Security incident · 2022-10-20
Ethereum Alarm Clock
According to the public DefiLlama incident dataset, Ethereum Alarm Clock (Ethereum) suffered a security incident on 2022-10-20, with about $260K reported lost.
| Date | 2022-10-20 |
|---|---|
| Reported loss | $260K |
| Chain | Ethereum |
| Target type | DeFi Protocol |
| Technique class | Protocol Logic |
| Technique | Reward Logic Flaw |
| Bridge incident | No |
| Within 2022 | #128 by loss that year, 0.0% of all reported losses that year |
How this kind of attack works
The protocol's own rules had a flaw, for example in how rewards, liquidations or swaps were calculated, and the attacker followed those rules to drain funds.
Would a pre-payment check have helped
Protocol logic flaws call for audits and formal verification.
Other incidents with the same technique
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- MonoX2021-11-30 · $31.4M
- Popsicle Finance2021-08-03 · $20.7M
- BearnFi2021-05-17 · $18.0M
- Abracadabra Spell2025-03-25 · $13.0M
- Saddle Finance2022-04-30 · $11.0M