U.S. Civil Service/White House
Thousands of civil servants' passwords exposed since early 2024, including some linked to White House
Finance & Banking Data Breaches (11597 indexed)
Medical billing company
Ransomware attack exposed protected health data on 1.3 million people; data leaked to dark web
Healthcare billing company network breach exposed sensitive data affecting 1.26 million
Healthcare billing company network breach exposed sensitive data affecting 1.26 million people
Toppan
Supply chain breach exposing vulnerabilities affecting Singapore citizens, banks, and institutions
Gaming accounts (multiple)
11 million gaming account credentials exposed in 2024 data leaks discovered by Kaspersky
Telecom subsidiaries (France)
Data breach resulting in €42 million GDPR fines for lack of basic security controls in 2024
TransUnion
Among the seven largest banking data breaches of 2025
EVO Banco
2024 API vulnerability exposed financial and identity data of 1.27 million records
Less than two weeks after OpenAI disclosed that an experimental AI model breached
Less than two weeks after OpenAI disclosed that an experimental AI model breached Hugging Face during a cybersecurity evaluation, Anthropic has revealed that its own review uncovered three incidents in which Claude model
EY (via vendor)
Third-party vendor breach exposed tax client data after 15-day intrusion
Spectrum (Charter Communications)
Data breach exposed 4.9 million confirmed accounts with 42 million records claimed stolen
McLaren Health Care
Two ransomware breaches in 2023-2024 affected 3.2+ million patients, $14M settlement
Thousands of NHS patient records stolen in ransomware attack affecting healthcare services
Thousands of NHS patient records stolen in ransomware attack affecting healthcare services
FinWise
689,000 users' unencrypted data accessed by former employee
U.S. Government Agencies
Thousands of civil servants' passwords exposed since early 2024 including White House-linked passwords
ANTS (French ID Agency)
Cyberattack exposed 19 million records with personal data linked to French identity documents
French Telco Subsidiaries
Data breach from 2024 with cybersecurity vulnerabilities; company fined €42 million by French regulator
TriZetto
More than 3 million people impacted by breach of healthcare tech provider software affecting multiple counties
Illuminate Education
Edtech company data breach leading to FTC settlement and data security program requirements
Cherry Creek School District
Data breach exposed student information, lawsuit filed
Synnovis NHS
Thousands of patient records stolen in major ransomware cyberattack affecting NHS trust in Essex
Huntsville Hospital Health System
Third-party data breach exposed patient information at multiple facilities
Intesa Sanpaolo S.p.A.
Employee unlawfully accessed customer data over two years, €31.8m impact
KT Corp
Major data breach with significant fine from South Korea's Personal Information Protection Commission