
- Chess.com discloses June 2025 cyberattack which exposed data of 4,541 users
- Hackers exploited a vulnerable third-party file transfer tool; core systems weren’t breached
- No logins or payment data were stolen; victims get free identity theft and credit monitoring
Chess.com, the biggest and most popular chess game online platform, has confirmed suffering a cyberattack in which it lost sensitive information on a small fragment of its user base.