Monitoring

DMM Bitcoin

CRITICALBitcoin·Phishing·#12 all-time
$305.0M stolenFriday, May 31, 2024 · 877 days ago

Corpus updated 2026-10-25

What happened

  • DMM Bitcoin, a centralised exchange, lost $305.0M on May 31, 2024.

  • The largest of the 217 incidents recorded in 2024: 18% of the $1.67B lost to hacks that year.

  • 2 other incidents were recorded the same day, the largest TLN Protocol ($280K).

  • Phishing is behind 29 recorded incidents totalling $1.03B; this is the 2nd largest of them.

  • $305.0M is recorded as returned — 100% of the amount taken.

Cite this record

Monitoring Room, "DMM Bitcoin hack — $305.0M stolen", incident record, data: DefiLlama hacks dataset, as of 2026-10-25 08:00 UTC. https://monitoringroom.com/situation/crypto-hack/dmm-bitcoin

Nearby in the record

MixedSwapRouter
5/31/2024$16K
Velocore V2
6/2/2024$6.8M
TLN Protocol
5/31/2024$280K
Lykke
6/4/2024$22.4M
MetaDragon
5/29/2024$181K
SteamSwap
6/7/2024$105K
← All incidents

Source: DefiLlama · 1317 recorded incidents · data as of 2026-10-25 08:00 UTC