CISA
US agency breached through Cisco vulnerability; FIRESTARTER backdoor allowed persistent access through March 2026
Retail & E-Commerce Data Breaches (13068 indexed)
Conduent
Breach compromised personal data of millions nationwide, notifications sent a year later
Ransomware attack caused data
Ransomware attack caused data leak exposing patient information from Multiethnic Cohort Study including driver's license and voter data
CommonSpirit Health
Data breach exposed medical and personal data of 19,027 patients
UK Companies House
Data exposed during five-month security issue affecting all UK firms' records
UK Biobank
Confidential health records exposed online and offered for sale on Chinese website
Ransomware attack led to data leak from Multiethnic Cohort Study including driver's
Ransomware attack led to data leak from Multiethnic Cohort Study including driver's license numbers
Intesa Sanpaolo SpA
Italian regulator fined $36 million for serious data protection and personal data security shortcomings
CareCloud
Healthcare software firm informed SEC of potential patient data leak; electronic health records may have been leaked after system intrusion
Companies House
UK firm records exposed during five-month security issue affecting all registered companies
13,000 patient records in New Jersey exposed through cyberattack on law firm
13,000 patient records in New Jersey exposed through cyberattack on law firm representing state hospitals
LexisNexis
Cloud systems breach exposed records of 400K users including federal judges and .gov accounts
Ransomware attack data
Ransomware attack data leak from Multiethnic Cohort Study exposed driver's license numbers and voter registration data
UK BioBank
Confidential health records from flagship medical research project exposed online, leaked dozens of times
Ransomware attack exposing personal data of 1.2 million individuals
Ransomware attack exposing personal data of 1.2 million individuals
Partnered Health
Personal information and medical details breached across 21 clinics in Australian healthcare provider attack
GuardDog
Telehealth company accessed and shared patient medical records from Epic platform with law firms without authorization
UK Biobank
Confidential health records from medical research project exposed online multiple times
Ransomware attack leading to data leak including driver's license numbers and voter IDs
Ransomware attack leading to data leak including driver's license numbers and voter IDs
Ransomware attack resulted in data
Ransomware attack resulted in data leak from Multiethnic Cohort Study including driver's license numbers and voter information
UnitedHealthcare
One of the largest healthcare data breaches in American history involving multiple companies
Companies House (UK)
Data exposed during five-month security issue; all UK firms urged to check records
CISA (US Government)
US agency breached through Cisco vulnerability, FIRESTARTER backdoor malware allowed persistent access through March
CISA (U.S. Department)
US agency breached through Cisco vulnerability with FIRESTARTER backdoor malware