All Breaches
August 20, 2026 Verified Sensitive Record Healthcare

McKesson 2026 Data Breach

McKesson discovered the cybersecurity incident on August 25, 2026, after employee corporate accounts were targeted.

Unknown
Affected People
23
Data Types
Unknown
Severity
Yes
Verification

Exposed Data Types

23
Names
Physical addresses
Phone numbers
Email addresses
Patient IDs
Dates of birth
Health insurance information
Health plan member identification numbers
Medical record numbers
Dates of medical service
Healthcare provider information
Diagnoses
Medication information
Test results
Medical images
Treatment information
Billing information
Claims information
Account numbers
Credit or debit card numbers
Financial information
Social security numbers
Guarantor information

Additional Information

Added DateSeptember 11, 2026
Breach DateAugust 20, 2026
Domainmckesson.com
Last Content UpdateSeptember 11, 2026

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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