HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)PHIHealth (basic)LowContained

Tri-City Healthcare District

bd_fbab899607e33014 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 9, 2023

Filed

Oct 12, 2024

To disclose

48 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

65%

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

Tri-City Healthcare District notified individuals of a data security incident where an unknown actor gained access to and obtained data from the network on November 8, 2023. The organization became aware of unusual activity on November 9, 2023. Affected data includes names and potentially protected health information. The organization engaged cybersecurity experts, notified the FBI and DHS, and is offering credit monitoring services.

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California clockDiscovered Nov 9, 2023 → Notified Oct 11, 2024337d ✗ CA 60-day late48 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 48 weeks / 338 days

Nov 8, 2023

Begins

Nov 9, 2023

Discovered

Oct 12, 2024

Filed

vs. sector median

+37 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_e4342a20956313882024-10-12Verified
Vermont State AGbd_dc5cdcf78bf651212024-10-11 · +1dVerified
New Hampshire State AGbd_90f32ce204efbcf62024-10-14 · +2dVerified

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: Oct 11, 2024
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)PHIHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified the Federal Bureau of InvestigationNotified U.S. Department of Homeland Security

During the incident: Took steps to secure our digital environment
Engaged leading cybersecurity experts to assist with an investigation
Implemented additional security features to reduce the risk of a similar incident occurring in the future
Notified the Federal Bureau of Investigation, U.S. Department of Homeland Security
Offering you the opportunity to enroll in complimentary credit monitoring and identity theft protection services through IDX, A ZeroFox Company
Changes made: Implemented additional security features to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(338 days from discovery to filing)
Compliance flags: CA 60-day late · 337d
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: Oct 11, 2024
337d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 9, 2023 → Notified: Oct 11, 2024	337d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Vermont State AGOct 11 · first

Maine State AG+1d

California State AG+1d · this page

New Hampshire State AG+3d

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/sb24-593304
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 12, 2024
Raw hash: a91f378906daaecb3ae72ef974b19ec67c1856a62892d10baea4ee9bcaecf133

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityTri-City Healthcare District

Victim entityTri-City Healthcare District

Incidentdiscovered Nov 9, 2023

Stated responseTook steps to secure our digital environment

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov