Ransomware attack shut down computer network, forced surgery cancellations and clinic
Ransomware attack shut down computer network, forced surgery cancellations and clinic closures
Government Data Breaches (355857 indexed)
Mexican Government Agencies
Single hacker exploited Claude Code and OpenAI's ChatGPT to breach 9 federal agencies; occurred Dec 2025-Feb 2026
Mexican Government Agencies
Nine federal agencies compromised by hacker exploiting AI tools (Claude Code, ChatGPT) between Dec 2025-Feb 2026
Canada Goose
600,000+ customer transaction records allegedly exposed via third-party payment processor by ShinyHunters
University of Pennsylvania
ShinyHunters leaked confidential donor records and internal files from multiple departments
Canada Goose
600,000 customer records exposed via third-party payment processor breach by ShinyHunters
Ransomware attack
Ransomware attack leaked data from Multiethnic Cohort Study including driver's license numbers and voter registration data
Mexican Government Agencies
Nine federal government agencies breached between Dec 2025 and Feb 2026 via AI platform exploits
Anthem
Data breach impacting some Anthem members; Conduent reports breach contained with no evidence of data misuse
Conduent
Ransomware attack on government contractor exposed at least 25 million people's sensitive data
TriZetto
Healthcare software breach affecting 3+ million Americans through compromised platform access
University of Pennsylvania
ShinyHunters leaked confidential files containing years of donor activity and records
Mexican Government
Nine federal agencies compromised via AI tools exploitation; attackers used Claude Code and OpenAI ChatGPT
Mexican Government
Nine federal agencies compromised; millions of records stolen via Claude Code and ChatGPT exploits Dec 2025-Feb 2026
Canada Goose
600,000 customer transaction records leaked by ShinyHunters via third-party payment processor
Conduent
Ransomware attack on government contractor, 25M+ people affected
Canada Goose
ShinyHunters leaked 600,000 customer records exposed via third-party payment processor breach in February 2026.
Ransomware attack brought down computer network; surgeries canceled and clinics closed
Ransomware attack brought down computer network; surgeries canceled and clinics closed
Mexican Government
Attacker exploited AI tools to breach 9 federal government agencies, stole millions of records
Mexican Government
Federal government breach between late December 2025 and mid-February 2026; millions of records affected
Conduent
Third-party services vendor breach; handles health plans and back-office administrative work
Ransomware attack
Ransomware attack exposed Multiethnic Cohort Study data including driver license numbers and voter registration
Ransomware attack brought down computer network; surgeries canceled, clinics closed
Ransomware attack brought down computer network; surgeries canceled, clinics closed
University of Pennsylvania
ShinyHunters leaked confidential files including donor records and GSE internal documents