Ransomware attack shut down computer network, forced surgery cancellations and clinic
Ransomware attack shut down computer network, forced surgery cancellations and clinic closures
Healthcare Data Breaches (354480 indexed)
Conduent
Ransomware attack on government contractor exposed data affecting at least 25 million people
Conduent
Ransomware attack on major US government contractor exposed data affecting 25M+ people
Ransomware attack
Ransomware attack leaked data from Multiethnic Cohort Study including driver's license numbers and voter registration data
Anthem
Data breach affecting some Anthem members; breach contained with no evidence of misuse
Canada Goose
ShinyHunters leaked 600,000 customer transaction records via third-party payment processor
Mexican Government
Nine federal agencies compromised via Claude Code and ChatGPT, millions of records stolen
Canada Goose
ShinyHunters leaked 600K+ customer records via third-party payment processor
Conduent
Ransomware attack on government contractor exposed at least 25 million people's sensitive data
University of Pennsylvania
ShinyHunters leaked confidential files containing never-before-seen donor records and activity tracking data
Mexican Government
Multiple federal agencies breached via AI tools (Claude, ChatGPT); attackers posed as bug bounty researchers
Mexican Government (9 agencies)
Nine federal agencies breached via AI tools (Claude Code, ChatGPT); millions of records stolen
Canada Goose
ShinyHunters leaked 600,000+ customer records via third-party payment processor breach in February 2026.
Ransomware attack brought down computer network, canceled surgeries and closed clinics
Ransomware attack brought down computer network, canceled surgeries and closed clinics
Mexican Government
Attacker used Claude Code and ChatGPT to breach 9 federal agencies, stole millions of records Dec 2025-Feb 2026
University of Pennsylvania
Confidential donor records and internal files leaked by ShinyHunters; breach exposed years of donor activity data
Ransomware attack
Ransomware attack exposed data from Multiethnic Cohort Study including driver's license numbers and voter registration data
Canada Goose
600,000+ customer transaction records exposed via third-party payment processor by ShinyHunters
TriZetto
Healthcare software breach affected 3 million Americans through compromised patient data
University of Pennsylvania
ShinyHunters cybercrime group leaked confidential donor records and years of donor activity data
University of Pennsylvania
ShinyHunters leaked confidential files including years of donor activity records
TriZetto
Healthcare tech provider breach exposed personal information of more than 3 million Americans
New Jersey Law Firm
Cyberattack exposed hospital records of nearly 13,000 patients through breached law firm representing hospitals
University of Pennsylvania
ShinyHunters leaked confidential donor records and internal GSE files