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Top 25 Worst Companies in New Zealand

Identify the lowest-scoring most renowned companies in New Zealand. Understand where critical cyber risk exposure exists in this country. 113 companies scored.

243
Companies in New Zealand
113
Scored
757.3
Avg Score
10
Cyber Incidents
Bottom 25
Shown

New Zealand Cybersecurity Risk Assessment - Lowest-Scoring Companies in 2026

Out of 243 companies in New Zealand monitored by Rankiteo, this page highlights the Bottom 25 organizations with the weakest cybersecurity posture. These rankings are based on our proprietary Cyber Resilience Score, which integrates time-decayed incident exposure, sector-sensitive impact analysis, and market-cap-aware baseline and dampening to produce a single, interpretable score between 100 and 1,000.

Companies at the bottom of this ranking carry the heaviest accumulated cyber incident burden - including recent or severe ransomware attacks, data breaches with significant financial losses or records exposed, and repeated disclosure events. Understanding where these risk concentrations exist is essential for supply chain risk management, regulatory compliance, and competitive benchmarking within New Zealand.

The current average score for the most notable companies in New Zealand is 757.3 out of 1,000. Companies shown below score significantly lower than this average, falling far behind a country that generally maintains reasonable security standards.

Risk Highlights

752
Lowest Score
757.3
Country Average
2%
Scoring B or Below
10
Recorded Incidents

Score Distribution

Aaa
0 (0.0%)
Aa
0 (0.0%)
A
0 (0.0%)
Baa
95 (84.1%)
Ba
16 (14.2%)
B
2 (1.8%)
Caa
0 (0.0%)
Ca
0 (0.0%)
C
0 (0.0%)
#CompanyLabelScoreBandIncidentsScore Bar
1
MediaWorks NZmediaworks.co.nz
Broadcasting (except Internet)656B1
2
KiwiRailkiwirail.co.nz
Others691B1
3
Auckland Transportgovt.nz
Public Administration704Ba1
4
Kordiakordia.co.nz
Telecommunications718Ba1
5
Health New Zealand | Te Whatu Oragovt.nz
Health Care and Social Assistance722Ba0
6
Department of Conservation (DOC)govt.nz
Public Administration731Ba1
7
Ministry of Justice - New Zealandgovt.nz
Public Administration731Ba1
8
NZ Policegovt.nz
Police Protection736Ba1
9
Ministry of Health New Zealandgovt.nz
Public Administration739Ba1
10
Reserve Bank of New Zealandgovt.nz
Commercial Banking739Ba1
11
SCOTTscottautomation.com
Others742Ba0
12
Ministry for Pacific Peoplesgovt.nz
Executive, Legislative, and Other General Government Support744Ba0
13
Synlait Milk Limitedsynlait.com
Food Manufacturing744Ba0
14
nzmpnzmp.com
Dairy Product Manufacturing745Ba0
15
Rakonrakon.com
Electrical Equipment, Appliance, and Component Manufacturing745Ba0
16
Daifuku Oceaniadaifukuocil.com
Others747Ba0
17
NZ Super Fundnzsuperfund.nz
Other Financial Investment Activities748Ba0
18
New Zealand Steelnzsteel.co.nz
Lumber and Other Construction Materials Merchant Wholesalers749Ba0
19
ANZ Aotearoaanz.co.nz
Commercial Banking750Baa0
20
The Building Intelligence Grouptbig.co.nz
Construction751Baa0
21
Z Energy NZz.co.nz
Oil and Gas Extraction751Baa0
22
Christchurch International Airport Limitedchristchurchairport.co.nz
Air Transportation752Baa0
23
Cook Brothers Construction (CBC)cookbrothers.co.nz
Construction752Baa0
24
Dominion Constructors Ltdconstructors.co.nz
-752Baa0
25
LT McGuinness Ltd.ltmcguinness.co.nz
-752Baa0

How Cyber Risk Scores Are Calculated

Rankiteo's Cyber Resilience Score produces a single value between 100 and 1,000 for each organization, where higher scores indicate lower estimated cyber risk. The framework integrates three principal components that together balance evidence, context, and comparability across industries and company sizes. Learn more in our AI Cyber Score methodology.

Understanding the Risk Bands

Each score maps to a letter-grade band. Companies appearing in this lowest-scoring ranking typically fall in the bottom bands:

  • Aaa (900-1,000): Exceptional cyber resilience - very few companies in a worst list reach this level.
  • Aa (800-899): Very strong security posture with minimal weaknesses.
  • A (700-799): Strong practices with some areas for improvement.
  • Baa (600-699): Adequate protection but notable security configuration gaps exist.
  • Ba (500-599): Below average - multiple risk areas require attention.
  • B (400-499): Weak security with significant exposure across categories.
  • Caa (300-399): Very weak with a high probability of exploitable vulnerabilities.
  • Ca (200-299): Critically poor with severe, widespread security gaps.
  • C (0-199): Extreme risk - immediate remediation is needed across all dimensions.

Why Monitoring Low-Scoring Companies in New Zealand Matters

Cybersecurity risk doesn't exist in isolation. If your organization works with, purchases from, or shares data with companies in New Zealand, their security weaknesses become your risk. Supply chain attacks - where adversaries compromise a less-secure vendor to reach a larger target - have become one of the most common and damaging attack vectors in recent years.

Rankiteo continuously monitors 243 companies in New Zealand, keeping these rankings up to date so you always have an accurate, current picture of the country's risk landscape.