Detecting Sybil Addresses in Blockchain Airdrops: a Subgraph-Based Feature Propagation and Fusion Approach

Sybil attacks pose a significant security threat to blockchain ecosystems, particularly in token airdrop events. This paper proposes a novel sybil address identification method based on subgraph feature extraction lightGBM. The method first constructs a two-layer deep transaction subgraph for eac...

DoS while calling pay() for the first time when the JBXBuybackDelegate.sol would not have any project's token

Lines of code Vulnerability details Impact 1. Let us assume a user calls the pay function in the JBPayoutRedemptionPaymentTerminal31.sol or the JBETHPaymentTerminal31.sol for the first time. By "for the first time", I mean that the JBXBuybackDelegate.sol does not have any of the project's tokens ...