HackingHealthcareHealthcareStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedPHIHealth (basic)Identity (basic)LowContained

Kaiser Permanente

bd_32c7eed1cbbbeb93 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 3, 2024

Filed

Nov 1, 2024

To disclose

8 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Kaiser Permanente discovered on September 3, 2024, that an unauthorized party accessed the email accounts of two workforce members. The incident occurred between August and September 2024. Affected data included protected health information (PHI) such as names, dates of birth, medical record numbers, and medical information. Social Security numbers and credit card numbers were not involved. Kaiser terminated access and reset passwords.

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Incident timeline

undetected · 33 days

discovery → filing · 8 weeks / 59 days

Aug 1, 2024

Begins

Sep 3, 2024

Discovered

Nov 1, 2024

Filed

vs. sector median

4 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_a1be27e2d67157222024-11-01Verified

Name: Kaiser Foundation Hospitals
norm: kaiser foundation hospitals
Domain: healthy.kaiserpermanente.org

Name: Kaiser Permanente
norm: kaiser permanente
Domain: healthy.kaiserpermanente.org
Industry: Healthcarellm

Discovered: Sep 3, 2024
Breach occurred: Aug 1, 2024 – Sep 30, 2024
Undetected for: 33 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 AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Terminated the unauthorized access
Resetting the workforce members’ email account password
Changes made: Strengthening internal practices and controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(59 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

HHS OCRNov 1 · first

California State AGNov 1 · 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://oag.ca.gov/ecrime/databreach/reports/sb24-594220
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 1, 2024
Raw hash: c0cc6c038aa15228f03c7e0222f9819fc21ad3a2abf7c69472e77eecbdbe4c45

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityKaiser Foundation Hospitals

Victim entityKaiser Permanente

Incidentdiscovered Sep 3, 2024

Stated responseTerminated the unauthorized access

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov