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44 disclosed this week · 26,355 on record

Hand & Upper Extremity Centers

Disclosed Sep 1, 201712,806 affectedConfirmed

Official notice

On July 5, 2017, the covered entity (CE), Hand & Upper Extremity Centers dba Hand Rehabilitation Specialists, was informed that the hacker group, the Dark Overlord, may have breached their computer network. The CE reported the notice to the Ventura County Sheriff's High Tech Task Force, who began a forensic information technology investigation in consultation with the Federal Bureau of Investigation. This investigation is ongoing. To date, law enforcement has found no evidence of any information leaving the CE's system. However, unauthorized access has not been ruled out, and out of an abundance of caution, the CE provided breach notification to HHS, affected individuals, and the media. Following the breach, the CE changed passwords, updated access control logs, updated its email policy and procedures, and added technical and administrative security improvements. OCR obtained assurances that the CE implemented the voluntary corrective actions noted above.

What is known

People affected12,806 (as reported to HHS)
DisclosedSep 1, 2017
AttackHacking
Data exposedNamesSocial Security numbersHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
["names","ssn"] to ["names","ssn","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 12806by backfillSource
summary2026-09-25
empty to On July 5, 2017, the covered entity (CE), Hand & Upper Extremity Centers dba Hand Rehabilitation Specialists, was informed that the hacker group, the Dark Overlord, may have breached their computer network. The CE reported the notice to theby backfillSource
data_types2026-09-25
[] to ["names","ssn"]by 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.

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