HackingRetail & ConsumerHospitalityRetailStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPCIFinancial accountIdentity (basic)LowContained

Madison Square Garden Entertainment Corp.

bd_f8a97af7137b8007 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 27, 2016

Filed

Nov 22, 2016

To disclose

26 days

Affected

Not disclosed

Linked

6 filings

Confidence

69%

Full breach record for Madison Square Garden Entertainment Corp. →5 incidents on file

The Madison Square Garden Company (MSG) reported a cyberattack affecting payment card data (magnetic stripe data) at its venues from Nov 2015 to Oct 2016. Unauthorized access allowed installation of malware capturing card data. MSG engaged forensic firms, reset passwords, implemented MFA, and notified law enforcement. No specific count of affected individuals was disclosed due to lack of customer contact info.

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Incident timeline

undetected · 353 days

discovery → filing · 26 days

Nov 9, 2015

Begins

Oct 27, 2016

Discovered

Nov 22, 2016

Filed

vs. sector median

4 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Montana State AGbd_07b27eb35a2469f72016-11-22Candidate
Oregon State AGbd_95f9788c687e3e9f2016-11-22Verified
New Hampshire State AGbd_b50a7bf12bc6a4732016-11-22Verified
California State AGbd_bac334239d2900d92016-11-22Verified

Show 1 more filing ↓up to 1d gap

South Carolina State AGbd_c8880f90aa7d27ff2016-11-23 · +1dVerified

Name: BakerHostetler LLP
norm: bakerhostetler
Domain: msgentertainment.com

Name: Madison Square Garden Entertainment Corp.
norm: madison square garden entertainment
Domain: msgentertainment.com
Industry: Retail & ConsumerllmHospitalityllm

Discovered: Oct 27, 2016
Breach occurred: Nov 9, 2015 – Oct 24, 2016
Undetected for: 353 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 22, 2016
Affected individuals: Not disclosed
Data types: PCIFinancial accountIdentity (basic)
Data elements: Financial account numberName
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 300-399dexposure 300-399d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Attorney General Bob FergusonProviding substitute notification pursuant to Wash. Rev. Code Ann. §19.255.010
Initial access: external_remote_services

During the incident: Engaged leading computer security firms to examine its network
Resetting all enterprise passwords
Blocking certain network communication attempts
Implementing two-factor authentication
Removing and cleaning devices affected by the attack
Notified law enforcement about the incident
Established a dedicated call center
Changes made: Implemented enhanced security measures
Strengthen the security of its network environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 days(26 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Montana State AGNov 22 · first

Oregon State AGNov 22 · first

New Hampshire State AGNov 22 · first

California State AGNov 22 · first

Washington State AGNov 22 · first · this page

South Carolina State AG+1d

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.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM9657.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 22, 2016
Raw hash: ab1254c9113de793298c7914ad37d47566046373727e0a69fcdf3cead6be41e7

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityBakerHostetler LLP

Victim entityMadison Square Garden Entertainment Corp.

Incidentdiscovered Oct 27, 2016

Stated responseEngaged leading computer security firms to examine its network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com