Post Office Limited
Data breach affecting Horizon IT scandal victims resulted in ICO reprimand for preventable exposure
Retail & E-Commerce Data Breaches (354480 indexed)
Leroy Merlin France
Loyalty program data breach exposing customer personal and payment information
Post Office Limited
Data breach affecting Horizon IT scandal victims resulted in entirely preventable exposure; ICO issued reprimand
Illuminate Education
Data breach leading to FTC settlement and security program implementation
Multiple Sources (Credential Compilation)
2 billion emails and 1.2 billion passwords compromised in massive data compilation
Marquis Software Solutions
788,000 financial records of bank and credit union customers compromised
Marquis Software Solutions
Ransomware attack exposed 788K financial records of banks and credit union customers
Marquis Software Solutions
Unauthorized access to sensitive data of 788K customers of banks and credit unions
Marquis Software Solutions
Unauthorized access to sensitive information of 788,000 bank and credit union customers
Prosper Marketplace
Fintech company data breach affecting approximately 10 million users
700Credit
Data breach affecting approximately 10M car dealership services customers with personal information
Marquis Software Solutions
Ransomware attack exposed 788,000 financial records of bank customers
Illuminate Education
Data breach affecting edtech company, settled with FTC
Leroy Merlin France
Loyalty program data breach disclosed, affecting customers' personal information
Marquis Software Solutions
Ransomware attack exposed 788,000 financial records and banking customer data from US banks and credit unions
Prosper Marketplace
Data breach affecting approximately 10 million individuals in fintech company
Prosper Marketplace
One of seven largest banking data breaches of 2025
700Credit
Car dealership services provider data breach affecting nearly 20M individuals
SK Telecom
Massive data leak exposed customer information, regulatory order required compensation of $67 per user
Post Office Limited
Data breach of Horizon IT scandal victims; entirely preventable; ICO reprimand issued
TriZetto Provider Solutions
PHI of 3.4 million individuals exposed through unauthorized IT access
700Credit
Car dealership services data breach affecting personal and financial information
Post Office Limited
Data breach resulting in exposure of Horizon IT scandal victims' personal information
Leroy Merlin France
Data breach affecting loyalty program customers disclosed December 2025