Security incident · 2021-08-13
Acala Network
According to the public DefiLlama incident dataset, Acala Network (Acala) suffered a security incident on 2021-08-13, with about $1.6M reported lost.
| Date | 2021-08-13 |
|---|---|
| Reported loss | $1.6M |
| Chain | Acala |
| Target type | DeFi Protocol |
| Technique class | Token & Share Accounting |
| Technique | Infinite Mint |
| Bridge incident | No |
| Within 2021 | #79 by loss that year, 0.1% of all reported losses that year |
How this kind of attack works
The contract's bookkeeping was wrong, for example the conversion between shares and assets, so the attacker redeemed far more than they put in.
Would a pre-payment check have helped
Accounting and share-math bugs are contract-layer problems for code audits.
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