HackingHealthcareHealthcareStolen CredentialsTargetedIdentity (basic)PIILowContained

Rehabilitation Hospital of Southern California

bd_09c0ebe864b1d082 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 1, 2024

Filed

Mar 29, 2024

To disclose

8 weeks

Affected

1state residents only

Linked

3 filings

Confidence

65%

Full breach record for Rehabilitation Hospital of Southern California →

Rehabilitation Hospital of Southern California, LLC notified Montana residents of a data breach where unauthorized access occurred between Jan 16 and Feb 4, 2024. Patient names and other PII were potentially exposed. The hospital isolated systems, engaged forensic investigators, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 16 days

discovery → filing · 8 weeks / 57 days

Jan 16, 2024

Begins

Feb 1, 2024

Discovered

Mar 29, 2024

Filed

vs. sector median

3 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

California State AGbd_5abda10ebf43b3e62024-03-29Verified
HHS OCRbd_e140ad5e90fd98f52024-03-29Verified

Name: Rehabilitation Hospital of Southern California
norm: rehabilitation hospital of southern california

Name: Rehabilitation Hospital of Southern California
norm: rehabilitation hospital of southern california
Industry: Healthcarellm

Discovered: Feb 1, 2024
Breach occurred: Jan 16, 2024 – Feb 4, 2024
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: Identity (basic)PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: in communication with law enforcement
Initial access: valid_credentials

During the incident: Secured and isolated our IT systems
Commenced an investigation with assistance from a third-party cybersecurity firm
Been in communication with law enforcement
Offering you a complimentary one-year membership to Identity Defense Complete
Changes made: Implemented, and will continue to adopt, 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: 8 weeks(57 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

California State AGMar 29 · first

HHS OCRMar 29 · first

Montana State AGMar 29 · first · this page

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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1235.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 29, 2024
Raw hash: 0173ccccad052f156ccb4055a7ad36fae8785e2549aaff52f1820300b485d091

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityRehabilitation Hospital of Southern California

Victim entityRehabilitation Hospital of Southern California

Incidentdiscovered Feb 1, 2024

Stated responseSecured and isolated our IT systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov