Chess.com discloses recent data breach via file transfer app

Chess.com discloses recent data breach via file transfer app

Chess.com has disclosed a data breach after threat actors gained unauthorized access to a third-party file transfer application used by the platform.

Chess.com Data Breach Exposes Information Of 4,541 Users

Chess.com, one of the world’s largest online platforms for playing chess, has disclosed a data breach affecting 4,541 people, including residents of Maine and Vermont. The company confirmed that an external hacking incident involving a third-party file transfer tool led to the exposure of limited personal information. According to filings with state regulators, the Chess.com data breach occurred on June 5 and June 18, 2025, but was not discovere…

Chess.com Data Breach - Hackers Breached External Systems And Gained Internal Access - Cybernoz - Cybersecurity News

Online chess giant Chess.com has disclosed a data breach that compromised the personal information of 4,541 individuals, according to a filing with the Maine Attorney General’s Office. The cyber incident took place on June 5, 2025 and was discovered nearly two weeks later on June 19, 2025. Chess.com confirmed that the breach was the result of an external hack, where attackers gained unauthorized access to sensitive data. The company reported tha…

Chess.com says 4,500 people had data stolen during June breach

In breach notifications submitted to regulators in Maine and Vermont, Chess.com explained that 4,541 people had personal information exposed to hackers who breached an unnamed file transfer application between June 5 and June 18.