Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Walmart

Disclosed Feb 22, 2018741 affectedConfirmed

Official notice

Wal-Mart Stores, Inc., the covered entity (CE), reported that the electronic protected health information (ePHI) of 741 individuals was disclosed when a system error caused information about a patient to be viewed by the wrong patient via notification through the CE's app or an e-mail. The types of ePHI disclosed included names and prescription information. The CE provided breach notification to HHS, affected individuals, and the media. As a result of OCR's investigation, the CE provided evidence it implemented improved technical safeguards to prevent similar incidents.

What is known

People affected741 (as reported to HHS)
DisclosedFeb 22, 2018
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): Walmart (Healthcare Provider, AR)

Notices filed

TotalFeb 22, 2018
HHS archive735 people
TotalMar 26, 2018
HHS archive741 people

Other breaches at Walmart

Insider breachInsider exposed names and health records. Reported to the HHS archive.1,267 affectedHealthcareUSFeb 23, 2024Lost or stolen device breachLost or stolen device exposed names and health records. Reported to the Delaware DOJ.15K affectedHealthcareUSJul 26, 2019
History of this record
disclosed2026-09-25
2018-03-26 to 2018-02-22by 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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