Social EngineeringFinancial ServicesFinancePhishingCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

Commonwealth Trust Company

bd_d73d0b85e67d0529 · schema v1 · pii pii-v2

Severity

Medium

Discovered

May 13, 2025

Filed

Sep 19, 2025

To disclose

—

Affected

1state residents only

Linked

3 filings

Confidence

66%

Full breach record for Commonwealth Trust Company →

Commonwealth Trust Company (CTC) notified Nebraska AG of a phishing incident affecting one Nebraska resident. An unauthorized actor accessed an employee email account on May 13, 2025, exfiltrating names, SSNs, and PHI. CTC discovered the breach on May 13, completed its review on August 4, and sent notices on September 19, 2025. Remediation included credit monitoring and enhanced security measures.

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Incident timeline

May 13, 2025

Begins

May 13, 2025

Discovered

Sep 19, 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

Massachusetts State AGbd_f4463f8f58faa4f02025-09-19Verified
New Hampshire State AGbd_f6b684516e1c38922025-09-22 · +3dCandidate

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

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

Discovered: May 13, 2025
Breach occurred: May 13, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 19, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Regulator citations: providing written notice of this incident to relevant state regulators
Initial access: phishing_link

During the incident: Moved quickly to investigate and respond to the incident
Assess the security of its email tenant
Identify potentially affected individuals
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for two (2) years, through TransUnion
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Changes made: Implemented supplemental technical and administrative security measures
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 ↗

Massachusetts State AGSep 19 · first

Nebraska State AGSep 19 · first · this page

New Hampshire State AG+3d

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://nebraska.gov/ago/data-breach/documents/8b329fd3-168f-458a-b11f-f348f90a7897.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 19, 2025
Raw hash: 3fdbcefd6ca58b5188c9e2e012ee0ad404803d528c794f58bfaea84732502ba8

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCommonwealth Trust Company

Victim entityCommonwealth Trust Company

Incidentdiscovered May 13, 2025

Stated responseMoved quickly to investigate and respond to the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov