Madison Square Garden Data Breach Confirmed Months After Hacker Attack

Madison Square Garden has confirmed being impacted by a data breach stemming from a cybercrime campaign targeting customers of Oracle’s E-Business Suite (EBS) solution.

In the Oracle EBS hacking campaign, the Cl0p ransomware and extortion group exploited zero-day vulnerabilities to gain access to data stored by more than 100 organizations in the enterprise management software.

Madison Square Garden (MSG), the world-famous arena located in New York City, was named by the hackers as a victim of the campaign in November 2025.

Data allegedly stolen from the company — more than 210GB of archive files — was leaked by the cybercriminals soon after, indicating that it had refused to pay a ransom.

MSG did not respond to repeated requests for comment at the time. However, it has now confirmed suffering a data breach and it has started notifying individuals whose personal information was compromised as a result of the cybersecurity incident.

According to notifications from MSG Entertainment, the impacted Oracle EBS instance is hosted and managed by a third-party vendor, whose investigation found that hackers stole data in August 2025.

The entertainment company said personal information, including names and SSNs, was compromised.

It’s unclear how many people are affected in total, but MSG Entertainment told the Maine Attorney General’s Office that 11 of the state’s residents are impacted.

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