HackingOtherCustomer Data InvolvedFinancial accountHealth (basic)Identity (basic)Government IDPCIPIIMediumContained

MUSEUM ASSOCIATES

bd_3bb176e1fd3d7ef6 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Jul 11, 2025

Filed

Aug 1, 2026

To disclose

—

Affected

44state residents only

Linked

4 filings

Confidence

65%

Full breach record for MUSEUM ASSOCIATES →

LACMA detected suspicious activity on July 11, 2025. Investigation revealed unauthorized access from July 7-11, 2025. Personal information was involved. The organization engaged third-party experts, notified law enforcement, and is offering 2 years of identity theft protection. This is an updated notice.

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Incident timeline

undetected · 4 days

Jul 7, 2025

Begins

Jul 11, 2025

Discovered

Aug 1, 2026

Filed

This filing is one of 4 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

California State AGbd_6c665346b95691ea2026-08-24 · +23dCandidate
Vermont State AGbd_9e9b360babb7e6d72026-08-25 · +24dVerified
Indiana State AGbd_8d8b31a68bd26df42026-06-08 · +54dVerified

Name: MUSEUM ASSOCIATES
norm: museum associates

Name: MUSEUM ASSOCIATES
norm: museum associates
Also named: Museum Associatesdba oflegal entity
Los Angeles County Museum of Art (LACMA)dba oftrade name
Industry: Otherllm

Discovered: Jul 11, 2025
Breach occurred: Jul 7, 2025 – Jul 11, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 19, 2026
Affected individuals: 44state-resident count only
Data types: Financial accountHealth (basic)Identity (basic)Government IDPCIPII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified law enforcement

During the incident: Worked with third-party cybersecurity experts to investigate and remediate
Engaged a data-review firm to analyze impacted files
Notified law enforcement
Further secured our systems to protect your information
Offering complimentary 2-year membership to FinancialShield
Changes made: Further secured our systems to protect your information
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 · 4 filings · 4 states

View merged incident ↗

Indiana State AGJun 8 · first

Massachusetts State AG+54d · this page

California State AG+77d

Vermont State AG+78d

Pattern: first filing Jun 8 (IN), last Aug 25 (VT) — a 78-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://www.mass.gov/doc/2026-1421-museum-associates-dba-los-angeles-museum-of-art-lacma/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 1, 2026
Raw hash: 0cb3884e372a54b5b540f6123416ceee8d480ef3901c854e54f4452d3d0c1c59

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMUSEUM ASSOCIATES

Victim entityMUSEUM ASSOCIATES

Incidentdiscovered Jul 11, 2025

Stated responseWorked with third-party cybersecurity experts to investigate and remediate

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov