CoinMarketCap data breach

From Breaches, in the HARD wiki · Updated
This article is about the October 2021 breach of CoinMarketCap. For every breach, see Breaches.

The CoinMarketCap data breach exposed 3,117,548 accounts from coinmarketcap.com in October 2021. The data taken includes email addresses.[1]

Have I Been Pwned verified it and added it to its search on 22 Oct 2021, within a month. It is the 262nd largest of the 618 breaches in HARD’s list.

What was exposed

CoinMarketCap’s breach included one kind of data. What each lets criminals do:

DataWhat it’s used for
Email addressesExpect scam emails that name the company to look genuine.

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, CoinMarketCap among them, without showing the data.
  2. Distrust messages that mention CoinMarketCap.Scammers use breach data to sound genuine. Don’t click links in emails or texts about the breach; go to the site yourself.
  3. Expect the data to resurface.Breach data is sold and combined with other leaks for years. Stay wary of messages that know a little too much about you.

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.

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. “CoinMarketCap”, Have I Been Pwned, added 22 Oct 2021. Breach data licensed CC BY 4.0.