Company lists · Data refreshed September 2026

Top 25 Cybersecurity companies for communications based in Australia

Name: Cybersecurity companies for communications based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 381 companies tracked

RevenueBase identified 381 cybersecurity companies for communications headquartered in Australia as of September 2026 and tracks 3,996 professional contacts across them, including 1,654 with verified work emails. Melbourne is the largest hub.

This list covers cybersecurity companies for communications 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

381Companies

3,996Contacts tracked

1,654Verified emails

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The 25 largest cybersecurity companies for communications based in Australia

Ranked by team size

Top 25 of 381 cybersecurity companies for communications 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 cybersecurity companies for communications: 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	Centorrino Technologies	Indirect evidence	Coburg, AustraliaHQ checked Sep 28, 2026	201-500	352 contacts →
	Indirect evidence “We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: RevenueBase Database · checked Sep 28, 2026
2	Triskele Labs	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 28, 2026
3	NEW ERA Technology AU	Indirect evidence	Mascot, AustraliaHQ checked Sep 28, 2026	501-1,000	111 contacts →
	Indirect evidence “New Era delivers Technology Solutions that securely connect people, places, and information in a rapidly changing digital world.” Source: RevenueBase Database · checked Sep 28, 2026
4	ARA Security	Indirect evidence	Kingsgrove, AustraliaHQ checked Sep 28, 2026	201-500	101 contacts →
	Indirect evidence “ARA Security delivers turnkey security solutions to a number of industries across Australia.” Source: RevenueBase Database · checked Sep 28, 2026
5	Informatech PTY LTD	Indirect evidence	Canberra, AustraliaHQ checked Sep 28, 2026	51-200	88 contacts →
	Indirect evidence “Informatech is a veteran led business and specialises in ICT within Defence.” Source: RevenueBase Database · checked Sep 28, 2026
6	Northbridge Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
7	C4i	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	59 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
8	Ipsec PTY LTD	Indirect evidence	Cremorne, AustraliaHQ checked Sep 28, 2026	11-50	57 contacts →
	Indirect 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 28, 2026
9	Security Consulting Group PTY LTD SCG	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 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 28, 2026
10	Deploypartners	Indirect evidence	North Sydney, AustraliaHQ checked Sep 28, 2026	51-200	51 contacts →
	Indirect evidence “DeployPartners offer unique values and benefits that enable our clients and partners to differentiate on customer service.” Source: RevenueBase Database · checked Sep 28, 2026
11	Dimiya Tech	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 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 28, 2026
12	Wipro Shelde	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 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 28, 2026
13	Emerging IT	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 28, 2026	51-200	46 contacts →
	Indirect evidence “Clarity in a complex world.” Source: RevenueBase Database · checked Sep 28, 2026
14	Firstwave ASX FCT	Partial evidence	North Sydney, AustraliaHQ checked Sep 28, 2026	51-200	42 contacts →
	Partial evidence “FirstWave is a global cybersecurity technology company formed in 2004.” Source: RevenueBase Database · checked Sep 28, 2026
15	Seccom Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	41 contacts →
	Indirect 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 28, 2026
16	Bluerydge	Partial evidence	Fyshwick, AustraliaHQ checked Sep 28, 2026	51-200	41 contacts →
	Partial evidence “Bluerydge delivers mission-secure capability, specialising in Cybersecurity, Technology, Artificial Intelligence (AI), and Robotics.” Source: RevenueBase Database · checked Sep 28, 2026
17	Softel Systems	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “With over 20 years in the security market for IT and Telecommunications networks, Softel has naturally migrated these skills into the Cybersecurity challenges of today.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ionize	Indirect evidence	Canberra, AustraliaHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: RevenueBase Database · checked Sep 28, 2026
19	Astralas	Indirect evidence	Cremorne, AustraliaHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “Good people solving important problems.” Source: RevenueBase Database · checked Sep 28, 2026
20	Netpoleon ANZ	Indirect evidence	Docklands, AustraliaHQ checked Sep 28, 2026	501-1,000	34 contacts →
	Indirect 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 28, 2026
21	NSB Cyber	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: RevenueBase Database · checked Sep 28, 2026
22	Cyberxcel	Partial evidence	Brisbane, AustraliaHQ checked Sep 28, 2026	n/a	33 contacts →
	Partial 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 28, 2026
23	Division 5	Indirect evidence	Brisbane, AustraliaHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “Division 5 is focused on building long-term relationships with our clients as their trusted cyber security advisor.” Source: RevenueBase Database · checked Sep 28, 2026
24	CSO Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “CSO Group provides ICT security services and solutions to protect Australian businesses from advanced cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
25	NUEVA	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “At Nueva, we aim to create a safer digital environment by providing innovative and customised cybersecurity solutions for our clients.” 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: cybersecurity companies for communications. 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 cybersecurity companies for communications.
Partial evidence: Its own public description names part of cybersecurity companies for communications, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity companies for communications. 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 381 cybersecurity companies for communications based in Australia

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Cybersecurity companies for communications based in Australia at a glance

As of Sep 28, 2026

41.4%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

19.9%Largest-city concentration · Melbourne

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

213

11-50

119

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 381 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 cybersecurity companies for communications, 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 “cybersecurity companies for communications”. 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 cybersecurity companies for communications), 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 cybersecurity companies for communications, 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, 1,654 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.

Cybersecurity companies for communications 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 cybersecurity companies for communications, 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 cybersecurity companies for communications are there based in Australia?

RevenueBase identified 381 cybersecurity companies for communications 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?

Centorrino Technologies, headquartered in Coburg, tops this list with the largest team on record.

Which city has the most cybersecurity companies for communications?

Melbourne leads with 76 headquartered companies, followed by Sydney (63) and Brisbane (30).

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 1,654 verified decision-maker contacts tracked across these 381 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.