Mexican Government (9 agencies)
Hackers exploited AI tools (Claude Code, ChatGPT) to breach 9 Mexican federal government agencies between Dec 2025-Feb 2026.
Education Sector Data Breaches (346146 indexed)
Post Office Limited
Data breach exposed names of wrongfully convicted Horizon IT scandal victims; ICO reprimand issued
Post Office Limited
Data breach affecting Horizon IT scandal victims; reprimanded by ICO for 'entirely preventable' breach
Marquis
Ransomware attack resulted in breach exposing banking customer data with personal and financial records
700Credit
Data breach affecting portion of ~20 million records in car dealership services
Post Office Limited
Data breach exposed names of Horizon IT scandal victims, preventable incident
KT Corporation
Customer data breach at South Korean telecommunications giant, fined $39 million
Marquis
Ransomware attack stole banking customer data with personal information and financial records
Marquis (Fintech)
Ransomware attack exposed banking customer data including personal information and financial records
Marquis Software Solutions
Unauthorized access to sensitive data of 788K customers of banks and credit unions
Marquis
Ransomware attack stole banking customer data including personal information and financial records from dozens of US banks
Post Office Limited
Preventable data breach affecting Horizon IT scandal victims
Prosper Marketplace
Data breach affecting approximately 10 million individuals at fintech company
Network breach
Network breach exposed sensitive healthcare data affecting 1.26 million people
SK Telecom
Massive data leak affecting users; ordered to pay $67 per user compensation
Leroy Merlin France
Loyalty program data breach affecting customers disclosed on December 3, 2025
Marquis Software Solutions
Data breach of 788,000 financial records from customers of banks and credit unions
KT Corporation
Customer data breach resulting in $39 million fine from South Korea's PIPC
Marquis Software Solutions
Ransomware attack exposing 788,000 financial records from banks and credit unions; customer PII and financial data stolen
Home Depot
Leaked private GitHub token provided write permissions to private repositories and internal systems for approximately one year
Post Office Limited
Data breach affecting Horizon IT scandal victims; reprimanded by ICO for preventable breach
Illuminate Education
Data breach leading to FTC settlement and mandatory data security program implementation
Leroy Merlin France
French home improvement retailer loyalty program data breach affecting customers
Marquis
Ransomware attack stole banking customer data including personal information and financial records from US banks