Ernst & Young (EY)
Third-party vendor breach exposed sensitive tax client data after 81-day notification delay
Healthcare Data Breaches (10960 indexed)
Heart South Cardiovascular Group
Data breach exposed personal and health records of 46,666 patients
Gaming Accounts
Over 11 million gaming account credentials exposed in 2024 data leaks discovered by Kaspersky DFI
Instructure
Supply chain breach involving Canvas platform generated over 50% of breach notices in 2026
Synnovis/NHS Essex
Thousands of patient records stolen in ransomware attack affecting NHS trust in Essex
KT Corporation
Telecommunications company customer data breach in South Korea, resulted in $39M fine
Cell C
Data breach confirmed following 2024 cyberattack affecting major South African telecom provider
ANTS
Cyberattack on France's identity agency exposed 19 million records with personal data linked to ID documents
U.S. Government Agencies
Thousands of civil servants' passwords exposed since early 2024 including White House-linked passwords
Synnovis
Thousands of NHS patient records stolen during ransomware attack affecting Mid South Essex Foundation Trust
MCBS
Data breach affecting 1.2 million individuals at Atlanta-based medical business management company
Thousands of NHS patient records stolen in ransomware attack
Thousands of NHS patient records stolen in ransomware attack
Synnovis NHS
Thousands of patient records stolen in major ransomware cyberattack affecting NHS trust in Essex
MCBS
Data breach affects 1.2 million individuals at Atlanta-based medical business management company
Yearslong data breach
Yearslong data breach exposed residents' private health-related information
Toppan
Supply chain breach exposing vulnerabilities affecting Singapore citizens, banks, and institutions
French telco subsidiaries
Data breach with cybersecurity vulnerabilities; fined €42 million by French regulator in Jan 2026
FirstClass Travel Agency
Australian travel agency breached; customer records compromised
Amgen
Pharmaceutical company Amgen says it suffered a data breach after threat actors stole corporate data and patient information stored in multiple cloud systems operated by third-party service providers. [...]
FinWise Bank
Data breach affecting 689,000 users with unencrypted personal data accessed
CommonSpirit Health
19,027 patient records exposing personal and medical information
EY (Ernst & Young)
Third-party vendor breach exposed sensitive tax client data after 81-day notification delay
Yearslong data breach of residents' private health-related information
Yearslong data breach of residents' private health-related information
Network breach
Network breach exposed sensitive data affecting 1.26 million people at healthcare billing company