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.
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Incident timeline
Jun 5, 2025
Begins
Jun 19, 2025
Discovered
Sep 3, 2025
Filed
vs. sector median
on median
Linked disclosures
Why this link?Regulatory filings (5) · sorted by filing gap
- Massachusetts State AGbd_9bc9145d37fe9f6d2025-09-03Verified
- Indiana State AGbd_d4f40ff3bc1d6ae02025-09-03Verified
- Maine State AGbd_da3bc401913fa8ba2025-09-03Candidate
- Nebraska State AGbd_ea4cdfd21d1adf7f2025-09-03Verified
Show 1 more filing ↓Show fewer ↑up to 5d gap
- New Hampshire State AGbd_51094529e07762bf2025-09-08 · +5dVerified
Filing propagation · 6 filings · 6 states
View merged incident ↗Pattern: first filing Sep 3 (MA), last Sep 8 (NH) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.