McKesson - 6,404,340 breached accounts
Date:
Thu, 10 Sep 2026 05:45:39 Z
Content:
In August 2026, healthcare and pharmaceutical company McKesson was targeted
in a ShinyHunters "pay or leak" extortion campaign . The group subsequently published a substantial corpus of data they alleged was sourced from the company, which included 6.4M unique email addresses among other personal and corporate data attributes. The impacted data related to a range of
individuals and roles, including marketing campaign recipients, patients, staff and healthcare provider contacts. In McKesson's disclosure notice , the company advised it had identified unauthorised access to "certain third-party applications and the exfiltration of certain data was associated with a
subset of customers within our Oncology & Multispecialty and Medical-Surgical business units", but had "reasonable assurance of no ongoing unauthorized activity".
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Link to news story:
https://haveibeenpwned.com/Breach/McKesson
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* Origin: tqwNet Technology News (1337:1/100)