HackingOtherStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Musical Instrument Museum

bd_4a5e72411ed094a6 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Dec 2, 2021

To disclose

—

Affected

1state residents only

Linked

3 filings

Confidence

65%

Full breach record for Musical Instrument Museum →

Musical Instrument Museum notified Montana residents that an unauthorized third party accessed employee email accounts between June 30 and August 17, 2021. The accounts contained personal information. The museum secured accounts, engaged forensic investigators, and offered credit monitoring.

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Incident timeline

Jun 30, 2021

Begins

Dec 2, 2021

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_8d50733ac8f2e2df2021-12-02Verified
Indiana State AGbd_c70aaefea7d2e70f2021-12-02Verified

Name: Musical Instrument Museum
norm: musical instrument museum

Name: Musical Instrument Museum
norm: musical instrument museum
Industry: Otherllm

Discovered: —
Breach occurred: Jun 30, 2021 – Aug 17, 2021
Materiality determined: —
Notification sent: Oct 18, 2021
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Promptly secured the email accounts
Began an internal investigation
Engaged a forensic security firm to investigate and confirm the security of our email and computer systems
Offering a complimentary one-year membership of Experian IdentityWorks SM Credit 3B
Changes made: Enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGDec 2 · first

Indiana State AGDec 2 · first

Montana State AGDec 2 · 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.

Source URL: https://dojmt.gov/wp-content/uploads/OCP/Consumer-Notification-Letter-120.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 2, 2021
Raw hash: 213317c598c367345a0c9baa77c9a2e63f32b72b5472d03bc885e86f014567fc

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMusical Instrument Museum

Victim entityMusical Instrument Museum

IncidentUnauthorized Access

Stated responsePromptly secured the email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov