Every public data breach

44 disclosed this week · 26,355 on record

Yale University

Disclosed Jul 26, 2018119,000 affectedConfirmed

Official notice

The covered entity (CE), Yale University, discovered in September 2018, that it sent letters to wrong addresses due to a collating error, affecting 1,102 individuals. The types of protected health information (PHI) involved in the incident included demographic and clinical information. OCR reviewed the CE’s policies and procedures related to the breach and was satisfied that they were in compliance with the Privacy Rule. Following the breach, the CE sanctioned and retrained employees and updated its mailing list procedures and forms so as to prevent a similar type of error happening in the future. OCR obtained assurances that the CE provided breach notification to individuals affected by this breach and the media in accordance with the Breach Notification Rule.

What is known

People affected119,000 (as reported by the organization)
DisclosedJul 26, 2018
DiscoveredJun 16, 2018
HappenedApr 1, 2008
AttackHacking
Data exposedNamesHealth
SectorEducation · US
StatusConfirmed

Sources

Notices filed

Other breaches at Yale University

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to The covered entity (CE), Yale University, discovered in September 2018, that it sent letters to wrong addresses due to a collating error, affecting 1,102 individuals. The types of protected health information (PHI) involved in the incident by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 119000by backfillSource
disclosed2026-09-25
2018-07-27 to 2018-07-26by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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