HackingHealthcareTechnologyHealthcareStolen CredentialsData ExfiltratedCustomer Data InvolvedBusiness Associate (HIPAA)PHIHealth (basic)Identity (basic)LowContained

Northern Inyo Healthcare District

bd_b48dbb172911c31e · schema v1 · pii pii-v2

Severity

Low

Discovered

Jul 10, 2026

Filed

Aug 20, 2026

To disclose

6 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Northern Inyo Healthcare District →2 incidents on file

Aesto, LLC, a healthcare data migration and archiving service provider, experienced a network security incident impacting its AWS infrastructure. An unauthorized actor accessed and/or acquired protected health information (PHI) between December 2 and December 18, 2025. Aesto discovered the incident on December 18, 2025, and confirmed the scope of data exposure on May 26, 2026. Affected data includes full names and health-related information. Aesto engaged external cybersecurity professionals, notified healthcare providers, and offered credit monitoring services to affected individuals.

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Incident timeline

undetected · 220 days

discovery → filing · 6 weeks / 41 days

Dec 2, 2025

Begins

Jul 10, 2026

Discovered

Aug 20, 2026

Filed

vs. sector median

3 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Northern Inyo Healthcare District
norm: northern inyo healthcare district

Name: Northern Inyo Healthcare District
norm: northern inyo healthcare district
Also named: Northern Inyo Healthcare Districtdba oflegal entity
Northern Inyo Hospitaldba oftrade name
Industry: HealthcarellmTechnologyllm

Discovered: Jul 10, 2026
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 220 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Filed notification with California Attorney General
Third party: via Aesto, LLC

During the incident: Commenced a prompt and thorough investigation
Worked very closely with external cybersecurity professionals experienced in handling these types of incidents
Conducted extensive forensic investigation and manual document review
Notified your healthcare provider of this incident on July 10, 2026
Offering a complimentary 12/24 month membership of Epiq Privacy Solutions Plus
Set up a dedicated and confidential toll-free response line
Changes made: Continually evaluate and modify practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(41 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-628598
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 20, 2026
Raw hash: 9cae2cb8cfafb10d03834a94e9816265b76a3c10e0b5f70e4fc293c44450327f

Reporting entityNorthern Inyo Healthcare District

Victim entityNorthern Inyo Healthcare District

Incidentdiscovered Jul 10, 2026

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov