DisclosureLens
UnknownTelecom & MediaInformationEmployee Data InvolvedGovernment IDIdentity (basic)Financial accountEmploymentMediumContained

Milwaukee Symphony Orchestra

bd_a02e16d07f7be7bb · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 10, 2026

Filed

Aug 7, 2026

To disclose

8 weeks

Affected

2state residents only

Linked

2 filings

Confidence

65%
Full breach record for Milwaukee Symphony Orchestra

Milwaukee Symphony Orchestra, Inc. notified employees of a data security incident discovered on June 10, 2026. The incident involved a file containing W-2 form information, including Social Security numbers, names, addresses, and wage/tax data. The organization engaged cybersecurity professionals and legal counsel, contained the incident, and is offering 24 months of credit monitoring. No specific attack vector or threat actor was identified.

Massachusetts clock MA AG >30d8 weeks discovery → filing

Incident timeline

discovery → filing · 8 weeks / 58 days

Jun 10, 2026

Discovered

Aug 7, 2026

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

Filing propagation · 2 filings · 2 states

View merged incident ↗
Massachusetts State AGAug 7 · 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.