Valve
European logistics partner data breach exposed Steam hardware customer data; hackers stole personal information
2025 Data Breaches (616 indexed)
Amgen
Hackers accessed cloud environment stealing patient health information and proprietary intellectual property data
Conduent Business Services
Data breach affected more than 62.2 million individuals
Framework
Hackers stole customer names and personal information
Conduent Business Services
62.2 million individuals affected in ransomware breach of government contractor
Network breach
Network breach exposed sensitive healthcare billing data affecting 1.26 million people
Stiiizy
380,000 consumers' personal information stolen from vendor
T-Mobile
Data breach affecting hundreds of thousands in Washington; violated state notification law
Hotel Industry (Otelier)
500K hotel guests' personal information exposed after Otelier platform breach
Revolut
75 million customer records allegedly exposed including credit card data and personal information
IEH Corporation
Military device manufacturer cyber incident disclosed to SEC affecting satellite/missile/fighter jet components
Exact Sciences/Abbott
Patient data from at-home diagnostic tests exposed; sensitive personal information compromised
Huntsville Hospital
Patient data compromised through third-party vendor breach, exposing health information
Klaviyo
Marketing tech platform inadvertently shared user sign-up information including passwords to advertisers
Otelier (Hotel Management)
500,000 hotel guests' personal information exposed
Metabase
Hackers exploited zero-day vulnerability to access connected databases
Abbott/Exact Sciences
Patient sensitive personal information exposed from at-home diagnostic tests
Centers Laboratory
540,000 patient records exposed in cyberattack by Worldleaks group
Coldcard
Hardware wallet data breach; over $100M worth of bitcoin theft linked to cyberattack
Marquis
Ransomware attack exposed names, addresses, card numbers and sensitive data from 672K individuals
SimonMed Imaging
Healthcare data breach from cyberattack exposing 1.27 million patient records
Otelier (Hotel Management Platform)
Breach exposed personal data on half a million hotel guests from major hotel chains
200 accounts compromised, possibly through SharePoint vulnerabilities in on-premises
200 accounts compromised, possibly through SharePoint vulnerabilities in on-premises Microsoft servers
Multiple water utilities
Cyberattacks on operational technology across at least 12 states, allegedly linked to Iran