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Chess.com (2023) data breach

From Breaches, in the HARD wiki · Updated
This article is about the November 2023 breach of Chess.com (2023). For every breach, see Breaches.

The Chess.com (2023) data breach exposed 1,274,077 accounts from chess.com in November 2023. The data taken includes usernames, names, email addresses and geographic locations.[1]

Have I Been Pwned verified it and added it to its search on 10 Nov 2023, within a month. It is the 382nd largest of the 618 breaches in HARD’s list.

What was exposed

Chess.com (2023)’s breach included 4 kinds of data. What each lets criminals do:

DataWhat it’s used for
UsernamesHalf of a login. With a reused password, it opens other accounts.
NamesMakes scam messages personal enough to believe.
Email addressesExpect scam emails that name the company to look genuine.
Geographic locationsRoughly where you live.

What to do

  1. Check whether you’re in it.Search your email address on Have I Been Pwned. It tells you which breaches it appears in, Chess.com (2023) among them, without showing the data.
  2. Turn on two-step sign-in.On Chess.com (2023) (chess.com) and your email, so leaked sign-in details aren’t enough on their own.
  3. Distrust messages that mention Chess.com (2023).Scammers use breach data to sound genuine. Don’t click links in emails or texts about the breach; go to the site yourself.

Timeline

  • : the breach, as best it can be dated.
  • : Have I Been Pwned verifies the data and adds it to its search, within a month.
  • : the entry was last updated.

Similar breaches

Breaches that leaked the same kinds of data, closest in time:

See Breaches for all 618, and Updates for keeping your devices patched.

References

  1. ^ Troy Hunt. “Chess.com (2023)”, Have I Been Pwned, added 10 Nov 2023. Breach data licensed CC BY 4.0.