Data breach · October 2021

Was I in the CoinMarketCap breach?

Data listed as coming from CoinMarketCap, a cryptocurrency market data website, dates from October 2021 and holds 3,117,548 accounts. It included email addresses. If you had an account there by October 2021, check your address below to see whether it is one of them.

Breach record last updated . Steps read from the government pages at the foot of this page.

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01

What happened?

In October 2021 lists of email addresses matching accounts on the site were found for trade on hacking forums. How they were obtained is not clear. The company said the lists held only email addresses and no passwords, that they matched its subscribers, and that it had found no sign of a leak from its own servers.

The record notes that the company disputed this, or that where the data came from was not confirmed. It is listed here because the data is in monitored breach databases.

Organisation
CoinMarketCap, a cryptocurrency market data website (coinmarketcap.com)
When it happened
October 2021
Added to monitored breach databases
22 October 2021
Accounts in the data
3,117,548
What was exposed
email addresses

The breach record cites a public report on coinmarketcap.com.

02

What was exposed, and what does it mean for me?

  • Your email addressemail addresses

    Expect messages that look like they come from this service or another one you use, written to get you to click a link or sign in on a fake page.

03

What should I do now?

In this order, for what this breach exposed.

1. Expect phishing

  • Be wary of messages that urge you to act fast, ask for personal details, or link to an address that is slightly off.
  • If a message might be genuine, do not use its links or phone numbers. Go to the site by typing its address yourself.
04

Is my address in it?

Enter your email address. We check that one address against monitored breach databases and show which breaches list it and what each exposed.

No account needed. We keep the address you check, when, and how many breach records it was found in, to prevent abuse, until you ask us to delete it. Privacy

Sources

Where does this come from?

Other breaches from 2021

All breaches Breaches from 2021 Breaches that exposed email addresses and profile details only