HackingHealthcareHealthcareCustomer Data InvolvedEmployee Data InvolvedPIIPHIIdentity (basic)Health (basic)LowContained

Madera Community Hospital

bd_8351f5b14e0ee8ed · schema v1 · pii pii-v2

Severity

Low

Discovered

May 29, 2025

Filed

Jul 15, 2026

To disclose

—

Affected

Not disclosed

Linked

4 filings

Confidence

66%

Full breach record for Madera Community Hospital →

Madera Community Hospital notified affected individuals in Nebraska (and Rhode Island) of a cybersecurity incident detected on May 29, 2025. An unauthorized third party gained access to the network for two days in late May 2025. While no definitive proof of data exfiltration was found, potentially impacted files contained personal and protected health information. The hospital engaged forensic experts, notified law enforcement, and offered credit monitoring services.

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Incident timeline

undetected · 2 days

May 27, 2025

Begins

May 29, 2025

Discovered

Jul 15, 2026

Filed

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

California State AGbd_479d88f7af7cf52c2026-07-14 · +1dVerified
Massachusetts State AGQilinbd_fcb8c1bfe4fa02562026-07-17 · +2dVerified
HHS OCRbd_dac17ef542507f972026-07-13 · +2dVerified

Name: Madera Community Hospital
norm: madera community hospital
Domain: reopeningmadera.org

Name: Madera Community Hospital
norm: madera community hospital
Domain: reopeningmadera.org
Industry: Healthcarellm

Discovered: May 29, 2025
Breach occurred: May 27, 2025 – May 29, 2025
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIPHIIdentity (basic)Health (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Initial access: exploit_public_facing

During the incident: Worked with third-party cybersecurity experts to investigate and remediate that activity
Notified law enforcement
Changes made: Further secure our systems to protect your information
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

HHS OCRJul 13 · first

California State AG+1d

Nebraska State AG+2d · this page

Massachusetts State AG+4d

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://nebraska.gov/ago/data-breach/documents/ba962af3-0620-40a9-87ad-d8104472cb72.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 15, 2026
Raw hash: d3e96f68de351f2ba64be22335f98c48dbd18aabb6fb19311609631ca8c2aeaa

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMadera Community Hospital

Victim entityMadera Community Hospital

Incidentdiscovered May 29, 2025

Stated responseWorked with third-party cybersecurity experts to investigate and remediate that activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov