Every public data breach

47 disclosed this week · 26,367 on record

Wal-Mart Stores

Disclosed Jun 8, 201627,393 affectedConfirmed

Official notice

Wal-Mart Stores, Inc., the covered entity (CE), reported that the protected health information (PHI) of 771 individuals was disclosed when an internal file merging process error resulted in letters and refund checks being sent to the wrong recipients. The types of PHI included patient’s names, store locations, optical order numbers, dates of orders, and refund amounts. The CE provided breach notification to HHS and affected individuals and provided substitute notice via print media. Additionally, the CE provided evidence it implemented improved administrative safeguards and quality assurance protocols, and retrained staff to prevent similar incidents. OCR obtained assurances that the CE implemented the corrective actions listed above.

What is known

People affected27,393 (as reported to HHS)
DisclosedJun 8, 2016
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
records2026-09-25
771 to 27393by backfillSource
disclosed2026-09-25
2016-11-04 to 2016-06-08by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

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