McKesson confirms data exfiltration; ShinyHunters claims 284M records, $55M demand

TechNadu · x · 2026-09-02

Healthcare distributor McKesson confirmed that attackers exfiltrated customer-linked data. ShinyHunters claims responsibility, alleging 1 TB of stolen data across 284M records, with an attack chain of vishing → Okta SSO compromise → Salesforce/Snowflake access, plus a $55M ransom demand. McKesson has not confirmed those figures or the attack chain.

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