Security incident · 2024-01-25
Nebula Revelation
According to the public DefiLlama incident dataset, Nebula Revelation (Optimism) suffered a security incident on 2024-01-25, with about $180K reported lost.
| Date | 2024-01-25 |
|---|---|
| Reported loss | $180K |
| Chain | Optimism |
| Target type | DeFi Protocol |
| Technique class | Reentrancy |
| Technique | Reentrancy |
| Bridge incident | No |
| Within 2024 | #141 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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