The register holds 12 data breaches that happened in 2025 — down from 14 in 2024.
12records
6.1M+people affected
where disclosed (4 of 12)
where disclosed (4 of 12)
2 · 10🇳🇿 NZ · 🇦🇺 AU
3confirmed by a regulator or court
The biggest
Largest by people affected, where a figure has been disclosed.
Sectors
🗂️ Other led the year with 3 records.
🗂️ Other3🏥 Healthcare2🏛️ Government2📡 Telco1🎓 Education1💳 Finance1🛍️ Retail1🖥️ Technology1Month by month
When the breaches happened.
J
F
M
A
M
J
J
A
S
O
N
D
Every 2025 record
🇳🇿 NeighbourlyTechnology · 2025-12 · Tier B🇦🇺 University of SydneyEducation · 2025-12 · Tier B🇳🇿 Manage My HealthHealthcare · 2025-12 · Tier A🇦🇺 Victorian Department of EducationGovernment · 2025-11 · Tier A🇦🇺 iiNet (TPG Telecom)Telco · 2025-08 · Tier B🇦🇺 Metricon HomesOther · 2025-07 · Tier B🇦🇺 QantasOther · 2025-06-28 · Tier A🇦🇺 Sydney ToolsRetail · 2025-03 · Tier B🇦🇺 Australian superannuation funds (coordinated attack)Finance · 2025-03 · Tier B🇦🇺 The Fullerton Hotel SydneyOther · 2025-03 · Tier B🇦🇺 Australian Human Rights CommissionGovernment · 2025-03 · Tier B🇦🇺 Genea FertilityHealthcare · 2025-01 · Tier B
Counts reflect the records in this register, not every breach that happened — most breaches are never made public. People-affected totals add disclosed figures only and may overlap.