Otelier (Hotel Chains)
500,000 hotel guests' personal information exposed after threat actor breach of hotel management platform
2025 Data Breaches (574 indexed)
FirstClass
Customer records of Sydney-based travel agency allegedly breached by threat actor
Exact Sciences/Abbott
Patient data from at-home diagnostic tests exposed; sensitive personal information compromised
Partnered Health
Personal information and medical details breached across 21 clinics in Australian healthcare cyberattack
Cerner
Hackers accessed electronic health records stored on legacy network in January breach
Centers Laboratory
540,000 patient records exposed in cyberattack by Worldleaks group
Abbott/Exact Sciences
Patient sensitive personal information exposed from at-home diagnostic tests
KT Corp
South Korea telecom giant hit with substantial fine for data breach by Personal Information Protection Commission
IEH Corporation
Military device manufacturer cyber incident disclosed to SEC affecting satellite/missile/fighter jet components
Revolut
75 million customer records allegedly exposed including credit card data and personal information
Tribeca Film Festival
Unprotected database exposed 666,000 records with celebrity contact information, no encryption
Stiiizy
380,000 consumers' personal information stolen from vendor
T-Mobile
Data breach affecting hundreds of thousands in Washington; violated state notification law
Huntsville Hospital
Patient data compromised through third-party vendor breach, exposing health information
Hotel Industry (Otelier)
500K hotel guests' personal information exposed after Otelier platform breach
Klaviyo
Marketing tech platform inadvertently shared user sign-up information including passwords to advertisers
Conduent
62.2 million records exposed in third-largest US healthcare hack ever; 58% increase in breach notices 2026
Otelier (Hotel Management)
500,000 hotel guests' personal information exposed
KT Corporation
Customer data breach; South Korea fined telco $39 million for exposure
Framework
Hackers stole customer names and personal information
Żabka Polska
Data breach exposing 541,000 Jira issues and customer data from Polish convenience store chain
Water utilities (12 states)
Cyberattacks on operational technology across South Dakota, Georgia and 10 other states
Metabase
Hackers exploited zero-day vulnerability to access connected databases
Polish energy plant
Heat-and-power facility breached via private APN, supplies heat to ~50,000 residents