Monitoring

Compound V2

CRITICALEthereum·Arithmetic Error·#28 all-time
$147.0M stolenWednesday, September 29, 2021 · 1852 days ago

Corpus updated 2026-10-25

What happened

  • Compound V2, a defi protocol, lost $147.0M on September 29, 2021.

  • The 3rd largest of the 127 incidents recorded in 2021: 5.1% of the $2.87B lost to hacks that year.

  • Arithmetic Error is behind 35 recorded incidents totalling $561.0M; this is the 2nd largest of them.

Cite this record

Monitoring Room, "Compound V2 hack — $147.0M stolen", incident record, data: DefiLlama hacks dataset, as of 2026-10-25 08:00 UTC. https://monitoringroom.com/situation/crypto-hack/compound-v2

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10/4/2021$13.0M
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← All incidents

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