Company lists · Data refreshed September 2026

Top 25 Security consulting companies based in Australia

RevenueBase identified 553 security consulting companies headquartered in Australia as of September 2026 and tracks 4,293 professional contacts across them, including 1,532 with verified work emails and 204 with mobile numbers. Melbourne is the largest hub.

This list covers security consulting 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, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
553Companies
4,293Contacts tracked
1,532Verified emails
204Mobile numbers
Explore all 553 companies → Free signup · no credit card · 500 free credits

The 25 largest security consulting companies based in Australia

Ranked by team size
Top 25 of 553 security consulting companies based in Australia, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security consulting companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Securitas AustraliaPartial evidence
Preston, AustraliaHQ checked Sep 6, 202610001+228

“We know how to offer the most effective security to our customers.”

Source: company website · checked Sep 6, 2026
2
ADT Security AustraliaIndirect evidence
Rydalmere, AustraliaHQ checked Sep 6, 2026501-1,000178

“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.”

Source: company website · checked Sep 6, 2026
3Bella Vista, AustraliaHQ checked Sep 6, 202651-200170

“Ensuring your business is handling cyber security risks effectively has never been more important.”

Source: company website · checked Sep 6, 2026
4
Triskele LabsIndirect evidence
Melbourne, AustraliaHQ checked Sep 6, 202651-200123

“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.”

Source: company website · checked Sep 6, 2026
5
ARA SecurityPartial evidence
Kingsgrove, AustraliaHQ checked Sep 6, 2026201-500101

“ARA Security delivers turnkey security solutions to a number of industries across Australia.”

Source: company website · checked Sep 6, 2026
6
ISECPartial evidence
Alexandria, AustraliaHQ checked Sep 6, 2026201-50087

“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: company website · checked Sep 6, 2026
7South Melbourne, AustraliaHQ checked Sep 6, 20261,001-5,00082

“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: company website · checked Sep 6, 2026
8
SkillfieldPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 202651-20062

“Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.”

Source: company website · checked Sep 6, 2026
9
Exec SecurityPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 2026501-1,00059

“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: company website · checked Sep 6, 2026
10
Ipsec PTY LTDPartial evidence
Cremorne, AustraliaHQ checked Sep 6, 202611-5057

“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, 2026
11Melbourne, AustraliaHQ checked Sep 6, 202651-20052

“SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…”

Source: company website · checked Sep 6, 2026
12
Vibrant ServicesIndirect evidence
Coburg North, AustraliaHQ checked Sep 6, 2026201-50051

“Welcome to Vibrant Services.”

Source: company website · checked Sep 6, 2026
13
Reddawn Australia PTY LTDPartial evidence
Sydney Olympic Park, AustraliaHQ checked Sep 6, 2026201-50048

“Reddawn provides industry leading, comprehensive Security and Risk Management solutions for both corporate and commercial.”

Source: company website · checked Sep 6, 2026
14
VectraStrong evidence
Adelaide, AustraliaHQ checked Sep 6, 202651-20042

“Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.”

Source: company website · checked Sep 6, 2026
15
Seccom GlobalPartial evidence
Sydney, AustraliaHQ checked Sep 6, 202611-5041

“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, 2026
16
Austagencies PTY LTDIndirect evidence
North Sydney, AustraliaHQ checked Sep 6, 202651-20040

“We are specialist industry specialists.”

Source: company website · checked Sep 6, 2026
17
IPP Consulting PTY LTDPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 202651-20037

SECURITY AND TECHNOLOGY EXPERTS ENGINEERING FOR A BETTER WORLD.”

Source: company website · checked Sep 6, 2026
18
H3c PlusPartial evidence
Bankstown, AustraliaHQ checked Sep 6, 202651-20034

“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: company website · checked Sep 6, 2026
19
Division 5Partial evidence
Brisbane, AustraliaHQ checked Sep 6, 202611-5032

“Division 5 is focused on building long-term relationships with our clients as their trusted cyber security advisor.”

Source: company website · checked Sep 6, 2026
20
The Security HUBPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 2026201-50029

“The Security Hub delivers a complete packaged security solution and a risk mitigation program to its clients.”

Source: company website · checked Sep 6, 2026
21
ANSICPartial evidence
Bowen Hills, AustraliaHQ checked Sep 6, 202651-20029

“ANSIC is an Australian-based security, investigation & risk management firm, with recognised global capabilities and affiliates.”

Source: company website · checked Sep 6, 2026
22
Borderless CSIndirect evidence
Melbourne, AustraliaHQ checked Sep 6, 202611-5026

“About Us - Australia’s leading cybersecurity specialist, delivering comprehensive protection by Australian-based consultants only-no offshore teams- 100% cybersecurity-focused…”

Source: company website · checked Sep 6, 2026
23
FortianPartial evidence
Melbourne, AustraliaHQ checked Sep 6, 202611-5025

“Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.”

Source: company website · checked Sep 6, 2026
24
GridwareIndirect evidence
Sydney, AustraliaHQ checked Sep 6, 202611-5025

“For most organisations in Australia, a data breach can be more than a PR disaster, it could be the final chapter.”

Source: company website · checked Sep 6, 2026
25
Group 1 SecurityIndirect evidence
Sydney, AustraliaHQ checked Sep 6, 2026201-50025

“FreeCall 1800 GROUP 1.”

Source: company website · checked Sep 6, 2026

Showing 25 of 553 security consulting companies based in Australia

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Security consulting companies based in Australia at a glance

As of Sep 6, 2026
1-10Median size (employees)
MelbourneLargest hub · 108 HQs
204Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
337
11-50
142
51-200
49
201-500
14
501-1,000
5
1,001-5,000
3
10001+
1

Verified emails by last verification

0–30
1,416
31–60
109
61–90
1
90–180
0
180+
6

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 consulting companies, 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 consulting companies”. 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 consulting 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 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, 1,532 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.

Frequently asked

How many security consulting companies are there based in Australia?

RevenueBase identified 553 security consulting 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 security consulting companies?

Melbourne leads with 108 headquartered companies, followed by Sydney (101) and Brisbane (41).

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 1,532 verified decision-maker contacts tracked across these 553 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.