Chess.com (2026) scraped data of 4.6M unique email addresses added to Have I Been Pwned
In August 2026, a dataset of 7.3M rows allegedly sourced from Chess.com was posted online, containing 4.6M unique email addresses. The data also included usernames, names, countries and account-related data. Analysis suggests the data was obtained by scraping rather than a direct breach of Chess.com systems. Have I Been Pwned added it on …