TriZetto
More than 3 million people impacted by breach of healthcare tech provider software affecting multiple counties
Finance & Banking Data Breaches (11936 indexed)
LastPass
2022 breach exposed 1.6 million users, resulted in ICO fine
Ransomware attack
Ransomware attack exposed personal data of 1.2 million individuals
Medical Billing Company (unnamed)
2025 ransomware attack exposed protected health data on 1.3 million people; leaked to dark web
Cell C
Data breach confirmed following 2024 cyberattack affecting major South African telecom provider
Ernst & Young (EY)
Third-party vendor breach exposed sensitive tax client data after 81-day notification delay
McLaren Health Care
Two ransomware breaches in 2023-2024 affected 3.2 million victims; settled lawsuit for $14M
Gaming Accounts (Multiple)
11 million gaming account credentials exposed
Essex NHS Trust
Thousands of patient records stolen in ransomware cyberattack by Synnovis
CommonSpirit Health
19,027 patient records exposed with personal and medical information
McLaren Health Care
Two ransomware breaches in 2023-2024 affected 3.2+ million patients, $14M settlement
Tribeca Film Festival
Unprotected database exposed 666,000 records including celebrity contact information
Anthropic found Claude accessed systems at three real businesses after a testing error
Anthropic found Claude accessed systems at three real businesses after a testing error gave its AI models live internet access during cybersecurity evaluations.
ANTS (French ID Agency)
Cyberattack exposed 19 million records with personal data linked to French identity documents
Healthcare billing company data breach
Healthcare billing company data breach exposed sensitive information affecting 1.26 million people
TransUnion
Among the seven largest banking data breaches of 2025
Meta (2018 breach)
2018 data breach resulted in €251 million fine from EU privacy regulator in December 2024
FinWise
689,000 users' unencrypted data accessed by former employee
Charter Spectrum
Data breach exposed 4.9M confirmed accounts; ShinyHunters claims 42M records stolen
Synnovis NHS Trust
Thousands of patient records stolen in major ransomware attack affecting Mid South Essex NHS
Intesa Sanpaolo S.p.A.
Employee unlawfully accessed customer data over two years, €31.8m impact
Gaming accounts (Kaspersky research)
Over 11 million gaming account credentials exposed and found on dark web
Huntsville Hospital Health System
Third-party data breach exposed patient information at multiple facilities