HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHealth (basic)PHICriticalActive

COVENANT HEALTH

bd_0201f6c42742ffa2 · schema v1 · pii pii-v1

Severity

Critical

Discovered

May 26, 2025

Filed

Dec 31, 2025

To disclose

31 weeks

Affected

154,188state residents only

Linked

13 filings

Confidence

66%

Full breach record for COVENANT HEALTH →2 incidents on file

Covenant Health, Inc. filed a supplemental notification with the New Hampshire Attorney General regarding a data security incident. An unauthorized party accessed the IT environment on May 18, 2025, after unusual activity was detected on May 26, 2025. The breach affected 154,188 New Hampshire residents, exposing names, addresses, DOBs, SSNs, medical record numbers, and treatment information. Covenant Health engaged forensic specialists, notified law enforcement, and offered one year of Experian IdentityWorks to affected individuals. Notifications were mailed on December 31, 2025.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d31 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 · 8 days

discovery → filing · 31 weeks / 219 days

May 18, 2025

Begins

May 26, 2025

Discovered

Dec 31, 2025

Filed

vs. sector median

+19 wks slower

This filing is one of 13 about the same incident.View merged incident

A leak claim by qilin about this victim predates this filing by 220 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_072a28e8c90a0e6b2025-12-31Verified
Nebraska State AGbd_71ad76effc8a5b172025-12-31Verified
Vermont State AGbd_ef41caaf4af9cbfe2025-12-31Verified
Illinois State AGbd_8e8c65f89486fef22026-01-01 · +1dVerified by operator

Show 6 more filings ↓up to 173d gap

California State AGbd_9f5aba5bf6f7a9782026-01-02 · +2dCandidate
Montana State AGbd_e35a31c1ca87c68c2026-01-02 · +2dVerified
Texas State AGbd_95ce0e0243eda1122026-01-05 · +5dVerified
Massachusetts State AGbd_1b739003e1664c6a2025-07-11 · +173dVerified by operator
HHS OCRbd_5c5e88654283c5d52025-07-11 · +173dVerified by operator
New Hampshire State AGbd_5d1f9c31004b5e962025-07-11 · +173dVerified by operator

Showing first 10 of 12 linked disclosures.

Name: COVENANT HEALTH
norm: covenant health
Domain: covenanthealth.net

Name: COVENANT HEALTH
norm: covenant health
Domain: covenanthealth.net
Industry: Healthcarellm

Discovered: May 26, 2025
Breach occurred: May 18, 2025
Undetected for: 8 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 31, 2025
Affected individuals: 154,188state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement and appropriate agencies
Initial access: valid_credentials

During the incident: Engaged industry-leading third-party information technology and forensic specialists to conduct a thorough investigation
Moved quickly to investigate and respond to the incident
Assessed the security of our systems
Restored functionality to our environment
Notified potentially affected individuals
Provided to federal law enforcement and appropriate agencies
Established a dedicated, toll-free call center
Offered complimentary credit monitoring and identity protection services
Changes made: Enhanced the security of its IT environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 31 weeks(219 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 · 11 filings · 9 states

View merged incident ↗

Massachusetts State AGJul 11 · first

HHS OCRJul 11 · first

New Hampshire State AGJul 11 · first

Maine State AG+173d

Nebraska State AG+173d

Vermont State AG+173d

New Hampshire State AG+173d · this page

Illinois State AG+174d

California State AG+175d

Montana State AG+175d

Texas State AG+178d

Pattern: first filing Jul 11 (MA), last Jan 5 (TX) — a 178-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 12 — the full spread may be wider.

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/covenant-health-20251231.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 31, 2025
Raw hash: fde5bb94c9f2548ec8dc8e1edf6a1674202a5328eab433b475956eeaeced3005

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityCOVENANT HEALTH

Victim entityCOVENANT HEALTH

Incidentdiscovered May 26, 2025

Stated responseEngaged industry-leading third-party information technology and forensic specialists to conduct a thorough investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov