Incident Overview
The decentralized asset management protocol Swan Treasury on BNB Chain was exploited due to the leakage of an off-chain signer's private key (the _signer key hardcoded in the ZhaiquanBuy contract). The attacker forged valid signatures and used PancakeSwap flash loans to purchase approximately 687,000 STY tokens at around a 100x discount (spending approximately 19,700 USDT). The attacker then forged the related claim()/transfer signatures and dumped the tokens into the STY/USDT pool, making a profit of approximately $625,000.
Sources & References
This record presents information attributed to the linked sources. Incident dates describe the original event, not a new report. Reported loss figures reflect the source record and are not current market valuations.