HackingHealthcareHealthcareVulnerability ExploitTargetedData ExfiltratedIdentity (basic)Government IDHealth (basic)PHICriticalContained

Nacogdoches Memorial Hospital

bd_532a9f2d9cbd8c1a · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jan 31, 2026

Filed

Mar 31, 2026

To disclose

8 weeks

Affected · nationwide

257,0735 in this filing

Linked

5 filings

Confidence

65%

Full breach record for Nacogdoches Memorial Hospital →

Nacogdoches Memorial Hospital reported a cyber-attack on Jan 15, 2026, discovered Jan 31, 2026. Unauthorized access compromised PHI and PII (SSN, DOB, MRN) of 257,073 individuals. Law enforcement notified; network resecured. Notices sent March 31, 2026.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jan 31, 2026 → Filed with AG Mar 31, 202659d ⏱ ME AG >30d8 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 16 days

discovery → filing · 8 weeks / 59 days

Jan 15, 2026

Begins

Jan 31, 2026

Discovered

Mar 31, 2026

Filed

vs. sector median

4 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_10c07a29e1f5befd2026-03-31Verified
Nebraska State AGbd_23cf487587874c192026-03-31Verified
HHS OCRbd_e894e0dd4e632bf32026-03-30 · +1dVerified
Indiana State AGbd_ba4426b59fd205cd2026-03-12 · +19dCandidate

Name: Nacogdoches Memorial Hospital
norm: nacogdoches memorial hospital
Domain: nacmem.org

Name: Nacogdoches Memorial Hospital
norm: nacogdoches memorial hospital
Domain: nacmem.org
Industry: Healthcarellm

Discovered: Jan 31, 2026
Breach occurred: Jan 15, 2026
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 31, 2026
Affected individuals: 257,073state + nationwide
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified Maine Attorney General
Initial access: exploit_public_facing

During the incident: Notified law enforcement
Initiated incident response plan
Commenced an investigation
Resecured computer network environment
Hardened and enhanced network security
Changes made: Implemented remediation measures to prevent recurrence
Enhanced network security
Enhancing cyber preparedness through additional awareness training
Updating procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(59 days from discovery to filing)
Compliance flags: ME AG >30d · 59d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jan 31, 2026
→ Filed with AG: Mar 31, 2026
59d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 31, 2026 → Filed with AG: Mar 31, 2026	59d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGMar 12 · first

HHS OCR+18d

New Hampshire State AG+19d

Nebraska State AG+19d

Maine State AG+19d · this page

Pattern: first filing Mar 12 (IN), last Mar 31 (ME) — a 19-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/ebcabbec-590c-4fd3-b97c-555fd8ced542.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 31, 2026
Raw hash: 47a21bcf511bb90e14bad6ae820933b0c77ad005d01d028638f9f5473fb6af4a

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityNacogdoches Memorial Hospital

Victim entityNacogdoches Memorial Hospital

Incidentdiscovered Jan 31, 2026

Stated responseNotified law enforcement

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov