Marquis Software Solutions
Unauthorized access to sensitive information of 788,000 customers of banks and credit institutions
Education Sector Data Breaches (346147 indexed)
Marquis
Ransomware attack stole banking customer data including personal information and financial records
Post Office
Accidental publishing of data about people wrongfully convicted in Horizon IT scandal
Marquis Software Solutions
Ransomware attack exposed 788K financial records from banking customers including names, addresses, card numbers
Thailand Ministry of Finance
Hackers used autonomous AI agent for cyber-espionage campaign against finance ministry
Coupang
Data breach exposed personal information of 33.7 million customers
Marquis Software Solutions
Ransomware attack exposed 788,000 financial records of bank customers
700Credit
Car dealership services provider data breach affecting ~20M individuals
KT Corporation
South Korean telecommunications company fined $39 million for customer data breach
TransUnion
One of seven largest banking data breaches of 2025
Marquis
Ransomware attack resulted in theft of banking customer data with personal and financial records
700Credit
Car dealership services provider data breach affecting approximately 20 million individuals with financial records compromised
Marquis Software Solutions
Data breach exposing 788K financial records from bank and credit union customers
Prosper Marketplace
Data breach affecting approximately 10 million individuals in fintech company
Leroy Merlin France
Loyalty program data breach affecting customers, customer data exposed
Post Office Limited
Entirely preventable data breach exposed names of Horizon IT scandal victims caught up in wrongful convictions
Home Depot
Leaked GitHub credential exposed internal systems for over a year, providing write permissions to private repos
Amgen
Cloud data breach exposed patient health information and proprietary corporate data
Leroy Merlin France
Loyalty program data breach affecting customers on December 3, 2025
700Credit
Car dealership services provider data breach affecting approximately 10M individuals
Home Depot
Exposed access to internal systems including back-end GitHub source code repos for approximately one year
Mexican Government (9 agencies)
Multiple federal agencies compromised using Claude Code and ChatGPT, millions of records stolen
Leroy Merlin France
Loyalty program data breach affecting customers' personal and payment information
Post Office Limited
Data breach of Horizon IT scandal victims' information; ICO issued reprimand for entirely preventable breach