Every public data breach

44 disclosed this week · 26,355 on record

San Francisco Department of Public Health

Disclosed May 11, 2018900 affectedConfirmed

Official notice

On November 14, 2018, the covered entity (CE), San Francisco Department of Public Health, filed a breach notification report after discovering a computer error that caused its business associate (BA), Alluma, to mislabel letters and send them to the wrong people. This incident affected the protected health information (PHI) of 622 individuals and included paper records and films that contained demographic information. The CE provided breach notification to HHS, affected individuals, and the media. Following the breach, the CE investigated the incident and implemented new technical safeguards. OCR obtained copies of the CE’s policies and procedures, documentation of administrative safeguards, and its BA agreement. As a result of OCR’s investigation, the CE added a step to its quality control process for renewal notices.

What is known

People affected900 (as reported to HHS)
DisclosedMay 11, 2018
HappenedNov 14, 2018
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
records2026-09-25
622 to 900by backfillSource
attack2026-09-25
unknown to insiderby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 622by backfillSource
summary2026-09-25
empty to On November 14, 2018, the covered entity (CE), San Francisco Department of Public Health, filed a breach notification report after discovering a computer error that caused its business associate (BA), Alluma, to mislabel letters and send thby backfillSource
disclosed2026-09-25
2019-10-03 to 2018-05-11by backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about San Francisco Department of Public Health