MalwareOtherRansomwareCapture Stored DataData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

The Walters Art Museum

bd_b011fe186a7b076f · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 18, 2023

Filed

Sep 27, 2024

To disclose

45 weeks

Affected

8state residents only

Linked

5 filings

Confidence

65%

Full breach record for The Walters Art Museum →

The Walters Art Museum notified the NH AG of a data event affecting 8 NH residents. Unauthorized access occurred Oct 10–Nov 18, 2023, detected Nov 18, 2023. PII was accessed. The museum engaged third-party specialists, notified law enforcement, and offered credit monitoring via Experian.

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Incident timeline

undetected · 39 days

discovery → filing · 45 weeks / 314 days

Oct 10, 2023

Begins

Nov 18, 2023

Discovered

Aug 28, 2024

Scope determined

Sep 27, 2024

Filed

vs. sector median

+39 wks slower

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Maine State AGbd_1d0cc9c91a47089e2024-09-27Candidate
Vermont State AGbd_425023d2d278c0f92024-09-27Verified
Montana State AGbd_7257c63a9f5d3b982024-09-27Verified by operator
Indiana State AGbd_8b413c731a27125d2024-09-27Verified

Name: The Walters Art Museum
norm: the walters art museum

Name: The Walters Art Museum
norm: the walters art museum
Also named: The Trustees of the Walters Art Gallery, Inc.dba oflegal entity
the Walters Art Museumdba oftrade name
Industry: Otherllm

Discovered: Nov 18, 2023
Breach occurred: Oct 10, 2023 – Nov 18, 2023
Undetected for: 39 daysoccurrence → discovery
Materiality determined: Aug 28, 2024
Notification sent: Sep 27, 2024
Affected individuals: 8state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementNotified New Hampshire Attorney General

During the incident: Investigated and responded to the event
Assessed the security of its network
Notified potentially affected individuals
Notified federal law enforcement regarding the event
Provided access to credit monitoring services through Experian
Provided written notice to relevant state regulators
Provided written notice to the three major credit reporting agencies
Changes made: Regularly reviews and enhances existing policies and procedures related to data privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 45 weeks(314 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Maine State AGSep 27 · first

Vermont State AGSep 27 · first

Montana State AGSep 27 · first

Indiana State AGSep 27 · first

New Hampshire State AGSep 27 · 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://mm.nh.gov/files/uploads/doj/remote-docs/trustees-walters-art-gallery-museum-20240927.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 27, 2024
Raw hash: 7088b6580aab6ff9280dd48deeac1fd60eb95b871b5110306038c1ed3efdadbb

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityThe Walters Art Museum

Victim entityThe Walters Art Museum

Incidentdiscovered Nov 18, 2023

Stated responseInvestigated and responded to the event

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov