HackingFinancial ServicesHealthcareFinanceStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountPHIHealth (basic)MediumContained

Commonwealth Trust Company

bd_f6b684516e1c3892 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Sep 22, 2025

To disclose

—

Affected

4state residents only

Linked

3 filings

Confidence

66%

Full breach record for Commonwealth Trust Company →

Commonwealth Trust Company notified the NH Attorney General that an unauthorized actor accessed an employee email account on May 13, 2025. The incident affected 4 New Hampshire residents, exposing names, SSNs, financial account info, and PHI (medical records, prescriptions). The company secured the account, investigated, and offered 24 months of credit monitoring.

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Incident timeline

May 13, 2025

Begins

Sep 22, 2025

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Nebraska State AGbd_d73d0b85e67d05292025-09-19 · +3dVerified
Massachusetts State AGbd_f4463f8f58faa4f02025-09-19 · +3dVerified

Name: Commonwealth Trust Company
norm: commonwealth trust

Name: Commonwealth Trust Company
norm: commonwealth trust
Domain: commonwealth-trust.com
Industry: Financial ServicesllmHealthcarellm

Discovered: —
Breach occurred: May 13, 2025
Materiality determined: —
Notification sent: Sep 19, 2025
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHIHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Providing written notice of this incident to relevant state regulators, as necessary
Initial access: valid_credentials

During the incident: Secured the account
Undertook a comprehensive investigation
Implemented supplemental technical and administrative security measures
Providing access to Single Bureau Credit Monitoring, Single Bureau Credit Report, and Single Bureau Credit Score services at no charge
Providing proactive fraud assistance
Changes made: Implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Nebraska State AGSep 19 · first

Massachusetts State AGSep 19 · first

New Hampshire State AG+3d · 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://mm.nh.gov/files/uploads/doj/remote-docs/commonwealth-trust-20250922.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 22, 2025
Raw hash: 1d44ceec9f573b96ef9d4add7e764e93049e1829ff7cfcad36fcb20d219df572

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCommonwealth Trust Company

Victim entityCommonwealth Trust Company

IncidentUnauthorized Access

Stated responseSecured the account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov