Security incident · 2023-07-11
Libertify
According to the public DefiLlama incident dataset, Libertify (Ethereum, Polygon) suffered a security incident on 2023-07-11, with about $230 reported lost.
| Date | 2023-07-11 |
|---|---|
| Reported loss | $230 |
| Chain | Ethereum, Polygon |
| Target type | DeFi Protocol |
| Technique class | Reentrancy |
| Technique | Reentrancy |
| Bridge incident | No |
| Within 2023 | #197 by loss that year, 0.0% 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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