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Scraped records of over 7.3M Chess.com users posted online

A forum user released a 15.5 GB data file containing millions of user records, according to Hacker News.

The short version

  • A 15.5 GB database file containing over 7.3 million Chess.com user records was posted for free on two data-leak forums.[Hacker News]
  • Analysis indicates the collection consists of real data gathered via automated scraping rather than a direct database breach.[Hacker News]
  • The exposed file contains no passwords, password hashes, or financial payment details, though it includes marketing and profile fields.[Hacker News]

Key facts

  • A 15.5 GB archive containing 7,337,395 records was posted without financial demands on two separate data-leak forums.[Hacker News]
  • The archive includes no passwords, password hashes, or financial payment details.[Hacker News]
  • Data collection occurred in daily batches across nine straight days, and roughly 7.4% of the entries are duplicates.[Hacker News]
  • Researchers confirmed the dataset's authenticity by matching embedded UUID timestamps against registration dates across 200,000 accounts.[Hacker News]
  • Advertising-audience segment fields are included in every row, suggesting access to an internal or authenticated endpoint.[Hacker News]

What remains uncertain

  • The exact internal endpoint or mechanism used to retrieve the internal ad-segment data remains unconfirmed.[Hacker News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.