Tracker › Healthcare › McKesson is
Disclosure tracker · Incident record

McKesson is

One public disclosure, with its source.

At a glance
Organisation
McKesson is
Kind
Breach or incident
Sector
Healthcare
Severity
Critical
Disclosed
Aug 2026
Indexed
29 Aug 2026
Records
284,000,000, as stated in the disclosure

Summary

Lawrence Abrams reports: Healthcare and pharmaceutical distribution giant McKesson has disclosed a cybersecurity incident involving unauthorized access to third-party applications and data theft, with the ShinyHunters ex

This record says what was disclosed, when and by whom. It does not say that any person or firm was affected.

Related in this sector

Critical1 Dec 2026
AdaptHealth
Healthcare · 4,099,999 records
Data breach exposed personal, health, and insurance information of 4.1 million people
1 Dec 2026
Medium12 Oct 2026
Sharecare
Healthcare · 318,185 records
318,185 records exposed, Dates of birth, Email addresses, Employers, Genders and 6 more
12 Oct 2026
Critical1 Oct 2026
Oracle Health (Cerner)
Healthcare · 20,000,000 records
Nearly 20 million patient records exposed across 80 U.S. hospitals
1 Oct 2026
Medium30 Sep 2026
Medela
Healthcare · 423,947 records
423,947 records exposed, Email addresses, Employers, Job titles, Names and 4 more
30 Sep 2026