HackingOtherTargetedIdentity (basic)Government IDFinancial accountMediumContained

Winterthur Museum, Garden & Library

bd_00bc8966411b3d46 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 27, 2022

Filed

Mar 18, 2022

To disclose

7 weeks

Affected

6state residents only

Linked

5 filings

Confidence

66%

Full breach record for Winterthur Museum, Garden & Library →

Winterthur Museum, Garden & Library notified the NH AG of a data event affecting 6 NH residents. Unauthorized access occurred Jan 17, 2022; discovered Jan 27, 2022. Data included names, SSNs, and financial account info. Response included forensic investigation, notifications, and 12 months of Experian credit monitoring.

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Incident timeline

undetected · 10 days

discovery → filing · 7 weeks / 50 days

Jan 17, 2022

Begins

Jan 27, 2022

Discovered

Mar 18, 2022

Filed

vs. sector median

+1 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

Indiana State AGbd_4b4c762d6329e5d22022-03-14 · +4dVerified
Maine State AGbd_ba297558daccf96d2022-03-14 · +4dCandidate
Massachusetts State AGbd_c92d70da8409e6622022-03-14 · +4dVerified
Delaware State AGbd_cebca8dab0365a4e2022-03-14 · +4dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Winterthur Museum, Garden & Library
norm: winterthur museum garden library
Domain: winterthur.org
Industry: Otherllm

Discovered: Jan 27, 2022
Breach occurred: Jan 17, 2022
Undetected for: 10 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 14, 2022
Affected individuals: 6state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General Consumer Protection Bureau

During the incident: Took steps to secure its systems
Launched an investigation with the assistance of third-party forensic specialists
Conducted a thorough review of each file to identify whether any personal information was contained therein
Provided written notice to all affected individuals
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for twelve (12) months, through Experian
Changes made: Implementing additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(50 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 ↗

Indiana State AGMar 14 · first

Maine State AGMar 14 · first

Massachusetts State AGMar 14 · first

Delaware State AGMar 14 · first

New Hampshire State AG+4d · 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/winterthur-museum-garden-library-20220318.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 18, 2022
Raw hash: 1d510dae8a6a3c2e882f158a33d5db6854e799dc33ba96c43a933322682ed950

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityWinterthur Museum, Garden & Library

Incidentdiscovered Jan 27, 2022

Stated responseTook steps to secure its systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov