Company lists · Data refreshed September 2026

Top 25 Software security consulting firms based in New Zealand

RevenueBase identified 47 software security consulting firms headquartered in New Zealand as of September 2026 and tracks 465 professional contacts across them, including 290 with verified work emails and 9 with mobile numbers. Wellington is the largest hub.

This list covers software security consulting firms 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 6, 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 6, 2026 86% judged on-target in blind review
47Companies
465Contacts tracked
290Verified emails
9Mobile numbers
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The 25 largest software security consulting firms based in New Zealand

Ranked by team size
Top 25 of 47 software security consulting firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software security consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAuckland, New ZealandHQ checked Sep 6, 202651-200119 contacts →

“DEFEND are an independent agnostic cyber security partner.”

Source: company website · checked Sep 6, 2026
2Partial evidenceWellington, New ZealandHQ checked Sep 6, 202651-20094 contacts →

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

Source: company website · checked Sep 6, 2026
3Partial evidenceWellington, New ZealandHQ checked Sep 6, 202651-20046 contacts →

“RedShield is the essential partner for businesses needing an effective security solution for application risks.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceWellington, New ZealandHQ checked Sep 6, 202611-5025 contacts →

“Virtually every business that conducts business online is at risk of compromise by hackers, malware and other information-related crimes.”

Source: company website · checked Sep 6, 2026
5Partial evidenceAuckland, New ZealandHQ checked Sep 6, 202611-5014 contacts →

“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 6, 2026
6Indirect evidenceWellington, New ZealandHQ checked Sep 6, 202611-5012 contacts →

“We're here to keep your data secure.”

Source: company website · checked Sep 6, 2026
7Partial evidenceWellington, New ZealandHQ checked Sep 6, 202611-5012 contacts →

“Layer 9 was founded by a team of specialists committed to delivering strategic value and passionate about organisational security.”

Source: company website · checked Sep 6, 2026
8Partial evidenceWellington, New ZealandHQ checked Sep 6, 20261-1011 contacts →

“CyberCure is a boutique cyber security and privacy consultancy based in Wellington, NZ.”

Source: company website · checked Sep 6, 2026
9Partial evidenceWellington, New ZealandHQ checked Sep 6, 20261-107 contacts →

“Established in 2017, Pulse Security is an independent New Zealand offensive security and DFIR consultancy providing quality cybersecurity services to clients both locally and…”

Source: company website · checked Sep 6, 2026
10Partial evidenceWellington, New ZealandHQ checked Sep 6, 202611-506 contacts →

“Quantum Security Services is a specialist, fully independent information security firm.”

Source: company website · checked Sep 6, 2026
11Partial evidenceWellington, New ZealandHQ checked Sep 6, 20261-105 contacts →

“Expert, highly independent penetration testing and security review services.”

Source: company website · checked Sep 6, 2026
12Partial evidenceChristchurch, New ZealandHQ checked Sep 6, 20261-105 contacts →

“Our mission is clear, to empower Kiwi businesses by fortifying their security posture through comprehensive IT Security Health Checks.”

Source: company website · checked Sep 6, 2026
13Partial evidenceCbd, New ZealandHQ checked Sep 6, 20261-104 contacts →

“ICARAS helps organisations protect their people, property, and reputation through independent, PSR-aligned security assurance.”

Source: company website · checked Sep 6, 2026
14Partial evidenceWellington, New ZealandHQ checked Sep 6, 202651-2004 contacts →

“- 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: company website · checked Sep 6, 2026
15Indirect evidenceWellington, New ZealandHQ checked Sep 6, 202611-503 contacts →

“Syntax21 are Microsoft Gold Partners who specialise in providing a complete suite of IT solutions, giving clients the confidence of a secure environment, and ensuring a great end…”

Source: company website · checked Sep 6, 2026
16Partial evidenceAuckland | Wellington | Wherever You Need Us, New ZealandHQ checked Sep 6, 20261-103 contacts →

“We’re people people, delivering security solutions tailored to your company, whether you’re a fully specced security outfit or just starting on your security journey.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceWellington, New ZealandHQ checked Sep 6, 20261-102 contacts →

“Cassini Limited is an Information Technology Consultancy based out of Wellington, New Zealand.”

Source: company website · checked Sep 6, 2026
18Indirect evidenceWellington, New ZealandHQ checked Sep 6, 20261-102 contacts →

“Whether you’re starting from scratch, looking to expand, or just want to make sure your systems are protected, we can help.”

Source: company website · checked Sep 6, 2026
19Partial evidenceAuckland, New ZealandHQ checked Sep 6, 202611-502 contacts →

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

Source: company website · checked Sep 6, 2026
20Partial evidenceWhangarei, New ZealandHQ checked Sep 6, 20261-102 contacts →

“We are a driven and dedicated team of professionals with a broad and in-depth understanding within the Information Technology, Information Security, Utility and Telecommunications…”

Source: company website · checked Sep 6, 2026
21Partial evidenceAuckland, New ZealandHQ checked Sep 6, 20261-102 contacts →

“We make complicated IT security easy for businesses so they can be sure they are protected and retain the trust of their clients.”

Source: company website · checked Sep 6, 2026
22Partial evidenceAuckland, New ZealandHQ checked Sep 6, 20261-102 contacts →

“Core 73 is an Auckland based cybersecurity firm with over 20 years of experience on Network Security.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceAuckland, New ZealandHQ checked Sep 6, 20261-102 contacts →

“At MTCyber Limited, we are dedicated to fortifying the cybersecurity defenses of businesses, ensuring they navigate the digital landscape with confidence.”

Source: company website · checked Sep 6, 2026
24Partial evidenceWellington, New ZealandHQ checked Sep 6, 20261-102 contacts →

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

Source: company website · checked Sep 6, 2026
25Indirect evidenceWellington, New ZealandHQ checked Sep 6, 20261-101 contacts →

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

Source: company website · checked Sep 6, 2026

Showing 25 of 47 software security consulting firms based in New Zealand

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Software security consulting firms based in New Zealand at a glance

As of Sep 6, 2026
62.4%Verified-email coverage
1.9%Mobile-number coverage
9.9Average contacts per company
1-10Median size (employees)
42.6%Largest-city concentration · Wellington
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
12
51-200
6

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 software security consulting firms, 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 “software security consulting firms”. 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 software security consulting firms), 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 software security consulting firms, 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, 290 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 6, 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 software security consulting firms, 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 software security consulting firms are there based in New Zealand?

RevenueBase identified 47 software security consulting firms 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 software security consulting firms?

Wellington leads with 20 headquartered companies, followed by Auckland (17) 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 290 verified decision-maker contacts tracked across these 47 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 6, 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.