HackingStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIDENTITY_BASICLowContained
Chess.com, LLC
bd_fcd24aa03b555a7d · schema v1 · pii pii-v1
Full breach record for Chess.com, LLC →Chess.com notified Vermont consumers of a data breach involving unauthorized access to a third-party file transfer application between June 5 and 18, 2025. The incident affected fewer than 0.003% of users, exposing names and other personal information. No financial data was compromised. Chess.com contained the incident, notified law enforcement, and provided credit monitoring and identity theft recovery services to affected individuals.
Vermont clock✗ VT AG >45 bday11 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.
This filing is one of 4 about the same incident.View merged incident
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- bd_d4f40ff3bc1d6ae0Indiana State AGfiled 2025-09-03Verified
- bd_da3bc401913fa8baMaine State AGfiled 2025-09-03Candidate
- bd_51094529e07762bfNew Hampshire State AGfiled 2025-09-08(5d gap)Verified
Source provenance
- Source URL
- https://ago.vermont.gov/document/2025-09-03-chesscom-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Sep 3, 2025
- Raw hash
- a898adeaf9f6285d428affd45f3ee18435a2b98d58a6b7e0b1b166432a22c450
Reporting entity
- Name
- Chess.com, LLCnorm: chesscom
- Domain
- chess.com
Victim entity
- Name
- Chess.com, LLCnorm: chesscom
- Domain
- chess.com
Incident
- Discovered
- Jun 19, 2025
- Materiality determined
- Sep 3, 2025
- Notification sent
- Sep 3, 2025
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_BASIC
- Attack vector
- Third-Party / Supply Chain
- MITRE ATT&CK
- T1195 Supply Chain Compromise
- Threat actor
- External
- Regulator citations
- Notified federal law enforcement
- Third party
- via third-party file transfer application
- Initial access
- supply_chain
Compliance
- Time to disclose
- 11 weeks(76 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.
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.