DisclosureLens
HackingTechnologyInformationVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedGovernment IDIdentity (basic)MediumContained

Madison Square Garden Entertainment Corp.

bd_ddcd5ecbe8f96f1a · schema v1 · pii pii-v2

Severity

Medium

Discovered

Nov 1, 2025

Filed

Feb 26, 2026

To disclose

—

Affected

11state residents only

Linked

6 filings

Confidence

66%
Full breach record for Madison Square Garden Entertainment Corp. →4 incidents on file

Madison Square Garden Entertainment Corp. notified Nebraska AG that unauthorized access to its Oracle eBusiness Suite occurred in August 2025, exploiting a previously undisclosed vulnerability. The breach exposed names and Social Security numbers of 11 Nebraska residents. Notifications were mailed starting February 26, 2026, offering one year of credit monitoring.

Incident timeline

undetected · 92 days

Aug 1, 2025

Begins

Nov 1, 2025

Discovered

Feb 26, 2026

Filed

This filing is one of 6 filings about the same incident.View merged incident
Part of ORACLE CORPORATION supply-chain incident (2025) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Show 1 more filing ↓

Filing propagation · 6 filings · 6 states

View merged incident ↗
Indiana State AGFeb 26 · first
Vermont State AGFeb 26 · first
New Hampshire State AGFeb 26 · first
Massachusetts State AGFeb 26 · first
California State AGFeb 26 · first
Nebraska State AGFeb 26 · 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.