Leaderboard
900All-time rank
EA
Ethereum Alarm Clock
Oct 20, 2022
$260K
Lost
$260K
Recovered
$0
Net loss
$260K
Unrecovered0% recovered
On October 20, 2022, Ethereum Alarm Clock's transaction scheduling protocol was exploited via a gas fee refund calculation vulnerability where the cancel() function calculated refunds too high when given inflated transaction fees, allowing attackers to call cancel with high gas prices and extract approximately 204 ETH (~$260K) in overpaid refunds.
- Target
- DeFi
- Classification
- Protocol Logic
- Technique
- Reward Logic Flaw
- Attribution
- Unknown
- Chains
Ethereum
Event timeline
- Oct 20, 2022Exploit executed — $260K drained via reward logic flaw
- Attributed to Unknown
- Recovery status Unrecovered 0%