Company lists · Data refreshed September 2026

Top 25 Cybersecurity for city infrastructure based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 131 companies tracked

RevenueBase identified 131 cybersecurity for city infrastructure headquartered in Australia as of September 2026 and tracks 1,642 professional contacts across them, including 547 with verified work emails and 61 with mobile numbers. Melbourne is the largest hub.

This list covers cybersecurity for city infrastructure 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

131Companies

1,642Contacts tracked

547Verified emails

61Mobile numbers

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The 25 largest cybersecurity for city infrastructure based in Australia

Ranked by team size

Top 25 of 131 cybersecurity for city infrastructure based in Australia, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity for city infrastructure: 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	PT Itsec Asia TBK	Partial evidence	Melbourne, Australia	201-500	387 contacts →
	Partial evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 1, 2026
2	Triskele Labs	Partial evidence	Melbourne, Australia	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 1, 2026
3	Secutec	Partial evidence	Sydney, Australia	51-200	102 contacts →
	Partial evidence “Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…” Source: RevenueBase Database · checked Sep 1, 2026
4	Northbridge Systems	Partial evidence	St Leonards, Australia	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 1, 2026
5	Ipsec PTY LTD	Indirect evidence	Cremorne, Australia	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 1, 2026
6	Wipro Shelde	Indirect evidence	Melbourne, Australia	51-200	50 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 1, 2026
7	Emerging IT	Indirect evidence	Mulgrave, Australia	51-200	45 contacts →
	Indirect evidence “Clarity in a complex world.” Source: RevenueBase Database · checked Sep 1, 2026
8	Sekuro Asia	Partial evidence	Brisbane, Australia	51-200	43 contacts →
	Partial evidence “Sekuro is a leading global cybersecurity provider that helps clients and partners strategically mitigate cyber risks and build resilient businesses.” Source: RevenueBase Database · checked Sep 1, 2026
9	Slipstream Cyber	Indirect evidence	St Leonards, Australia	11-50	42 contacts →
	Indirect evidence “Slipstream Cyber is a business of Interactive - Australia's leading technology solutions provider.” Source: RevenueBase Database · checked Sep 1, 2026
10	Softel Systems	Partial evidence	Melbourne, Australia	11-50	38 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 1, 2026
11	Cyberxcel	Partial evidence	Brisbane, Australia	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 1, 2026
12	NSB Cyber	Indirect evidence	Brisbane, Australia	11-50	30 contacts →
	Indirect evidence “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: RevenueBase Database · checked Sep 1, 2026
13	Datcom Cloud	Partial evidence	North Geelong, Australia	11-50	26 contacts →
	Partial evidence “Minimise the risk of a cybersecurity incident.” Source: RevenueBase Database · checked Sep 1, 2026
14	Surecity Networks	Partial evidence	South Melbourne, Australia	11-50	19 contacts →
	Partial evidence “SureCity Networks is an Australian Cybersecurity firm with offices in Melbourne, Sydney, Brisbane and the UK, trusted by enterprises globally.” Source: RevenueBase Database · checked Sep 1, 2026
15	Zynet PTY LTD	Indirect evidence	Tullamarine, Australia	11-50	17 contacts →
	Indirect evidence “Zynet is an Australian cyber security and IT services provider with more than 25 years of experience protecting organisations and keeping critical systems running.” Source: RevenueBase Database · checked Sep 1, 2026
16	Sinevis	Partial evidence	Australia	11-50	17 contacts →
	Partial evidence “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Source: RevenueBase Database · checked Sep 1, 2026
17	Sentaris	Indirect evidence	Sydney, Australia	11-50	14 contacts →
	Indirect evidence “Sentaris (a certified B Corporation) is an Australian security services provider specialising in cyber assurance and incident response services.” Source: RevenueBase Database · checked Sep 1, 2026
18	Spartans Security	Partial evidence	Cremorne, Australia	11-50	14 contacts →
	Partial evidence “Facing the Complexities of Cybersecurity?” Source: RevenueBase Database · checked Sep 1, 2026
19	Cleared	Indirect evidence	Canberra, Australia	11-50	11 contacts →
	Indirect evidence “Security simplified.” Source: RevenueBase Database · checked Sep 1, 2026
20	Cognitio Digital	Indirect evidence	Brisbane, Australia	11-50	11 contacts →
	Indirect evidence “At Cognitio Digital we don’t try to do it all, or be everything to everybody.” Source: RevenueBase Database · checked Sep 1, 2026
21	IT First Responder	Indirect evidence	Castle Hill, Australia	11-50	11 contacts →
	Indirect evidence “First responders.” Source: RevenueBase Database · checked Sep 1, 2026
22	Cyberhub Group	Indirect evidence	Sydney, Australia	11-50	9 contacts →
	Indirect evidence “CyberHub was established with the aim of making Cyber Security more available to companies of all sizes.” Source: RevenueBase Database · checked Sep 1, 2026
23	Cyber Ethos	Partial evidence	Queensland, Australia	1-10	9 contacts →
	Partial evidence “Overview: Cyber Ethos is a leading cybersecurity business based in Queensland, Australia, equipping businesses with unrivalled cybersecurity solutions.” Source: RevenueBase Database · checked Sep 1, 2026
24	Solis Security Australia	Indirect evidence	Bundall, Australia	11-50	8 contacts →
	Indirect evidence “Solis is a leading provider of managed cyber security services and cyber incident response.” Source: RevenueBase Database · checked Sep 1, 2026
25	Shadowsafe	Indirect evidence	Woolloongabba, Australia	1-10	8 contacts →
	Indirect evidence “ShadowSafe is a cyber security and IT services company based in Brisbane that protects Australian businesses from a wide range of digital threats including cyber attacks, data…” Source: RevenueBase Database · checked Sep 1, 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 for city infrastructure. 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 for city infrastructure.
Partial evidence: Its own public description names part of cybersecurity for city infrastructure, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity for city infrastructure. 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 131 cybersecurity for city infrastructure based in Australia

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Cybersecurity for city infrastructure based in Australia at a glance

As of Sep 1, 2026

33.3%Verified-email coverage

3.7%Mobile-number coverage

12.5Average contacts per company

1-10Median size (employees)

21.4%Largest-city concentration · Melbourne

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 for city infrastructure, 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 for city infrastructure”. 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 for city infrastructure), 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 for city infrastructure, 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, 547 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 1, 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 for city infrastructure by metro

Cybersecurity for city infrastructure in Melbourne28
Cybersecurity for city infrastructure in Sydney25

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 for city infrastructure, 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 for city infrastructure are there based in Australia?

RevenueBase identified 131 cybersecurity for city infrastructure 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?

PT Itsec Asia TBK, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most cybersecurity for city infrastructure?

Melbourne leads with 28 headquartered companies, followed by Sydney (25) and Brisbane (14).

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 547 verified decision-maker contacts tracked across these 131 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 1, 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.