Mckesson Corp discovers cybersecurity incident affecting information systems on August 25, 2026

MCK•2026-08-28

Cybersecurity incident disclosed in SEC filing

Aug. 28 (Reuters) - Mckesson Corp MCK.N said in an SEC filing that it discovered a cybersecurity incident affecting its information systems on Aug. 25, 2026.

Mckesson Corp said it had not determined as of Aug. 25, 2026 that the incident was material, according to the filing.

Mckesson Corp discovers cybersecurity incident affecting information systems on August 25, 2026

Cybersecurity incident disclosed in SEC filing

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