Executive Summary

McKesson, a major U.S. healthcare and pharmaceutical distributor, disclosed a cybersecurity incident involving unauthorized access to third‑party applications and the theft of 284 million patient records. The extortion group ShinyHunters claims responsibility, demanding ransom. McKesson is investigating the breach and assessing impact.

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Intelligence Metadata - Source Publisher: DataBreaches.net - Published Date: 2026-08-29T01:02:51+00:00 - Category: data-breaches

Original Description: 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 extortion group claiming it stole 284 million patient data records. McKesson is a major U.S. healthcare company and pharmaceutical distributor that provides medicines, medical supplies, technology, and services to... Source

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