Chess.com (2026)
SourceHave I Been Pwned
StatusConfirmed breach
AddedSeptember 13, 2026
OccurredAugust 3, 2026
Accounts affected4,653,212
Domainchess.com
What was exposed
Email addressesGeographic locationsNamesUsernames
What to do if you were affected
- Expect more phishing and spam at this address. Treat messages that reference this company with extra caution.
- Be wary of targeted scams that use your personal details to sound convincing.
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Protect your data Details
In August 2026, millions of records allegedly sourced from Chess.com were posted online . The data contained 7.3M rows with 4.6M unique email addresses, along with usernames, names, countries and data relating to users' Chess.com accounts. Analysis of the data suggested it had been obtained by scraping. When loaded into HIBP, 99% of the email addresses had already appeared in previous data breaches, further supporting the scraping theory. Read more about scrapes and data breaches.
Frequently asked questions
What is the Chess.com (2026) data breach?
In August 2026, millions of records allegedly sourced from Chess.com were posted online . The data contained 7.3M rows with 4.6M unique email addresses, along with usernames, names, countries and data relating to users' Chess.com accounts. Analysis of the...
When did the data breach happen?
This data breach occurred around August 2026.
How many accounts were affected?
Around 4,653,212 accounts were affected.
What information was exposed?
Exposed data included Email addresses, Geographic locations, Names and Usernames.
What should I do if I was affected?
Expect more phishing and spam at this address. Treat messages that reference this company with extra caution. Be wary of targeted scams that use your personal details to sound convincing.
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