Security incident · 2018-10-07
SpankChain
According to the public DefiLlama incident dataset, SpankChain (Ethereum) suffered a security incident on 2018-10-07, with about $38K reported lost.
| Date | 2018-10-07 |
|---|---|
| Reported loss | $38K |
| Chain | Ethereum |
| Target type | DeFi Protocol |
| Technique class | Reentrancy |
| Technique | Reentrancy |
| Bridge incident | No |
| Within 2018 | #21 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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