Overview
World’s largest online chess platform with millions of registered players globally, including a large Turkish user base.
Recent Developments
- 2026-09-13: Have I Been Pwned indexed 4,653,212 unique emails from 7.3M record dataset (2026-09-14-chess-com-leak-ransomnews-primary)
- 2026-08: 15.5 GB archive (7,337,395 records) distributed free on leak forums; captured July 26 – August 3, 2026
- Technical analysis indicates web-scraping / user-enumeration via find-friends feature — not server breach
- Exposed: emails, usernames, real names, countries, ratings, internal Google Ad Manager audience tags
- No passwords or payment data confirmed
Chess.com has not publicly confirmed breach vs. scraping. Present Ransomnews analysis as "evidence points to scraping."