HackingOtherTargetedIdentity (basic)LowContained

Detroit Symphony Orchestra

bd_919f3f213ee92ff0 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 27, 2023

Filed

Apr 1, 2024

To disclose

27 weeks

Affected

2state residents only

Linked

8 records

Confidence

64%

Full breach record for Detroit Symphony Orchestra →

Detroit Symphony Orchestra notified Montana residents of a data security incident. Unauthorized access occurred between Sept 19-27, 2023. The DSO discovered unusual activity on Sept 27, 2023. Personal information (names) was accessed. The DSO engaged cybersecurity experts, implemented security features, and offered 12 months of credit monitoring.

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Leak gap clock⏱ Leak >90d27 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 8 days

discovery → filing · 27 weeks / 187 days

Sep 19, 2023

Begins

Sep 27, 2023

Discovered

Apr 1, 2024

Filed

vs. sector median

+21 wks slower

This filing is one of 8 records about the same incident.View merged incident

A leak claim by snatch about this victim was first seen 151 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Sitesnatchbd_ca38a94d8a0d7c0c2023-11-01 · +152dVerified by operator
Leak Sitedispossessorbd_a8f30121c1ab9f032023-09-24 · +190dVerified by operator

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_34fc68c84112c0752024-04-01Verified
Vermont State AGbd_9d8c8188ac7132152024-04-01Verified
New Hampshire State AGbd_adf7430409ccfd8b2024-04-01Verified
Indiana State AGbd_b634aa9051f7fd402024-04-01Verified

Show 1 more filing ↓

Maine State AGbd_f7448b52c6a737612024-04-01Verified by operator

Name: Detroit Symphony Orchestra
norm: detroit symphony orchestra
Domain: dso.org

Name: Detroit Symphony Orchestra
norm: detroit symphony orchestra
Domain: dso.org
Industry: Otherllm

Discovered: Sep 27, 2023
Breach occurred: Sep 19, 2023 – Sep 27, 2023
Undetected for: 8 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 1, 2024
Affected individuals: 2state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Engaged leading cybersecurity experts to assist with an investigation
Implemented additional security features to reduce the risk of a similar incident occurring in the future
Offering complimentary credit monitoring and identity theft protection services by Cyberscout through Identity Force
Changes made: Implemented additional security features to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(187 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Massachusetts State AGApr 1 · first

Vermont State AGApr 1 · first

New Hampshire State AGApr 1 · first

Indiana State AGApr 1 · first

Maine State AGApr 1 · first

Montana State AGApr 1 · 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-1256.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 1, 2024
Raw hash: 148cd72cc41f1e200b087e1475e4d6acd2adfdc73aa22c0b54e5b01e9ce85b6c

Linked disclosures

Ransomware claims (2)

Regulatory filings (5) · sorted by filing gap

Reporting entityDetroit Symphony Orchestra

Victim entityDetroit Symphony Orchestra

Incidentdiscovered Sep 27, 2023

Stated responseEngaged leading cybersecurity experts to assist with an investigation

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov