HackingHealthcareHealthcareCustomer Data InvolvedIdentity (basic)MediumContained

McKenzie Memorial Hospital

bd_457ee2e873164bb4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 15, 2025

Filed

Jul 24, 2025

To disclose

14 weeks

Affected · nationwide

54,0166 in this filing

Linked

6 filings

Confidence

66%

Full breach record for McKenzie Memorial Hospital →

McKenzie Memorial Hospital experienced an external system breach (hacking) between April 14-15, 2025. The incident affected 54,016 individuals, including 6 Maine residents. The breach involved unauthorized access to limited personal information (names). The hospital notified law enforcement, engaged third-party investigators, and offered 12 months of credit monitoring.

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Maine clockDiscovered Apr 15, 2025 → Filed with AG Jul 24, 2025100d ✗ ME AG >90d14 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 1 days

discovery → filing · 14 weeks / 100 days

Apr 14, 2025

Begins

Apr 15, 2025

Discovered

Jul 24, 2025

Filed

vs. sector median

+2 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Nebraska State AGbd_19338d9fd8ccb5b92025-07-24Verified
Massachusetts State AGbd_3c9e3624eb9b32012025-07-24Verified
Vermont State AGbd_3cb138a829f15ef92025-07-24Verified
HHS OCRbd_4cdd9242a38ba23f2025-07-24Verified

Show 1 more filing ↓

New Hampshire State AGbd_aa5561ddf0b0a58f2025-07-24Verified

Name: McKenzie Memorial Hospital
norm: mckenzie memorial hospital

Name: McKenzie Memorial Hospital
norm: mckenzie memorial hospital
Industry: Healthcarellm

Discovered: Apr 15, 2025
Breach occurred: Apr 14, 2025 – Apr 15, 2025
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Jul 24, 2025
Affected individuals: 54,016state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified law enforcement
Initial access: exploit_public_facing

During the incident: Took immediate steps to secure the network and remediate the incident
Notified law enforcement
Engaged third-party specialists to investigate
Conducted a thorough investigation
Offering 12 months of complimentary credit monitoring and identity protection services
Changes made: Strengthened our network security
Reviewed our policies and procedures related to data protection to help prevent similar incidents from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(100 days from discovery to filing)
Compliance flags: ME AG >90d · 100d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Apr 15, 2025
→ Filed with AG: Jul 24, 2025
100d 90 days ME AG >90d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Apr 15, 2025 → Filed with AG: Jul 24, 2025	100d	90 days	ME AG >90d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Nebraska State AGJul 24 · first

Massachusetts State AGJul 24 · first

Vermont State AGJul 24 · first

HHS OCRJul 24 · first

New Hampshire State AGJul 24 · first

Maine State AGJul 24 · 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/678493dd-941b-4f62-9b2a-9c9789de2ecc.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 24, 2025
Raw hash: ffc30896b02f236a1e848f048426324d49b76935515af22f03f9de0cc8f20f27

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMcKenzie Memorial Hospital

Victim entityMcKenzie Memorial Hospital

Incidentdiscovered Apr 15, 2025

Stated responseTook immediate steps to secure the network and remediate the incident

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov