Australian Data Breach Guides
Expert, independent guides for major Australian data breaches. Find out what was exposed, check if you were affected, and learn what steps to take.
Origin Energy Data Breach 2026
July 2026Undisclosed recordsHigh Risk
Partnered Health Data Breach 2026
June 2026Undisclosed recordsHigh Risk
ACMI Data Breach 2026
June 2026~25,000 recordsHigh Risk
Melbourne Film Festival Data Breach 2026
May 2026~26,782 recordsHigh Risk
UWA Callista Student System Breach 2026
May 2026Undisclosed recordsMedium Risk
University of Sydney Data Breach 2025
December 2025~27,000 recordsHigh Risk
NYC Health + Hospitals Data Breach 2026
May 2026~1.8 million recordsCritical Risk
Australian Courts Data Breach 2026
February 2026Thousands of court files recordsCritical Risk
youX Data Breach 2026
February 2026~444,538 recordsHigh Risk
Prosura Data Breach 2026
January 2026300,000 to 500,000 recordsHigh Risk
Canvas (Instructure) Data Breach 2026
May 2026~275 million (claimed) recordsMedium Risk
Booking.com Data Breach 2026
April 2026Undisclosed recordsHigh Risk
McGraw Hill Data Breach 2026
April 2026~13.5 million recordsHigh Risk
Crunchyroll Data Breach 2026
April 2026Undisclosed recordsHigh Risk
Eurail Passport Data Leak 2026
April 2026~300,000+ recordsHigh Risk
Basic-Fit Data Breach 2026
April 2026~1 million recordsHigh Risk
Under Armour Everest Ransomware Breach 2025
November 2025~72 million recordsHigh Risk
Salesforce Vishing Campaign (ShinyHunters) 2025
August 2025~1 billion (aggregate) recordsHigh Risk
Allianz Life Salesforce Breach 2025
July 2025~2.8 million recordsHigh Risk
Workday Salesforce CRM Breach 2025
August 2025Undisclosed recordsMedium Risk
Western Sydney University SSO Breach 2025
February 2025~10,000 recordsHigh Risk
Genea Fertility IVF Breach 2025
February 2025~940,000 recordsHigh Risk
DeepSeek Exposed Database 2025
January 2025~1 million recordsMedium Risk
Tangerine Telecom Data Breach 2024
February 2024~232,000 recordsHigh Risk
Australian Clinical Labs / Medlab Breach 2022
July 2022~223,000 recordsHigh Risk
Qantas Data Breach 2025
June 2025~5.7 million recordsHigh Risk
Optus Data Breach 2022
September 2022~9.8 million recordsHigh Risk
Medibank Data Breach 2022
October 2022~9.7 million recordsHigh Risk
Latitude Financial Data Breach 2023
March 2023~14 million recordsHigh Risk
Woolworths MyDeal Data Breach 2022
October 2022~2.2 million recordsHigh Risk