Company lists · Data refreshed September 2026
Top 25 Network security service providers based in New Zealand
RevenueBase identified 52 network security service providers headquartered in New Zealand as of September 2026 and tracks 508 professional contacts across them, including 308 with verified work emails. Auckland is the largest hub.
This list covers network security service providers headquartered in New Zealand, 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 14, 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.
The 25 largest network security service providers based in New Zealand
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 119 contacts → | ||||
Partial evidence “DEFEND are an independent agnostic cyber security partner.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 94 contacts → | ||||
Partial evidence “Bastion Security combines the skills, expertise and leadership from Quantum Security, ZX Security, Helix Security, Cassini and now Cythera.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 46 contacts → | ||||
Partial evidence “RedShield is the essential partner for businesses needing an effective security solution for application risks.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 23 contacts → | ||||
Partial evidence “We are a leading New Zealand based Managed Security Service Provider (MSSP) and security systems integrator.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 20 contacts → | ||||
Partial evidence “OUR MISSION: Is to play an active and valued role in the New Zealand Information and Cyber Security community.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 16 contacts → | ||||
Partial evidence “At Nectar, we partner with forward-thinking businesses to harness the power of technology in securing their future and driving business efficiency.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 14 contacts → | ||||
Partial evidence “OptimaTech is passionately committed to transforming businesses across New Zealand, Hong Kong and Asia Pacific by leveraging security-driven technology as the foundation for…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 13 contacts → | ||||
Partial evidence “Nextro is a cyber, physical, & electronic security systems provider, as well as an ISP/MSSP.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 13 contacts → | ||||
Partial evidence “We are a group of certified IT experts, highly specialised in world-class Network Cybersecurity solutions to improve your overall business performance by solving complex…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Partial evidence “Fenrir Security was founded with a rebellious spirt and an audacious goal: to provide technical excellence across cyber security services at an equitable price point while…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Indirect evidence “Work with us to protect your company quickly.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Partial evidence “Diode is an NZ based security company built on passion for technology and drive to secure customers environments.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 contacts → | ||||
Partial evidence “A team of cyber security experts, helping businesses build cyber resilience and manage their cyber security risk.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Outfox has a single mission to make businesses more cyber resilient - fully prepared to detect, respond and most importantly recover from cyber-attacks.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Partial evidence “- IT Security Specialists, known as has been servicing government and corporate clients in New Zealand and across the world for more than 30 years.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “Cybercraft is dedicated to helping small businesses and not-for-profits stay secure in a digital world.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Partial evidence “At Nova Security, we deliver top-tier cybersecurity services including Penetration Testing, Cloud Security Solutions, and Blockchain Security.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 contacts → | ||||
Indirect evidence “Cassini Limited is an Information Technology Consultancy based out of Wellington, New Zealand.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Partial evidence “We help protect your business by implementing right-sized security solutions tailored to your organisation, no matter its size.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Indirect evidence “ICT Solutions Provider Attention : Successful Business Owners, Managers and Professionals.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “We make complicated IT security easy for businesses so they can be sure they are protected and retain the trust of their clients.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Strong evidence “Core 73 is an Auckland based cybersecurity firm with over 20 years of experience on Network Security.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “CyberCo provides a comprehensive range of cyber security and IT services that will keep your business data secure.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Division Zero (Ltd) delivers cybersecurity testing and consulting services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “At MTCyber Limited, we are dedicated to fortifying the cybersecurity defenses of businesses, ensuring they navigate the digital landscape with confidence.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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: network security service providers. 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 network security service providers.
- Partial evidence
- Its own public description names part of network security service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name network security service providers. 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 52 network security service providers based in New Zealand
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Network security service providers based in New Zealand at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for New Zealand, so it is reported there. Company counts and contact totals on this page are exact for New Zealand, over 52 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 network security service providers, 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 New Zealand whose own description of what they do matches “network security service providers”. 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 network security service providers), 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 network security service providers, and records with no verified work email. Companies headquartered outside New Zealand 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, 308 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 14, 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
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 network security service providers, 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 network security service providers are there based in New Zealand?
RevenueBase identified 52 network security service providers headquartered in New Zealand 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?
Defend, headquartered in Auckland, tops this list with the largest team on record.
Which city has the most network security service providers?
Auckland leads with 23 headquartered companies, followed by Wellington (12) and Christchurch (4).
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 308 verified decision-maker contacts tracked across these 52 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 14, 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.
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