Chess.com, LLC

Chess.com LLC notified the New Hampshire Attorney General of a security breach involving a third-party file transfer application. The incident was discovered on June 19, 2025, affecting one New Hampshire resident's name and driver's license/state ID. The incident has been contained, and the company offered 12 months of credit monitoring.

Chess.com LLC reported a data breach to the Indiana Attorney General. The breach occurred on 2025-06-05 and was reported on 2025-09-03. 10 Indiana residents were affected. 4,541 individuals affected in total.

On June 19, 2025, Chess.com discovered that an unauthorized actor had gained access to a third-party file transfer application used by the company on June 5 and 18, 2025, acquiring data for fewer than 0.003% of users. Chess.com's own systems and member accounts were not compromised. Personal information including names and certain other data elements was obtained. 4,541 individuals were affected total; 1 Maine resident. The incident was contained and law enforcement was notified.

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.