Bitfinex Warns Customers to Halt Deposits After Suspected Hack

AccessTimeIconMay 22, 2015 at 1:08 p.m. UTC
Updated Aug 18, 2021 at 3:54 p.m. UTC

Presented By Icon

Election 2024 coverage presented by

Stand with crypto

UPDATE (22nd May, 17:2opm GMT): A representative from Bitfinex has indicated it has generated a new hot wallet on a "failsafe machine". It expects deposits and withdrawals will be live "soon", after the wallet has successfully synced.


  • Bitcoin Mining in the U.S. Will Become 'a Lot More Decentralized': Core Scientific CEO
    13:18
    Bitcoin Mining in the U.S. Will Become 'a Lot More Decentralized': Core Scientific CEO
  • Binance to Discontinue Its Nigerian Naira Services After Government Scrutiny
    05:10
    Binance to Discontinue Its Nigerian Naira Services After Government Scrutiny
  • The first video of the year 2024
    04:07
    The first video of the year 2024
  • The last regression video of the year 3.67.0
    40:07
    The last regression video of the year 3.67.0
  • Popular bitcoin exchange Bitfinex today urged customers to halt deposits while it investigates a suspected hack.

    In a statement released this morning, the Hong Kong-based company said the keys to its hot wallet "might have been compromised". However, the majority of customers' funds would not be affected, it said.

    "Although we keep over 99.5% of users' BTC deposits in secure multisig wallets, the small remaining amount in coins in our hot wallet are theoretically vulnerable to attack [...] Although this incident is unfortunate, its scale is small and will be fully absorbed by the company."

    This year saw both Coinapult and Bitstamp lose funds in hot wallet thefts, with an estimated total loss of $5.4m at the time of reporting.

    Currently the third most popular global bitcoin exchange, Bitfinex's 24-hour volume stands at 15,905.02 BTC ($3.7m), according to BitcoinCharts.

    A 0.5% loss on these trades works out at roughly $18,500. However, data from CryptoWatch and BitcoinWisdom suggests some variation in the exchange's global volume and its potential loss. Both list volume figures closer to 10,500 BTC.

    said it was working to create a new hot wallet for the deposits it stores online.

    The exchange, which recently partnered with AlphaPoint to overhaul its back-end, is expected to release further updates in the coming hours.

    Additional reporting by Pete Rizzo.

    CorrectionA previous version of this article stated that Bitfinex was the third most popular exchange by volume.

    CoinDesk is following this developing story.

    Disclosure

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

    CoinDesk is an award-winning media outlet that covers the cryptocurrency industry. Its journalists abide by a strict set of editorial policies. CoinDesk has adopted a set of principles aimed at ensuring the integrity, editorial independence and freedom from bias of its publications. CoinDesk is part of the Bullish group, which owns and invests in digital asset businesses and digital assets. CoinDesk employees, including journalists, may receive Bullish group equity-based compensation. Bullish was incubated by technology investor Block.one.


    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 consensus.coindesk.com to register and buy your pass now.