HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedPHIIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

Delta County Memorial Hospital District (Delta Health)

bd_1b8929159a2c6c15 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 30, 2024

Filed

Jan 31, 2025

To disclose

35 weeks

Affected

Not disclosed

Linked

8 filings

Confidence

65%

Full breach record for Delta County Memorial Hospital District (Delta Health) →2 incidents on file

Delta County Memorial Hospital District experienced unauthorized access to its network between May 27 and May 30, 2024. The attacker may have acquired files containing names, dates of birth, phone numbers, addresses, financial account information, medical information, health insurance information, Social Security numbers, and driver's license numbers. The organization notified law enforcement and engaged cybersecurity experts. Affected individuals are offered one year of Experian IdentityWorks credit monitoring.

J jump to incidentP pin to compareR raw source

California clockDiscovered May 30, 2024 → Notified Nov 1, 2024155d ✗ CA 60-day late35 weeks discovery → filing

Incident timeline

undetected · 3 days

discovery → filing · 35 weeks / 246 days

May 27, 2024

Begins

May 30, 2024

Discovered

Jan 31, 2025

Filed

vs. sector median

+23 wks slower

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

New Hampshire State AGbd_21469493f21bc2af2025-01-31Verified
Montana State AGbd_34943d644a6adedd2025-01-31Candidate
Oregon State AGbd_92d6656257b5349b2025-01-31Verified
Vermont State AGbd_bad5789d01d1b2922025-01-31Verified

Show 3 more filings ↓up to 30d gap

Nebraska State AGbd_c7c2c066c39bb2d62025-01-31Verified
Maine State AGbd_e7b66af0bbdf264e2025-01-31Verified
Illinois State AGbd_c07b0945183ddca52025-01-01 · +30dVerified

Name: Delta County Memorial Hospital District (Delta Health)
norm: delta county memorial hospital district delta health

Name: Delta County Memorial Hospital District (Delta Health)
norm: delta county memorial hospital district delta health
Industry: Healthcarellm

Discovered: May 30, 2024
Breach occurred: May 27, 2024 – May 30, 2024
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 1, 2024
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDFinancial accountHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Notified law enforcement
Began an investigation with the help of leading cybersecurity experts
Offering a complimentary one-year membership of Experian IdentityWorks Credit 3B
Taking steps to reduce the risk of this type of incident occurring in the future, including further enhancing our security measures
Changes made: Further enhancing our security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 35 weeks(246 days from discovery to filing)
Compliance flags: CA 60-day late · 155d
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: May 30, 2024
→ Notified: Nov 1, 2024
155d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: May 30, 2024 → Notified: Nov 1, 2024	155d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Illinois State AGJan 1 · first

New Hampshire State AG+30d

Montana State AG+30d

Oregon State AG+30d

Vermont State AG+30d

Nebraska State AG+30d

Maine State AG+30d

California State AG+30d · this page

Pattern: first filing Jan 1 (IL), last Jan 31 (CA) — a 30-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/sb24-598144
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 31, 2025
Raw hash: 423608d6535dded42c0e224310c1e21dd739210121007d1ea9eb86f33e2cdd78

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityDelta County Memorial Hospital District (Delta Health)

Victim entityDelta County Memorial Hospital District (Delta Health)

Incidentdiscovered May 30, 2024

Stated responseNotified law enforcement

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov