HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)MediumContained

Gerash Steiner Blanton, P.C. (“GSB”)

bd_bca52a371ea0d1ff · schema v1 · pii pii-v2

Severity

Medium

Discovered

Jul 10, 2025

Filed

Oct 17, 2025

To disclose

—

Affected

2state residents only

Linked

2 filings

Confidence

66%

Full breach record for Gerash Steiner Blanton, P.C. (“GSB”) →

Gerash Steiner Blanton, P.C. (GSB) experienced unauthorized network access between June 25 and July 10, 2025. GSB discovered the breach on July 10, 2025, and confirmed on September 25, 2025, that files containing names and Social Security numbers of two Nebraska residents were copied. GSB notified law enforcement, offered one year of credit monitoring via Kroll, and mailed notifications to affected residents on October 17, 2025.

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Incident timeline

undetected · 15 days

Jun 25, 2025

Begins

Jul 10, 2025

Discovered

Oct 17, 2025

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_a8d9a08e7d4397742025-10-17Candidate

Name: Gerash Steiner Blanton, P.C. (“GSB”)
norm: gerash steiner blanton pc gsb

Name: Gerash Steiner Blanton, P.C. (“GSB”)
norm: gerash steiner blanton pc gsb
Industry: Professional Servicesllm

Discovered: Jul 10, 2025
Breach occurred: Jun 25, 2025 – Jul 10, 2025
Undetected for: 15 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 17, 2025
Affected individuals: 2state-resident count only
Data types: Government IDIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Took steps to secure the network
Commenced an investigation
Notified law enforcement and will cooperate with an investigation
Offering the residents one year of complimentary credit monitoring, fraud consultation, and identity theft restoration services through Kroll
Established a dedicated call center
Changes made: Reviewing our safeguards and the security of our systems to help prevent a similar incident in the future
Taken steps to enhance its existing 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 · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGOct 17 · first

Nebraska State AGOct 17 · first · 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://nebraska.gov/ago/data-breach/documents/8c34e426-9e26-4c04-85db-aa9bb07e2364.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 17, 2025
Raw hash: 86f0435d4b7630f3a6a3c187365a70a392ac574fcdc94f2d1adea91ffe3d9014

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityGerash Steiner Blanton, P.C. (“GSB”)

Victim entityGerash Steiner Blanton, P.C. (“GSB”)

Incidentdiscovered Jul 10, 2025

Stated responseTook steps to secure the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov