most security architecture companies?

Sydney leads with 46 headquartered companies, followed by Melbourne (35) 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 931 verified decision-maker contacts tracked across these 298 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 14, 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.