HackingOtherData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)MediumContained

Houston Symphony

bd_d2adee11ef64e127 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Feb 5, 2025

Filed

Aug 19, 2025

To disclose

—

Affected

5state residents only

Linked

5 filings

Confidence

66%

Full breach record for Houston Symphony →

Houston Symphony Society reported a data event to the Nebraska Attorney General on August 19, 2025. Unauthorized access to network systems occurred on or about February 5, 2025, resulting in the potential exposure of names and Social Security numbers for approximately five Nebraska residents. The Symphony engaged forensic specialists, secured its network, and provided 24 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d

Incident timeline

Feb 5, 2025

Begins

Feb 5, 2025

Discovered

Aug 19, 2025

Filed

This filing is one of 5 about the same incident.View merged incident

A leak claim by qilin about this victim predates this filing by 172 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteqilinbd_86eee7489d4a07292025-02-28 · +172dVerified by operator

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_6beb0c1e6b1071ce2025-08-19Verified by operator
Massachusetts State AGbd_db2092e68b9561ac2025-08-20 · +1dVerified by operator
Texas State AGbd_5bed8bf384fff7b82025-08-22 · +3dVerified by operator

Name: Constangy, Brooks, Smith & Prophete, LLP
norm: constangy brooks smith prophete

Name: Houston Symphony
norm: houston symphony
Domain: houstonsymphony.org
Industry: Otherllm

Discovered: Feb 5, 2025
Breach occurred: Feb 5, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 19, 2025
Affected individuals: 5state-resident count only
Data types: Government IDIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: Submitted Notice of Data Event to Nebraska Attorney General

During the incident: Engaged digital forensics specialists to assist with an investigation
Secured its network systems
Undertook a comprehensive review of the files
Provided written notice to approximately five (5), Nebraska residents
Implemented additional safeguards and training
Provided access to credit monitoring services for 24 months, through TransUnion
Changes made: Implemented additional safeguards and training
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Indiana State AGAug 19 · first

Nebraska State AGAug 19 · first · this page

Massachusetts State AG+1d

Texas 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/c47a7d6f-8240-43e0-bc4e-edcc9979a59b.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 19, 2025
Raw hash: 8d5064bb6da3fb4283ed3d2d8606c14567550566e3b0b4e041d8f204dbe9c3ea

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityConstangy, Brooks, Smith & Prophete, LLP

Victim entityHouston Symphony

Incidentdiscovered Feb 5, 2025

Stated responseEngaged digital forensics specialists to assist with an investigation

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancenebraska.gov