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Friday, May 31, 2024 at 08:00 UTC

DMM Bitcoin

4,500 BTC moved out of Japanese exchange.

Lost
Funds stolen
$305.00M
Recovered
$0.00M0%
Still outstanding
$305.00M
Chain
Bitcoin
Category
CEX
Attack vector
Private Key Compromise
Reported by
SlowMist
Incident ID
h2024-2

Exploit & recovery timeline

  1. May 31, 2024 · 06:00 UTC
    Attack preparation

    Attacker wallets funded and staged ahead of the private key compromise exploit against DMM Bitcoin.

  2. May 31, 2024 · 08:00 UTC
    Exploit executed

    $305.0M drained from DMM Bitcoin on Bitcoin via Private Key Compromise.

  3. May 31, 2024 · 09:00 UTC
    Detected by SlowMist

    SlowMist flagged the anomalous transactions and published an initial alert.

  4. May 31, 2024 · 12:00 UTC
    Protocol response

    DMM Bitcoin paused affected contracts or withdrawals and began tracing outbound flows.

  5. Jun 1, 2024 · 08:00 UTC
    Funds traced

    Stolen assets followed through mixers, bridges, and exchange deposit addresses.

  6. Jun 30, 2024 · 08:00 UTC
    Funds written off

    No assets recovered; losses absorbed by the protocol, insurers, or users.