Leaderboard
677All-time rank
C
ChainSwap
Jul 2, 2021
$800K
Lost
$800K
Recovered
$0
Net loss
$800K
Unrecovered0% recovered
On July 2, 2021, ChainSwap, an Ethereum-BSC bridge protocol, was exploited via a bridge logic flaw where attackers bypassed signature verification by exploiting incorrect authQuotaOf implementation, allowing them to mint tokens across multiple protocols using the bridge and steal approximately $800K.
How the exploit worked
View reproducible PoCBridge, logic flaw.
Lost: $.8 million
Source: DeFiHackLabs (SunWeb3Sec)
- Target
- Bridge
- Classification
- Bridge & Cross-Chain
- Technique
- Bridge Logic Flaw
- Attribution
- Unknown
- Chains
EthereumBinance Smart Chain
Event timeline
- Jul 2, 2021Exploit executed — $800K drained via bridge logic flaw
- Attributed to Unknown
- Recovery status Unrecovered 0%
Data credits
- DefiLlamaIncident record, amounts, chains, recovery data and logo
- DeFiHackLabsExploit analysis and reproducible proof-of-concept (by SunWeb3Sec)