Company lists · Data refreshed September 2026

Top 24 Homeland security contractors based in Australia

Name: Homeland security contractors based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 268 companies tracked

RevenueBase identified 268 homeland security contractors headquartered in Australia as of September 2026 and tracks 3,595 professional contacts across them, including 883 with verified work emails. Sydney is the largest hub.

This list covers homeland security contractors 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 28, 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 28, 2026 86% judged on-target in blind review

268Companies

3,595Contacts tracked

883Verified emails

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The 24 largest homeland security contractors based in Australia

Ranked by team size

Top 24 of 268 homeland security contractors based in Australia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to homeland security contractors: 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	SNP Security	Partial evidence	West Ryde, AustraliaHQ checked Sep 28, 2026	1,001-5,000	510 contacts →
	Partial evidence “Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
2	Securitas Australia	Partial evidence	Preston, AustraliaHQ checked Sep 28, 2026	10001+	228 contacts →
	Partial evidence “We know how to offer the most effective security to our customers.” Source: RevenueBase Database · checked Sep 28, 2026
3	Acesgroup	Partial evidence	Redfern, AustraliaHQ checked Sep 28, 2026	1,001-5,000	198 contacts →
	Partial evidence “ACES Group, an Australian owned security organisation delivers security, risk and safety management, event management and training services to multiple industries including…” Source: RevenueBase Database · checked Sep 28, 2026
4	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 28, 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 28, 2026
5	ISEC	Partial evidence	Alexandria, AustraliaHQ checked Sep 28, 2026	201-500	87 contacts →
	Partial evidence “Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Source: RevenueBase Database · checked Sep 28, 2026
6	National Protective Services	Partial evidence	South Melbourne, AustraliaHQ checked Sep 28, 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 28, 2026
7	Exec Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	501-1,000	59 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
8	LKA Group	Indirect evidence	Carlton, AustraliaHQ checked Sep 28, 2026	51-200	59 contacts →
	Indirect evidence “For decades, LKA Group has provided the highest level of service to all clients, from small business to multinational corporations and governments.” Source: RevenueBase Database · checked Sep 28, 2026
9	Advent Security Australia & NEW Zealand	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	501-1,000	55 contacts →
	Partial evidence “Australian owned Advent Security has been a leader in providing exceptional, value-for-money services to local, national and international clients in the public, private and…” Source: RevenueBase Database · checked Sep 28, 2026
10	Guardian Venue Management International	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	201-500	53 contacts →
	Partial evidence “Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Source: RevenueBase Database · checked Sep 28, 2026
11	Vibrant Services	Indirect evidence	Coburg North, AustraliaHQ checked Sep 28, 2026	201-500	51 contacts →
	Indirect evidence “Welcome to Vibrant Services.” Source: RevenueBase Database · checked Sep 28, 2026
12	Securcom PTY LTD	Partial evidence	Brendale, AustraliaHQ checked Sep 28, 2026	51-200	51 contacts →
	Partial evidence “Established in the year Securcom has 20 years’ experience as a specialist security solution provider.” Source: RevenueBase Database · checked Sep 28, 2026
13	Reddawn Australia PTY LTD	Partial evidence	Sydney Olympic Park, AustraliaHQ checked Sep 28, 2026	201-500	48 contacts →
	Partial evidence “Reddawn provides industry leading, comprehensive Security and Risk Management solutions for both corporate and commercial.” Source: RevenueBase Database · checked Sep 28, 2026
14	Diamond Protection	Indirect evidence	Mt Waverley, AustraliaHQ checked Sep 28, 2026	201-500	43 contacts →
	Indirect evidence “Diamond Protection Pty Ltd is a specialised and innovative national services provider, proudly Australian-owned and operating since 1995.” Source: RevenueBase Database · checked Sep 28, 2026
15	Vectra	Partial evidence	Adelaide, AustraliaHQ checked Sep 28, 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 28, 2026
16	Dynamiq	Indirect evidence	Box Hill, AustraliaHQ checked Sep 28, 2026	51-200	36 contacts →
	Indirect evidence “We exist by helping brave organisations thrive.” Source: RevenueBase Database · checked Sep 28, 2026
17	Noetic	Indirect evidence	Canberra, AustraliaHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “Noetic challenges clients to think differently and adopt new approaches to find solutions.” Source: RevenueBase Database · checked Sep 28, 2026
18	Fbis International	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	33 contacts →
	Indirect evidence “FBIS International Issues Management Pty Ltd For the past 19 years FBIS International Issues Management has investigated and resolved business issues and threats with complete…” Source: RevenueBase Database · checked Sep 28, 2026
19	The Security HUB	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	201-500	29 contacts →
	Partial evidence “The Security Hub delivers a complete packaged security solution and a risk mitigation program to its clients.” Source: RevenueBase Database · checked Sep 28, 2026
20	ANSIC	Partial evidence	Bowen Hills, AustraliaHQ checked Sep 28, 2026	51-200	29 contacts →
	Partial evidence “ANSIC is an Australian-based security, investigation & risk management firm, with recognised global capabilities and affiliates.” Source: RevenueBase Database · checked Sep 28, 2026
21	AVA Group	Partial evidence	Mulgrave, AustraliaHQ checked Sep 28, 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 28, 2026
22	Star International	Indirect evidence	Naval Base, AustraliaHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “STAR International is a Parabellum International company providing leading-edge critical risk & emergency response, safety and specialised services to the to Defence industry…” Source: RevenueBase Database · checked Sep 28, 2026
23	Panoptic Solutions -Australia & Asia Security & Risk Management	Indirect evidence	Robina, AustraliaHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Panoptic Solutions is trusted by some of the most influential organisations and individuals in the world to prepare crisis, protection and contingency plans; and operations for…” Source: RevenueBase Database · checked Sep 28, 2026
24	Group 1 Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	201-500	25 contacts →
	Indirect evidence “FreeCall 1800 GROUP 1.” Source: RevenueBase Database · checked Sep 28, 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: homeland security contractors. 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 homeland security contractors.
Partial evidence: Its own public description names part of homeland security contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name homeland security contractors. 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 24 of 268 homeland security contractors based in Australia

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Homeland security contractors based in Australia at a glance

As of Sep 28, 2026

24.6%Verified-email coverage

13.4Average contacts per company

11-50Median size (employees)

15.7%Largest-city concentration · Sydney

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

109

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 268 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 homeland security contractors, 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 “homeland security contractors”. 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 homeland security contractors), 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 homeland security contractors, 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, 883 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 28, 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.

Homeland security contractors by metro

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 homeland security contractors, 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 homeland security contractors are there based in Australia?

RevenueBase identified 268 homeland security contractors 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?

SNP Security, headquartered in West Ryde, tops this list with the largest team on record.

Which city has the most homeland security contractors?

Sydney leads with 42 headquartered companies, followed by Melbourne (35) and Perth (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 883 verified decision-maker contacts tracked across these 268 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 28, 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.