HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)MediumContained

Watsonville Community Hospital

bd_af426c2c00d87771 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 29, 2024

Filed

May 20, 2026

To disclose

18 months

Affected

1state residents only

Linked

9 records

Confidence

66%

Full breach record for Watsonville Community Hospital →2 incidents on file

Watsonville Community Hospital notified the New Hampshire Attorney General of a data event affecting one NH resident. Unauthorized access occurred Nov 25-30, 2024; discovered Nov 29, 2024. Data included names, SSNs, and clinical info. WCH isolated systems, engaged forensic review, notified law enforcement, and provided 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d18 months 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 · 4 days

discovery → filing · 18 months / 537 days

Nov 25, 2024

Begins

Nov 29, 2024

Discovered

May 20, 2026

Filed

vs. sector median

+68 wks slower

This filing is one of 9 records about the same incident.View merged incident

A leak claim by termite about this victim was first seen 525 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitetermitebd_b9adf15399e0394d2024-12-05 · +530dVerified by operator

Regulatory filings (7) · sorted by filing gap

Illinois State AGbd_1be423ffa61832652025-11-01 · +200dVerified by operator
Maine State AGbd_66074d82561ed7252025-10-17 · +215dVerified by operator
Massachusetts State AGbd_49347cffef2506702025-10-16 · +216dVerified by operator
California State AGbd_fd51d9e52c7b09b22025-10-16 · +216dVerified by operator

Show 3 more filings ↓up to 505d gap

Montana State AGbd_64d26d9110233fee2025-10-15 · +217dVerified by operator
Nebraska State AGbd_baf908a2789a70962025-10-15 · +217dVerified by operator
HHS OCRbd_5e3254a29f6492372024-12-31 · +505dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Watsonville Community Hospital
norm: watsonville community hospital
Domain: watsonvillehospital.com
Industry: Healthcarellm

Discovered: Nov 29, 2024
Breach occurred: Nov 25, 2024 – Nov 30, 2024
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 30, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDHealth (basic)
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: provided preliminary notice to the U.S. Department of Health and Human Services (“HHS”) and prominent media pursuant to the Health Insurance Portability and Accountability Act (“HIPAA”)issued supplemental notice to HHS on October 15, 2025issued a second supplemental notice to HHS on May 20, 2026

During the incident: Took portions of our network offline
Isolated the affected systems
Began an investigation into the activity
Performed a comprehensive and time-intensive third-party review of the impacted files
Undertook a detailed internal review of its records
Notified potentially affected individuals via U.S. mail, website, and media notice
Notified federal law enforcement regarding the event
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for twenty-four (24) months through TransUnion
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Implemented additional safeguards and training to its employees
Reviewed and enhanced our technical, administrative, and physical safeguards, policies, and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 months(537 days from discovery to filing)
Compliance flags: Leak >180d
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.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 7 states

View merged incident ↗

HHS OCRDec 31 · first

Montana State AG+288d

Nebraska State AG+288d

Massachusetts State AG+289d

California State AG+289d

Maine State AG+290d

Illinois State AG+305d

New Hampshire State AG+505d · this page

Pattern: first filing Dec 31 (CA), last May 20 (NH) — a 505-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://mm.nh.gov/files/uploads/doj/remote-docs/watsonville-community-hospital-20260520.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 20, 2026
Raw hash: b5395258fe85f3df814af05669dbbb897d5b5bce8d71a7eca61b89e37b3d068c

Linked disclosures

Ransomware claims (1)

Regulatory filings (7) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityWatsonville Community Hospital

Incidentdiscovered Nov 29, 2024

Stated responseTook portions of our network offline

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov