HackingHealthcareHealthcareCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHighContained

Tri-City Healthcare District

bd_d4c8c74c6bcb6edf · schema v1 · pii pii-v1

Severity

High

Discovered

Nov 9, 2023

Filed

Apr 4, 2024

To disclose

21 weeks

Affected

7,143state residents only

Linked

7 filings

Confidence

67%

Full breach record for Tri-City Healthcare District →4 incidents on file

Tri-City Healthcare District notified 7,143 California residents of a data security incident. On November 9, 2023, the organization became aware of unusual activity disrupting system access. Investigation revealed an unknown actor may have accessed data on November 8, 2023. Affected data included names and Social Security Numbers. The organization engaged cybersecurity experts, notified the FBI and DHS, and offered credit monitoring services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Nov 9, 2023 → Notified Apr 4, 2024147d ✗ CA 60-day late21 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 21 weeks / 147 days

Nov 8, 2023

Begins

Nov 9, 2023

Discovered

Apr 4, 2024

Filed

vs. sector median

+10 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Maine State AGbd_14769f608cc691522024-04-04Verified
Vermont State AGbd_334b0f94cc2937a32024-04-04Verified
Massachusetts State AGbd_5fe587e653ca1bfc2024-04-04Verified
New Hampshire State AGbd_7d1174f7723f487c2024-04-04Verified

Show 2 more filings ↓

Montana State AGbd_7d4d250c4c2f3d532024-04-04Candidate
Indiana State AGbd_a04472851663bc222024-04-04Verified

Name: Tri-City Healthcare District
norm: tri city healthcare district

Name: Tri-City Healthcare District
norm: tri city healthcare district
Industry: Healthcarellm

Discovered: Nov 9, 2023
Breach occurred: Nov 8, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Apr 4, 2024
Affected individuals: 7,143state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unknown
Threat actor: External
Regulator citations: Notified the Federal Bureau of InvestigationNotified U.S. Department of Homeland Security

During the incident: Took steps to secure its digital environment
Engaged leading cybersecurity experts to assist with an investigation
Implemented additional security measures to further harden its environment
Notified the Federal Bureau of Investigation
Notified U.S. Department of Homeland Security
Offered complimentary credit monitoring and identity protection services
Changes made: Implemented additional security measures to further harden its environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(147 days from discovery to filing)
Compliance flags: CA 60-day late · 147d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Nov 9, 2023
→ Notified: Apr 4, 2024
147d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 9, 2023 → Notified: Apr 4, 2024	147d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Maine State AGApr 4 · first

Vermont State AGApr 4 · first

Massachusetts State AGApr 4 · first

New Hampshire State AGApr 4 · first

Montana State AGApr 4 · first

Indiana State AGApr 4 · first

California State AGApr 4 · 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/sb24-583497
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 4, 2024
Raw hash: ac99194a7f353f7758be7484812934f1a25fa9a9f1d629a981a6a15527aff17a

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityTri-City Healthcare District

Victim entityTri-City Healthcare District

Incidentdiscovered Nov 9, 2023

Stated responseTook steps to secure its digital environment

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov