HackingRetail & ConsumerRetailData ExfiltratedTargetedIdentity (basic)Government IDMediumContained

SOTHEBY'S

bd_4bd73b04199aa29b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 24, 2025

Filed

Oct 15, 2025

To disclose

12 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

68%

Full breach record for SOTHEBY'S →

Sotheby’s notified consumers on October 15, 2025, of a data breach discovered on July 24, 2025, where an unknown actor removed data from its environment. The incident involved personal information including names and government identifiers. Sotheby’s notified federal law enforcement and regulatory authorities, and is offering 12 months of credit monitoring via TransUnion. The investigation was completed by September 24, 2025.

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Vermont clock✗ VT AG >45 bday12 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

discovery → filing · 12 weeks / 83 days

Jul 24, 2025

Discovered

Oct 15, 2025

Filed

vs. sector median

+2 wks slower

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

Massachusetts State AGbd_45f84b00cb19d0752025-10-15Verified
Maine State AGbd_84da0953b8865c3d2025-10-15Candidate
New Hampshire State AGbd_9d993dd442d3ccba2025-10-15Verified

Name: SOTHEBY'S
norm: sotheby s
Domain: sothebys.com

Name: SOTHEBY'S
norm: sotheby s
Domain: sothebys.com
Industry: Retail & Consumerllm

Discovered: Jul 24, 2025
Materiality determined: —
Notification sent: Oct 15, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified and worked with federal law enforcementNotifying relevant regulatory authorities

During the incident: Notified federal law enforcement
Notified relevant regulatory authorities
Offering 12 months of complimentary credit monitoring and identity protection services through TransUnion
Changes made: Taking steps to assess the security of relevant systems
Identifying and validating the data involved
Continuing to review safeguards and consider further enhancements
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(83 days from discovery to filing)
Compliance flags: VT AG >45 bday
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 · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGOct 15 · first

Maine State AGOct 15 · first

New Hampshire State AGOct 15 · first

Vermont State AGOct 15 · 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://ago.vermont.gov/document/2025-10-15-sothebys-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 15, 2025
Raw hash: 0e995e947b4ea1eb411c95df568e7123964ed391cb9b49de105df36de736ac69

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entitySOTHEBY'S

Victim entitySOTHEBY'S

Incidentdiscovered Jul 24, 2025

Stated responseNotified federal law enforcement

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov