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August 2026 McKesson cybersecurity incident

Could your information be connected to the McKesson cyber incident?

McKesson disclosed that third-party applications were accessed without authorization and data was exfiltrated. Its investigation remains ongoing, and the company has not identified the affected applications, information, or number of people involved.

News reports attribute broader claims to the ShinyHunters extortion group. McKesson has not confirmed the reported actor, access method, platforms, victim count, or claimed data categories.

This public form never asks for passwords, one-time codes, Social Security numbers, medical records, or detailed health information. Do not enter them in any field.

Incident

Discovered Aug. 25, 2026

Reported

Disclosed Aug. 28, 2026

Reported scope

Not yet disclosed

Investigating firm: Hall Attorneys, P.C. Responsible attorney: Nick Hall. Attorney advertising. Submitting information does not create an attorney-client relationship.
Step 1 of 3: Check Eligibility

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Step 1 of 3

Check Eligibility

  1. Eligibility
  2. Contact
  3. Review

Check Eligibility

Tell Hall Attorneys how your information, work, care, or business activity could relate to McKesson.

Are you submitting your own information rather than information for someone else?
Are you at least 18 years old?
Has a reputable breach checker or security service matched your email or phone to this McKesson incident?
Did McKesson or another organization notify you about this August 2026 incident?

Because McKesson has not yet identified affected people, one claimed relationship record is enough to request initial review. Hall Attorneys will verify it before legal reliance.

McKesson intake

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McKesson Incident Review Intake v1.0 · 2026-08-28

Hall Attorneys review

Hall Attorneys, P.C. is the investigating party for this McKesson intake. I authorize the firm to review my answers and contact me about a possible claim.

Secure processing

I consent to secure storage and processing of the information I submit, and to sharing it with Hall Attorneys for conflict checking, investigation, and legal review.

Sensitive information

I will not provide passwords, one-time codes, full payment-card or bank-account numbers, government ID numbers, medical records, detailed health information, or other restricted secrets. Claimed evidence remains unverified until source documents are reviewed.

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This is attorney advertising. Submitting information does not create an attorney-client relationship, guarantee representation, or make me part of a lawsuit, class, or arbitration.

My acceptance

I confirm that I am submitting my own information, my answers are accurate to the best of my knowledge, and Hall Attorneys may contact me to continue its review.

End of terms

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Hall Attorneys investigation

Responsible attorney: Nick Hall. Relationship and source documents are reviewed before legal reliance.

1 claimed proof category required
Security incident
Evidence checklist
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