Where does the Madison Square Garden Entertainment Corp. case file come from?

Every entry is taken from the breach report Madison Square Garden Entertainment Corp. lodged with the California Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Madison Square Garden Entertainment Corp. Data Breach

This file collects the dated facts on record for the Madison Square Garden Entertainment Corp. incident. The state report is dated February 26, 2026. The incident itself is dated August 10, 2025.

Timeline

200 days separate the incident date from the date it was reported.

August 10, 2025Incident dateWhen the filing says the breach took place.
February 26, 2026Report filed in CaliforniaDate the notice was lodged with the California Attorney General.

Case facts

Filing state: California
Date reported: February 26, 2026
Incident date: August 10, 2025
Receiving office: California Attorney General

Case notes

Madison Square Garden Entertainment Corp. has officially reported a data breach incident to California regulators. The company filed its notice on February 26, 2026, documenting an event that occurred on August 10, 2025.

The public record indicates that this incident involved personal information. At this time, the specific categories of data involved are not detailed within the public filing. Madison Square Garden Entertainment Corp. has stated that an investigation into the matter is ongoing to determine the full scope and impact.

While the specific nature of the compromised information is still being investigated, individuals who receive notification letters are advised to carefully review the information provided by the company.

General protective measures include monitoring all financial account statements and credit reports for any suspicious or unauthorized activity. It is also recommended to use strong, unique passwords for all online accounts and enable multi-factor authentication wherever possible.

Those potentially affected should pay close attention to official communications from Madison Square Garden Entertainment Corp. for further guidance. Remain cautious of unsolicited communications that claim to offer assistance, as these could be phishing attempts.

Questions about this case file

Where does the Madison Square Garden Entertainment Corp. case file come from?: Every entry is taken from the breach report Madison Square Garden Entertainment Corp. lodged with the California Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

California data breaches

Filing source: California Attorney General

Named in the Madison Square Garden Entertainment Corp. breach?

Attach your notice and a short note. An attorney checks it against this case file at no cost.

Timeline

Case facts

Case notes

Questions about this case file

More California case files