Leaderboard
31All-time rank
Compound V2
Sep 29, 2021
$147M
Lost
$147M
Recovered
$0
Net loss
$147M
Unrecovered0% recovered
Compound V2's Comptroller had a conditional logic bug when Proposal 62 activated on September 29-30, 2021. An off-by-one error (> instead of >=) in the COMP distribution calculation allowed users to claim far more tokens than intended.
- Target
- DeFi
- Classification
- Token & Share Accounting
- Technique
- Arithmetic Error
- Attribution
- Unknown
- Chains
Ethereum
Event timeline
- Sep 29, 2021Exploit executed — $147M drained via arithmetic error
- Attributed to Unknown
- Recovery status Unrecovered 0%