Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Chess.com

3 breaches5.9M affected in allTechchess.com

Company profile
Scraping breachScraping exposed emails, location data and names.4.7M accountsTechUnverifiedSep 13Hackers 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, 2025Scraping breachScraping exposed emails, location data and names.1.3M accountsTechUnverifiedNov 10, 2023
About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages, the company profile.

records2026-09-25
Chess.com, 2025-09-034541
occurred2026-09-25
Chess.com, 2025-09-032025-06-05
source_type2026-09-25
Chess.com, 2025-09-03official
source_url2026-09-25
Chess.com, 2025-09-03https://ago.vermont.gov/document/2025-09-03-chesscom-data-breach-notice-consumers
status2026-09-25
Chess.com, 2025-09-03confirmed
verified_by2026-09-25
Chess.com, 2025-09-03vt-ag
verified2026-09-25
Chess.com, 2025-09-031
disclosed2026-09-25
Chess.com, 2025-09-032025-09-03
Added2026-09-25
Chess.com, 2025-09-03
Added2026-09-25
Chess.com, 2026-09-13
Added2026-09-25
Chess.com, 2023-11-10
Added2026-09-25
Chess.com