Chess.com

Disclosed Nov 10, 20231,274,077 accountsUnverified

In November 2023, over 800k user records were scraped from the Chess.com website and posted to a popular hacking forum . The data included email address, name, username and the geographic location of the user. A further 446k scraped records were later provided and added to HIBP.

What is known

People affected	1,274,077 (accounts in the leaked data, per Have I Been Pwned)
Disclosed	Nov 10, 2023
Happened	Nov 8, 2023
Attack	Scraping
Data exposed	EmailsLocationNames
Sector	Tech
Status	Unverified: not yet confirmed by an official notice, a filing or the organization
Check your email	Have I Been Pwned

Sources

Aggregatorhaveibeenpwned.com

Have I Been Pwned: Chess.com (2023)

Notices filed

Accounts in the dataNov 10, 2023

Have I Been Pwned1,274,077 people

Other breaches at Chess.com

Scraping breachScraping exposed emails, location data and names.4.7M accountsTechUnverifiedSep 13 Hackers access Chess.com third-party file transfer app, 4,500 users hitVendor breach exposed names. Reported to the Indiana AG.Vendor breach4,541 affectedGamingUSSep 3, 2025

History of this record

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (Have I Been Pwned). Record counts are as reported. Not legal advice.

Everything about Chess.com