Company lists · Data refreshed September 2026

Top 19 Ics security companies based in New Zealand

RevenueBase identified 33 ics security companies headquartered in New Zealand as of September 2026 and tracks 501 professional contacts across them, including 260 with verified work emails and 9 with mobile numbers. Auckland is the largest hub.

This list covers ics security companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 3, 2026 86% judged on-target in blind review
33Companies
501Contacts tracked
260Verified emails
9Mobile numbers
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The 19 largest ics security companies based in New Zealand

Ranked by team size
Top 19 of 33 ics security companies based in New Zealand, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names ics security 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
DefendPartial evidence
Auckland, New ZealandHQ checked Sep 3, 202651-200119

“DEFEND are an independent agnostic cyber security partner.”

Source: company website · checked Sep 3, 2026
2
Bastion Security GroupPartial evidence
Wellington, New ZealandHQ checked Sep 3, 202651-20093

“Bastion Security combines the skills, expertise and leadership from Quantum Security, ZX Security, Helix Security, Cassini and now Cythera.”

Source: company website · checked Sep 3, 2026
3
Matrix Security GroupPartial evidence
Auckland, New ZealandHQ checked Sep 3, 2026201-50076

“Matrix Security Group is a 100% New Zealand owned company that is a well-established, credible and professional security company.”

Source: company website · checked Sep 3, 2026
4
SGS ECLIndirect evidence
New Plymouth, New ZealandHQ checked Sep 3, 202611-5039

“SGS ECL is a PROCESS AUTOMATION, FUNCTIONAL SAFETY & INDUSTRIAL CYBER consultancy, who primarily service the Australasian energy and process industries.”

Source: company website · checked Sep 3, 2026
5
ADT Security NEW ZealandPartial evidence
Auckland, New ZealandHQ checked Sep 3, 202651-20037

“ADT Security has made it our business to help safeguard people, property and possessions.”

Source: company website · checked Sep 3, 2026
6
IQ Security LimitedPartial evidence
Auckland, New ZealandHQ checked Sep 3, 202611-5016

“IQ SECURITY is New Zealand's most trusted security integrator of Alarms, CCTV, Access Control Systems, Monitoring and Maintenance services for your businesses, schools…”

Source: company website · checked Sep 3, 2026
7
NextroPartial evidence
New ZealandHQ checked Sep 3, 202611-5014

“Nextro is a cyber, physical, & electronic security systems provider, as well as an ISP/MSSP.”

Source: company website · checked Sep 3, 2026
8
Optimatech LimitedPartial evidence
Auckland, New ZealandHQ checked Sep 3, 202611-5014

“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: company website · checked Sep 3, 2026
9Wellington, New ZealandHQ checked Sep 3, 202611-5012
Source: company website · checked Sep 3, 2026
10
Fenrir SecurityPartial evidence
Christchurch, New ZealandHQ checked Sep 3, 20261-107

“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: company website · checked Sep 3, 2026
11
Diode SecurityPartial evidence
Wellington, New ZealandHQ checked Sep 3, 20261-106

“Diode is an NZ based security company built on passion for technology and drive to secure customers environments.”

Source: company website · checked Sep 3, 2026
12
Plural CyberPartial evidence
Auckland, New ZealandHQ checked Sep 3, 20261-106

“A team of cyber security experts, helping businesses build cyber resilience and manage their cyber security risk.”

Source: company website · checked Sep 3, 2026
13
Outfox LimitedIndirect evidence
Paraparaumu, New ZealandHQ checked Sep 3, 20261-105

“Outfox has a single mission to make businesses more cyber resilient - fully prepared to detect, respond and most importantly recover from cyber-attacks.”

Source: company website · checked Sep 3, 2026
14
Govern CybersecurityIndirect evidence
Havelock North, New ZealandHQ checked Sep 3, 20261-103
Source: company website · checked Sep 3, 2026
15
Cipher SecurityPartial evidence
Auckland, New ZealandHQ checked Sep 3, 202611-502

“We help protect your business by implementing right-sized security solutions tailored to your organisation, no matter its size.”

Source: company website · checked Sep 3, 2026
16
CybercoPartial evidence
Wellington, New ZealandHQ checked Sep 3, 20261-102

“CyberCo provides a comprehensive range of cyber security and IT services that will keep your business data secure.”

Source: company website · checked Sep 3, 2026
17
Division ZeroIndirect evidence
Wellington, New ZealandHQ checked Sep 3, 20261-102

“Division Zero (Ltd) delivers cybersecurity testing and consulting services.”

Source: company website · checked Sep 3, 2026
18
Security Concepts LTDIndirect evidence
Auckland, New ZealandHQ checked Sep 3, 20261-102
Source: company website · checked Sep 3, 2026
19
Trust HoundIndirect evidence
Wellington, New ZealandHQ checked Sep 3, 20261-101

“Navigating cybersecurity doesn't have to be complex.”

Source: company website · checked Sep 3, 2026

Showing 19 of 33 ics security companies based in New Zealand

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Ics security companies based in New Zealand at a glance

As of Sep 3, 2026
1-10Median size (employees)
AucklandLargest hub · 15 HQs
9Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
21
11-50
8
51-200
3
201-500
1

Verified emails by last verification

0–30
0
31–60
31
61–90
134
90–180
95
180+
0

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 ics security 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 New Zealand whose own description of what they do matches “ics security 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 ics security companies, 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 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, 260 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 3, 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 ics security companies are there based in New Zealand?

RevenueBase identified 33 ics security companies 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 ics security companies?

Auckland leads with 15 headquartered companies, followed by Wellington (8) and Christchurch (3).

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 260 verified decision-maker contacts tracked across these 33 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 3, 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.