AccidentalOtherMisdeliverySupply Chain (3P Vendor)Employee Data InvolvedGovernment IDIdentity (basic)EmploymentMediumContained

Jewish Community Center of Greater Rochester

bd_139fd1b4a235c031 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 7, 2025

Filed

Apr 23, 2026

To disclose

—

Affected

3state residents only

Confidence

66%

Full breach record for Jewish Community Center of Greater Rochester →

Jewish Community Center of Greater Rochester notified the Maryland AG that its accounting vendor, MMB, inadvertently sent a document containing employees' Social Security Numbers to other clients. The vendor confirmed recipients deleted the file. No network compromise occurred. Approximately 3 Maryland residents are affected. The JCC engaged external cybersecurity professionals and is taking steps to safeguard residents against identity fraud.

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Incident timeline

Feb 7, 2025

Discovered

Apr 23, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Jewish Community Center of Greater Rochester
norm: jewish community center of greater rochester
Industry: Otherllm

Discovered: Feb 7, 2025
Materiality determined: —
Notification sent: Mar 7, 2025
Affected individuals: 3state-resident count only
Data types: Government ID
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1119 Automated Collection
Threat actor: Partner

During the incident: Commenced a prompt and thorough investigation
Working very closely with external cybersecurity professionals
Inform you (and the affected residents) of the incident
Changes made: Steps that it is taking to help safeguard the affected residents against identity fraud
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.

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://oag.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376966.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 23, 2026
Raw hash: 5462331de7fab905fad432534337338bdc388dddec5475c505de1bf79a82b4d5

Reporting entityMCDONALD HOPKINS LLC

Victim entityJewish Community Center of Greater Rochester

Incidentdiscovered Feb 7, 2025

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov