Security incident · 2020-11-12
Akropolis
According to the public DefiLlama incident dataset, Akropolis (Ethereum) suffered a security incident on 2020-11-12, with about $2.0M reported lost.
| Date | 2020-11-12 |
|---|---|
| Reported loss | $2.0M |
| Chain | Ethereum |
| Target type | DeFi Protocol |
| Technique class | Reentrancy |
| Technique | Reentrancy |
| Bridge incident | No |
| Within 2020 | #22 by loss that year, 0.1% of all reported losses that year |
How this kind of attack works
The contract sent funds before updating balances, and the attacker re-entered during the transfer to withdraw repeatedly.
Would a pre-payment check have helped
Reentrancy is a classic contract bug, unrelated to the counterparty; code audits address it.
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- The DAO2016-06-17 · $60.0M
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