4.65M Chess.com email addresses added to HIBP, 99% from earlier breaches
TechNadu · x · 2026-09-14
4,653,212 email addresses tied to Chess.com accounts have been indexed by Have I Been Pwned. However, about 99% had already appeared in previous breaches, supporting the theory that the dataset was scraped and aggregated from older leaks rather than stolen directly from Chess.com.
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