CoinMarketCap data breach affects more than 3 million users

CoinMarketCap, a subsidiary company of the exchange house Binance, admitted the leak of 3.1 million email addresses belonging to its users. According to spokespersons for the website, there was no other type of compromised data.

The website Have I Been Pwaned was the one who revealed the leak in the first place. Although they published the information on October 22 of this year, they point out that the attack occurred ten days earlier.

The exact number of compromised email addresses is 3,117,548 and it was being offered for sale on hacker forums. According to CoinMarketCap, there were no passwords or other leaked data.

While the list of data we have reviewed comprises only email addresses (no passwords), we found a correlation with our subscriber database. We have not found any evidence of data breaches from our servers.


CoinMarketCap has not yet found out how this information was leaked from its database. However, according to comments provided by the Binance affiliate to the Cointelegraph website, the email addresses in question were most likely taken from another platform.

Since the passwords are not included in the data that we have seen, we believe that they have been obtained from other platforms where users could have reused passwords across different sites.


CoinMarketCap has not yet determined how their users’ data was leaked or, in any case, they have not disclosed information about it. Source: B_A /

CoinMarketCap is a website founded in 2013 that gradually became one of the most consulted sites worldwide to know the movements of the crypto-asset market. In April 2020, the exchange house Binance became a majority shareholder of CoinMarketCap. Fortunately, although both platforms maintain a close relationship, Similar leaks have not been revealed on the Binance database.

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Leakage of user data before the CoinMarketCap case

In 2020, the hasty provision of spaces for remote work due to the spread of the coronavirus globally left many vulnerabilities available to hackers. In fact, during the first semester of that year, it is estimated that data hijacking accounted for 41% of cyber insurance claims.

Ledger wallet users were also victims of data hijacking. On that occasion, it was about the email addresses, names, telephone numbers and residence addresses of more than 1 million users of this type of hardware to store cryptocurrencies.

It is important to note that, although there is no knowledge of password leakage in cases such as those exposed in this article, it doesn’t hurt to change the password old to websites whose databases could have been compromised in some way.



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