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44 disclosed this week · 26,355 on record

Central Texas Medical Specialists

Disclosed Aug 21, 202136,503 affectedConfirmed

Official notice

The covered entity (CE), Central Texas Medical Specialists, dba Austin Cancer Centers, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 36,503 individuals. The PHI involved included names, dates of birth, addresses, Social Security numbers, claims information, diagnoses, medications, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, technical, and security safeguards. During the investigation, OCR provided the CE with technical assistance regarding the requirements of the HIPAA Security Rule.

What is known

People affected36,503 (as reported by the organization)
DisclosedAug 21, 2021
HappenedJul 21, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to The covered entity (CE), Central Texas Medical Specialists, dba Austin Cancer Centers, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 36,503 individuals. The PHI involved included naby backfillSource
Added2026-09-25
First recordedby backfillSource

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

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