K-Chess, an online chess platform operated by Keysquare (associated with Kasparov Chess), has allegedly been compromised by a threat actor. The threat actor claims to have scraped the platform’s database in 2024. The leaked dataset reportedly contains approximately 83,000 rows of user information.
According to the actor, the database is being shared publicly for the first time. The platform, known for allowing users to play, learn, and watch chess content, utilizes infrastructure linked to keysquare.io, as evidenced by the avatar URLs found in the sample data.
According to the actor, the allegedly compromised data includes detailed user profiles and game statistics. The sample data provided in the leak features the following fields:
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User Identity: Full names, usernames, and email addresses.
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Social IDs: Linked Google, Facebook, and Apple account IDs.
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Personal Information: Birthdates, country of residence, and timezones.
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Account Details: User tier (e.g., “free”), skill level, and avatar URLs.
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Chess Statistics: Extensive rating data for various modes (Bullet, Blitz, Rapid, Classic, Daily, Chess960, Puzzles) including Glicko ratings and deviations.
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Platform Activity: Account creation and update timestamps, friend visibility settings, and subscription status.
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