Madison Square Garden Data Breach Confirmed Months After Hacker Attack
Madison Square Garden Entertainment (MSGE) confirmed a data breach that stemmed from a 2025 cybercrime campaign targeting Oracle's E-Business Suite (EBS) solution. The Cl0p ransomware and extortion group exploited zero-day vulnerabilities to gain unauthorized access to data stored by over 100 organizations, including MSG. The incident, which involved unauthorized access between August 10, 2025, and October 21, 2025, and was discovered on December 16, 2025, exposed sensitive personal information, including names and Social Security numbers, of over 131,070 individuals, primarily employees and contractors. The data was subsequently leaked by the cybercriminals after MSG reportedly refused to pay a ransom. The Oracle EBS instance was hosted and managed by a third-party vendor.
Signal context
First seen: Mar 2, 2026
Last updated: Jun 25, 2026
Status: Public signal
Key points
- The breach is part of a larger 2025 Oracle E-Business Suite (EBS) hacking campaign.
- The Cl0p ransomware and extortion group exploited zero-day vulnerabilities to gain access.
- Unauthorized access occurred between August 10, 2025, and October 21, 2025.
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: 🇬🇧 United Kingdom
inferred from source domains
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: supplier or third-party involvement
Impact area: Confidentiality, Availability
Likely asset: User or customer data
- 1 signal in the same sector
- 100 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Madison Square Garden Data Breach Confirmed Months After Hacker Attackhttps://www.securityweek.com/madison-square-garden-data-breach-confirmed-months-after-hacker-attack/Public source from securityweek.com.
Madison Square Garden Entertainment Data Breach Claims Investigated by Lynch Carpenterhttps://www.globenewswire.com/news-release/2026/03/02/3201000/0/en/Madison-Square-Garden-Entertainment-Data-Breach-Claims-Investigated-by-Lynch-Carpenter.htmlPublic source from globenewswire.com.
Madison Square Garden Entertainment impacted by Oracle EBS data breachhttps://www.teiss.co.uk/madison-square-garden-entertainment-impacted-by-oracle-ebs-data-breach/Public source from teiss.co.uk.
Oracle EBS 2025 campaign impacts Madison Square Garden, sensitive data leakedhttps://securityaffairs.com/159930/data-breach/oracle-ebs-2025-campaign-impacts-madison-square-garden.htmlPublic source from securityaffairs.com.
Madison Square Garden Entertainment Data Breach: SSNs Exposedhttps://dapeerlaw.com/madison-square-garden-entertainment-data-breach-ssns-exposed/Public source from dapeerlaw.com.
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