HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedPHIHealth (basic)Identity (basic)Government IDMediumContained

Aurora Charter Oak Hospital

bd_53bb084a9b70d232 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 28, 2024

Filed

Oct 4, 2024

To disclose

36 weeks

Affected

Not disclosed

Confidence

66%

Full breach record for Aurora Charter Oak Hospital →

Aurora Charter Oak Hospital notified California residents of an unauthorized access incident occurring between January 27-28, 2024. An external party accessed systems and acquired files containing PHI, including names, DOBs, medical record numbers, services received, and treating physicians. Some records also contained SSNs. The hospital engaged forensic experts, notified law enforcement, and implemented additional security safeguards.

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Incident timeline

undetected · 1 days

discovery → filing · 36 weeks / 250 days

Jan 27, 2024

Begins

Jan 28, 2024

Discovered

Oct 4, 2024

Filed

vs. sector median

+24 wks slower

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

Name: Aurora Charter Oak Hospital
norm: aurora charter oak hospital

Name: Aurora Charter Oak Hospital
norm: aurora charter oak hospital
Industry: Healthcarellm

Discovered: Jan 28, 2024
Breach occurred: Jan 27, 2024 – Jan 28, 2024
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)Government ID
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified law enforcement

During the incident: Took steps to secure our systems
Launched an investigation with the assistance of third-party forensic experts
Notified law enforcement
Implemented additional safeguards and technical security measures to further protect and monitor our systems
Changes made: Implemented additional safeguards and technical security measures to further protect and monitor our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 36 weeks(250 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/sb24-592904
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 4, 2024
Raw hash: fe42de162d22a8fe416bc4e976f00b60aabafd49d924cd0916aefe91a772373d

Reporting entityAurora Charter Oak Hospital

Victim entityAurora Charter Oak Hospital

Incidentdiscovered Jan 28, 2024

Stated responseTook steps to secure our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov