Company lists · Data refreshed September 2026

Top 25 Managed cybersecurity services based in Melbourne, Australia

Name: Managed cybersecurity services 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 145 companies tracked

RevenueBase identified 145 managed cybersecurity services headquartered in Melbourne, Australia as of September 2026 and tracks 2,272 professional contacts across them, including 1,093 with verified work emails. Sydney is the largest hub.

This list covers managed cybersecurity services 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

145Companies

2,272Contacts tracked

1,093Verified emails

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The 25 largest managed cybersecurity services based in Melbourne, Australia

Ranked by team size

Top 25 of 145 managed cybersecurity services 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 managed cybersecurity services: 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	Triskele Labs	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Skillfield	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
3	Dimiya Tech	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	50 contacts →
	Partial evidence “DIMIYA Tech is a Melbourne, Australia based- global Cybersecurity and IT services provider supporting organizations that require secure, scalable, and high-performance technology…” Source: RevenueBase Database · checked Sep 21, 2026
4	Wipro Shelde	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
5	Affinity MSP	Strong evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	38 contacts →
	Strong evidence “Affinity MSP is consistently recognised among the best MSPs in Australia, delivering Managed IT Support, cybersecurity, and cloud services to businesses nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
6	Blubiz Solutions	Strong evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	28 contacts →
	Strong evidence “Welcome to BluBiz Solutions, an award-winning ICT Solutions and Managed Services provider with multi-domain expertise in Enterprise Networking, Cybersecurity, Cloud…” Source: RevenueBase Database · checked Sep 21, 2026
7	Borderless CS	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial 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 21, 2026
8	Fortian	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial evidence “Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Source: RevenueBase Database · checked Sep 21, 2026
9	Tanto Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “We provide offensive cyber security services to world leading organisations.” Source: RevenueBase Database · checked Sep 21, 2026
10	Cybersecon	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “CyberSecOn is an Information security company with a presence in Australia, USA and India.” Source: RevenueBase Database · checked Sep 21, 2026
11	Phronesis Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “The ancient Greeks called using knowledge to achieve a practical good 'phronesis', or φρόνησῐς.” Source: RevenueBase Database · checked Sep 21, 2026
12	Tesserent Cyber Solutions By Thales	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	17 contacts →
	Partial evidence “Tesserent provides enterprise-grade, tailored cybersecurity solutions to mid sized and enterprise level organisations across all industries and all levels of government in…” Source: RevenueBase Database · checked Sep 21, 2026
13	Tekspace	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “We use our hands-on, independent research to match you with the cybersecurity solution that will best achieve your goals.” Source: RevenueBase Database · checked Sep 21, 2026
14	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
15	Helpdesk Computer Systems	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	13 contacts →
	Partial evidence “Helpdesk was founded in 2008 to provide innovative and cost-effective management of IT systems for SMEs across Australia.” Source: RevenueBase Database · checked Sep 21, 2026
16	Forensic IT	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Forensic IT is a specialised cyber security firm with expertise in Digital Forensics and Incident Response (DFIR), and securing Industrial Control Systems (CIS).” Source: RevenueBase Database · checked Sep 21, 2026
17	Secured Enterprise	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	12 contacts →
	Indirect 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
18	MSP Blueshift PTY LTD	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “At MSP Blueshift, we’ve been helping small to medium-sized enterprises (SMEs) transform their IT landscape since 2010.” Source: RevenueBase Database · checked Sep 21, 2026
19	Cynch Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	10 contacts →
	Partial evidence “We are passionate about building a world where every business is resilient to cybersecurity risks, no matter what their size.” Source: RevenueBase Database · checked Sep 21, 2026
20	Built On IT	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	9 contacts →
	Partial evidence “Managed technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026
21	Myempire Group	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “We’re a team of seasoned Cyber Security Specialists operating in Australia and the UK who help scaling businesses mature their cyber security.” Source: RevenueBase Database · checked Sep 21, 2026
22	Siax Computing Solutions PTY LTD	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Established in 1985 in Melbourne, Victoria - SIAX began as a ‘break-fix’ IT services company, servicing small businesses and home network environments leveraging partnerships to…” Source: RevenueBase Database · checked Sep 21, 2026
23	Security Impossible	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “Cyber Range, SOC designing and implementation, risk and security assessment.” Source: RevenueBase Database · checked Sep 21, 2026
24	Nerds On Time	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Nerds On Time is a results-based Technology Company that helps businesses understand and use today’s technology.” Source: RevenueBase Database · checked Sep 21, 2026
25	Shadowlens	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect 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

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 cybersecurity services. 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 cybersecurity services.
Partial evidence: Its own public description names part of managed cybersecurity services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name managed cybersecurity services. 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 145 managed cybersecurity services based in Melbourne, Australia

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Managed cybersecurity services based in Melbourne, Australia at a glance

As of Sep 21, 2026

48.1%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

113.1%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 145 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 managed cybersecurity services, 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 “managed cybersecurity services”. 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 cybersecurity services), 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 cybersecurity services, 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, 1,093 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.

Managed cybersecurity services by metro in Australia

Managed cybersecurity services in Sydney164
Managed cybersecurity services in Melbourne145
Managed cybersecurity services in Brisbane57
Managed cybersecurity services in Perth41
Managed cybersecurity services in Canberra31

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 cybersecurity services, 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 cybersecurity services are there based in Melbourne, Australia?

RevenueBase identified 145 managed cybersecurity services 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?

Triskele Labs, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most managed cybersecurity services?

Sydney leads with 164 headquartered companies, followed by Melbourne (145) and Brisbane (57).

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 1,093 verified decision-maker contacts tracked across these 145 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.