HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryHealth (basic)Identity (basic)Government IDMediumContained

Clarinda Regional Health Center

bd_5ab406081578f5a7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 15, 2025

Filed

Jun 3, 2026

To disclose

24 weeks

Affected

4state residents only

Linked

8 filings

Confidence

66%

Full breach record for Clarinda Regional Health Center →

Clarinda Regional Health Center notified individuals of a data security incident occurring in October 2025, discovered in December 2025. Unauthorized actors accessed personal information, including names. The organization engaged cybersecurity experts, reviewed files, and provided 24 months of free credit monitoring and fraud assistance via Cyberscout. The incident is contained.

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Massachusetts clock✗ MA AG >90d24 weeks discovery → filing

Incident timeline

undetected · 75 days

discovery → filing · 24 weeks / 170 days

Oct 1, 2025

Begins

Dec 15, 2025

Discovered

Jun 3, 2026

Filed

vs. sector median

+12 wks slower

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

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitelockbit5bd_f146826d713c3bc02025-10-08 · +238dVerified by operator

Regulatory filings (6) · sorted by filing gap

Maine State AGbd_8c15e8d2a940b2042026-06-03Verified by operator
Vermont State AGbd_9f404185e4333ea32026-06-03Verified by operator
Nebraska State AGbd_1e4563862efc63372026-06-01 · +2dVerified by operator
New Hampshire State AGbd_37dfc805ee34f57c2026-06-01 · +2dVerified

Show 2 more filings ↓up to 70d gap

Iowa State AGbd_c83dd89c82f2e71d2026-06-01 · +2dVerified
HHS OCRbd_563f62e663ef1c802026-03-25 · +70dVerified

Name: Clarinda Regional Health Center
norm: clarinda regional health center
Domain: clarindahealth.com

Name: Clarinda Regional Health Center
norm: clarinda regional health center
Domain: clarindahealth.com
Industry: Healthcarellm

Discovered: Dec 15, 2025
Breach occurred: Oct 1, 2025 – Dec 15, 2025
Undetected for: 75 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 1, 2026
Affected individuals: 4state-resident count only
Data types: Health (basic)Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1114 Email Collection
Threat actor: External

During the incident: Engaged cybersecurity experts to assist with the process
Undertook a comprehensive review of the relevant files with the assistance of a third-party vendor
Provided you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Provided proactive fraud assistance
Changes made: Implemented measures to enhance security and minimize the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(170 days from discovery to filing)
Compliance flags: MA AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

HHS OCRMar 25 · first

Nebraska State AG+68d

New Hampshire State AG+68d

Iowa State AG+68d

Maine State AG+70d

Vermont State AG+70d

Massachusetts State AG+70d · this page

Pattern: first filing Mar 25 (IA), last Jun 3 (MA) — a 70-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.mass.gov/doc/2026-900-clarinda-regional-health-center/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 3, 2026
Raw hash: d437fd0e46f3e3b020e2a39dbd6e4133c51aa9252c3d4c0bacd4e061871c12f1

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entityClarinda Regional Health Center

Victim entityClarinda Regional Health Center

Incidentdiscovered Dec 15, 2025

Stated responseEngaged cybersecurity experts to assist with the process

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov