Post Office Limited
Data breach of Horizon IT scandal victims' personal information
Healthcare Data Breaches (346146 indexed)
Marquis Software Solutions
Unauthorized access to 788,000 financial records of bank and credit union customers
Leroy Merlin France
Loyalty program data breach affecting customers, disclosed December 3, 2025
SK Telecom
Massive data leak affecting users; consumer agency ordered $67 compensation per user
Illuminate Education
Data breach affecting Wisconsin-based edtech company, settled with FTC
SK Telecom
Massive data leak affecting users; consumer agency ordered company to pay $67 per user in compensation
KT Corporation
Telecommunications company customer data breach resulted in KRW 53.979 billion fine from South Korea regulators
Post Office Limited
Data breach affecting Horizon IT scandal victims, reprimanded by ICO as entirely preventable
SK Telecom
Massive data leak; ordered to pay $67 per user in compensation by consumer agency
Illuminate Education
Data breach leading to FTC settlement and security program implementation
Marquis Software Solutions
Ransomware attack exposed 788,000 financial records and banking customer data from US banks and credit unions
Post Office Limited
Data breach exposed names of victims from Horizon IT scandal; preventable breach resulted in ICO reprimand
Canada Life
5.5 million records allegedly exposed via Salesforce; threat actor claimed to sell data
Post Office Limited
Accidental publishing of data about Horizon IT scandal victims, including names of wrongfully convicted operators
700Credit
Car dealership services provider data breach affecting approximately 10 million individuals
North Carolina Ports Authority
Cyberattack disrupted IT systems and operations at Port of Wilmington; systems being restored
Post Office
Accidental publishing of data about wrongfully convicted operators caught up in Horizon IT scandal
700Credit
Data breach affecting approximately 10 million individuals with financial and personal information
Leroy Merlin France
Loyalty program data breach affecting customers; disclosed December 3, 2025
Marquis (Fintech)
Ransomware attack stole banking customer data including personal information and financial records from dozens of US banks
700Credit
Data breach affecting approximately 10 million individuals with car dealership customer data
Post Office Limited
Preventable data breach exposed names of wrongfully convicted Horizon IT scandal victims
Post Office Limited
Data breach exposed names of Horizon IT scandal victims in entirely preventable incident
700Credit
Car dealership services provider data breach affecting approximately 10 million individuals with sensitive information