UK Crypto Exchange EXMO Says $4M of Hacked Funds Was Through Poloniex

EXMO has confirmed an estimated $4 million of cryptocurrency was stolen through the exchange Poloniex during a hack on Dec. 21.

AccessTimeIconDec 25, 2020 at 4:59 p.m. UTC
Updated Sep 14, 2021 at 10:48 a.m. UTC
10 Years of Decentralizing the Future
May 29-31, 2024 - Austin, TexasThe biggest and most established global event for everything crypto, blockchain and Web3.Register Now

Cryptocurrency exchange EXMO said an estimated $4 million of the cryptocurrency stolen during a hack on Dec. 21 was through the exchange Poloniex.  

  • The U.K.-based platform has estimated that a total of 6% of its cryptocurrency has been lost to the attack with an estimated $4 million being withdrawn through Poloniex. The dollar figure of what was lost overall in the hack wasn't immediately known.
  • The exchange said assets cannot be recovered by EXMO due to criminals withdrawing the funds through Poloniex. 
  • “$1 million in ZEC [zcash] stolen from EXMO have been withdrawn through the Poloniex crypto exchange,” an EXMO spokesperson told CoinDesk Friday.
  • On the day of the attack, EXMO said it had contacted cryptocurrency exchange Poloniex with a request to block an associated account and informed London police about the breach.
  • EXMO reported losses in six of the 57 cryptocurrencies it supports including ethereum classic. Each digital asset is hosted on its own server, the firm said.
  • The platform said it hopes to soon be able to fully reinstate withdrawals and deposit functions on its exchange, which has resumed most of its work.
  • “We are making some final preparations and checks at the moment before enabling depositing and withdrawing on EXMO. It will soon be ready,” said the EXMO spokesperson. 
  • EXMO stressed that those users affected by the incident will be covered by the exchange.
  • Poloniex did not immediately respond to a request for comment.


Please note that our privacy policy, terms of use, cookies, and do not sell my personal information has been updated.

CoinDesk is an award-winning media outlet that covers the cryptocurrency industry. Its journalists abide by a strict set of editorial policies. In November 2023, CoinDesk was acquired by the Bullish group, owner of Bullish, a regulated, digital assets exchange. The Bullish group is majority-owned by; both companies have interests in a variety of blockchain and digital asset businesses and significant holdings of digital assets, including bitcoin. CoinDesk operates as an independent subsidiary with an editorial committee to protect journalistic independence. CoinDesk employees, including journalists, may receive options in the Bullish group as part of their compensation.

Learn more about Consensus 2024, CoinDesk's longest-running and most influential event that brings together all sides of crypto, blockchain and Web3. Head to to register and buy your pass now.

Read more about