Valley Mountain Regional Center

Disclosed Sep 29, 2023126,679 affectedConfirmed

The covered entity (CE), Valley Mountain Regional Center, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 126,679 individuals. The PHI involved included names, addresses, birthdates, Social Security and drivers’ license numbers, and diagnoses. The CE notified HHS, the affected individuals, and the media. In response to the breach, the CE updated its administrative and technical safeguards. OCR provided technical assistance regarding the HIPAA Rules.

What is known

People affected	126,679 (as reported to HHS)
Disclosed	Sep 29, 2023
Discovered	Feb 20, 2024
Happened	Aug 1, 2023
Attack	Hacking
Data exposed	NamesHealth
Sector	Nonprofit · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: Valley Mountain Regional Center

Official noticejustice.oregon.gov

Oregon DOJ breach notice: Valley Mountain Regional Center

Official noticeago.vermont.gov

Vermont Attorney General: 2024-04-19 Valley Mountain Regional Center Data Breach Notice to Consumers

Official noticein.gov

Indiana Attorney General 2024 data breach report: Valley Mountain Regional Center

Official noticeocrportal.hhs.gov

HHS OCR breach report (archive, resolved): Valley Mountain Regional Center (Business Associate, CA)

Notices filed

TotalSep 29, 2023

HHS archive126,679 people

Residents of CAApr 19, 2024

California AGCount not stated

Residents of ORApr 19, 2024

Oregon DOJ54,286 people

Residents of VTApr 19, 2024

Vermont AGCount not stated

Residents of INApr 19, 2024

Indiana AG31 people

Other breaches at Valley Mountain Regional Center

Insider breachInsider exposed names and health records. Reported to the California AG.529 affectedNonprofitUSJul 25, 2025 Hacking breachHacking exposed names and health records. Reported to the California AG.17K affectedNonprofitUSNov 9, 2021

History of this record

attack2026-09-25

unknown to hackingby backfillSource

data_types2026-09-25

[] to ["names","health"]by backfillSource

records_basis2026-09-25

organization to hhsby backfillSource

records2026-09-25

54286 to 126679by backfillSource

disclosed2026-09-25

2024-04-19 to 2023-09-29by backfillSource

summary2026-09-25

empty to The covered entity (CE), Valley Mountain Regional Center, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 126,679 individuals. The PHI involved included names, addresses, birthdates, Soby backfillSource

records_basis2026-09-25

empty to organizationby backfillSource

records2026-09-25

empty to 54286by backfillSource

source2026-09-25

empty to https://ago.vermont.gov/document/2024-04-19-valley-mountain-regional-center-data-breach-notice-consumersby backfillSource

discovered2026-09-25

empty to 2024-02-20by 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 Valley Mountain Regional Center