Every public data breach

47 disclosed this week · 26,367 on record

MedWatch

Disclosed Apr 27, 201840,621 affectedConfirmed

Official notice

On October 20, 2017, an information technology subcontractor for MedWatch, a business associate (BA), applied a misconfigured security patch to an online portal during a routine update causing some protected health information (PHI) to be viewable by the public. The breach affected 40,621 individuals who are members of the BA’s client health plans and third party administrators. The exposed PHI included various combinations of members’ demographic and health insurance information. Upon discovery of the breach on December 15, 2017, the BA immediately restricted access to the portal and requested that internet search engines remove all cached data. The BA notified its client covered entities and provided breach notification to HHS, affected individuals, and the media and posted substitute notice on its website. The BA improved technical safeguards, updated its policies, and retrained all staff and contractors on HIPAA Privacy and Security. OCR obtained assurances that the BA implemented the corrective actions listed above.

What is known

People affected40,621 (as reported to HHS)
DisclosedApr 27, 2018
HappenedOct 20, 2017
AttackInsider
Data exposedNamesSocial Security numbersNames
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to insiderby backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 40621by backfillSource
summary2026-09-25
empty to On October 20, 2017, an information technology subcontractor for MedWatch, a business associate (BA), applied a misconfigured security patch to an online portal during a routine update causing some protected health information (PHI) to be vby backfillSource
Added2026-09-25
First recordedby backfillSource

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

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