Company lists · Data refreshed September 2026

Top 25 List security companies based in Melbourne, Australia

Name: List security companies based in Melbourne, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 85 companies tracked

RevenueBase identified 85 list security companies headquartered in Melbourne, Australia as of September 2026 and tracks 768 professional contacts across them, including 165 with verified work emails. Sydney is the largest hub.

This list covers list security companies headquartered in Melbourne, 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 21, 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 21, 2026 86% judged on-target in blind review

85Companies

768Contacts tracked

165Verified emails

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The 25 largest list security companies based in Melbourne, Australia

Ranked by team size

Top 25 of 85 list security companies based in Melbourne, Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to list security 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	Nexar Group Security Services I Cleaning Services Risk Services I Training Services	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	71 contacts →
	Partial evidence “ABOUT US Nexar Group foundations are built on driving change and evolution to not only the security industry, but for all of our services.” Source: RevenueBase Database · checked Sep 21, 2026
2	Signal Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	69 contacts →
	Partial evidence “Australia's Multisite Security Specialist.” Source: RevenueBase Database · checked Sep 21, 2026
3	Exec Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
4	Advent Security Australia & NEW Zealand	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
5	Inner Range Australia & NEW Zealand	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	54 contacts →
	Partial evidence “Inner Range is a manufacturer of integrated Video, Access Control and Security solutions.” Source: RevenueBase Database · checked Sep 21, 2026
6	Idetect Group	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	34 contacts →
	Indirect evidence “iDetect is proudly Australian owned and operated with a focus on supporting the needs of the building and construction industries throughout Australia.” Source: RevenueBase Database · checked Sep 21, 2026
7	Fbis International	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
8	Cosive	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “We help organisations get better at Security Operations and Cyber Threat Intelligence with specialised consulting, engineering, and managed security platforms.” Source: RevenueBase Database · checked Sep 21, 2026
9	Commsecurity Australia	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “COMMSecurity has successfully delivered multiple integrated building projects.” Source: RevenueBase Database · checked Sep 21, 2026
10	Secured Enterprise	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	12 contacts →
	Partial evidence “Secured Enterprise is a globally recognized pioneer in online cyber security that collaborate with businesses in Australia, Europe, South Africa, North America, and New Zealand.” Source: RevenueBase Database · checked Sep 21, 2026
11	Vcpg Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	8 contacts →
	Partial evidence “Welcome to VCPG Security – where your safety is our top priority.” Source: RevenueBase Database · checked Sep 21, 2026
12	Shadowlens	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “ShadowLens is a cyber-security services and solutions provider that specialises in the synergy between users and data to protect digital information.” Source: RevenueBase Database · checked Sep 21, 2026
13	IDS Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	5 contacts →
	Partial evidence “Here at IDS Security, we’re driven by one simple goal, to totally delight our clients by keeping their businesses safe from the ever-increasing threats they face to their…” Source: RevenueBase Database · checked Sep 21, 2026
14	Trinity Cyber Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “At Trinity we are dedicated to providing our clients with the best possible customer experience while ensuring their safety and security in the digital world.” Source: RevenueBase Database · checked Sep 21, 2026
15	Jim's Security Australia & NZ	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Jim's Security is a leading provider of comprehensive electronic security solutions for businesses in Australia.” Source: RevenueBase Database · checked Sep 21, 2026
16	Australasian Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	5 contacts →
	Partial evidence “Australasian Security is a dynamic and innovative company committed to providing highly professional, reliable and cost-effective security guarding services to retail, corporate…” Source: RevenueBase Database · checked Sep 21, 2026
17	Matryx Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “We're a close-knit team of passionate and compassionate security professionals who genuinely love helping others.” Source: RevenueBase Database · checked Sep 21, 2026
18	Small Robot	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Who are Small Robot - Australian owned & operated company specialising in Cloud, AI & Cybersecurity- Serving enterprise, emerging businesses and a key focus on SMBs.” Source: RevenueBase Database · checked Sep 21, 2026
19	Acost Security Services	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	3 contacts →
	Partial evidence “ACOST Security Services currently provides a wide range of security related functions, specialising in the provision of alarm monitoring, electronic security installations, mobile…” Source: RevenueBase Database · checked Sep 21, 2026
20	Sicarius	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “Sicarius is an Australian cybersecurity firm offering three services: Beacon, a continuous security posture monitoring platform for Australian AFFORDABILITY TAILORED FOR SMALL…” Source: RevenueBase Database · checked Sep 21, 2026
21	Fast Electronic Systems	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
22	A Team Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	3 contacts →
	Partial evidence “A Team Security Group is a proudly Australian-owned and operated security services provider dedicated to safeguarding our clients' assets, personnel, and reputation.” Source: RevenueBase Database · checked Sep 21, 2026
23	Zecureright PTY LTD	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	3 contacts →
	Partial evidence “Headquartered in Mill Park, Vic ZecureRight's mission is To deliver the highest quality professional security services based on trust and confidence while Ensuring the safety and…” Source: RevenueBase Database · checked Sep 21, 2026
24	Culprit	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	3 contacts →
	Partial evidence “Security is not an exact science.” Source: RevenueBase Database · checked Sep 21, 2026
25	Pure.Security A Tesserent Company	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	2 contacts →
	Partial evidence “Pure Security is part of the Tesserent group, and is rebranding as Tesserent - Australia's largest ASX listed cybersecurity company (ASX:TNT).” Source: RevenueBase Database · checked Sep 21, 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: list security 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 list security companies.
Partial evidence: Its own public description names part of list security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name list security 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 85 list security companies based in Melbourne, Australia

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List security companies based in Melbourne, Australia at a glance

As of Sep 21, 2026

21.5%Verified-email coverage

9.0Average contacts per company

11-50Median size (employees)

103.5%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Australia list rather than for Melbourne, so it is reported there. Company counts and contact totals on this page are exact for Melbourne, over 85 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 list security 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 Melbourne, Australia whose own description of what they do matches “list security 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 list security 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 list security companies, and records with no verified work email. Companies headquartered outside Melbourne 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, 165 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 21, 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.

List security companies by metro in Australia

List security companies in Sydney88
List security companies in Melbourne85
List security companies in Brisbane34
List security companies in Perth31

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 list security 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 list security companies are there based in Melbourne, Australia?

RevenueBase identified 85 list security companies headquartered in Melbourne, 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?

Nexar Group Security Services I Cleaning Services Risk Services I Training Services, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most list security companies?

Sydney leads with 88 headquartered companies, followed by Melbourne (85) and Brisbane (34).

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 165 verified decision-maker contacts tracked across these 85 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 21, 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.