What was exposed, when it happened, and which databases confirm it.
- accounts
- 6,240,808
- Breached
- October 12, 2021
- Last Update
- October 22, 2021
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
During October 2021, 3.1 million email addresses with accounts on the cryptocurrency market capitalisation website CoinMarketCap were discovered being traded on hacking forums. Whilst the email addresses were found to correlate with CoinMarketCap accounts, it's unclear precisely how they were obtained. CoinMarketCap has provided the following statement on the data: "CoinMarketCap has become aware that batches of data have shown up online purporting to be a list of user accounts. While the data lists we have seen are only email addresses (no passwords), we have found a correlation with our subscriber base. We have not found any evidence of a data leak from our own servers — we are actively investigating this issue and will update our subscribers as soon as we have any new information."
Compromised Info
- Email addresses
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- LeakCheck— linked via automatic string matching
- Dehashed— linked via domain matching
- HIBP
FAQ
What was leaked in the CoinMarketCap breach?
The CoinMarketCap breach exposed: Email addresses.
When did the CoinMarketCap breach happen?
The CoinMarketCap breach was disclosed on October 12, 2021 and affected 6,240,808 records.
Am I affected by the CoinMarketCap breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the CoinMarketCap leak.