Waqas Ahmed

Stories

Chess.com data leak exposes millions of accounts; evidence points to scraping

As of September 2026: Published analysis finding 4,656,791 unique email addresses and no passwords

A 15.5-gigabyte file holding records for 7.3 million Chess.com accounts surfaced on two data-leak forums this week, free of charge. It contains email addresses, usernames, real names, countries, chess ratings, and subscription tiers.

Updated Sep 14