Category Archives: Tin tức

A trader on Ethereum notices an opportunity: a decentralized exchange pair is mispriced, and executing a swap now could generate profit. The transaction is submitted, but within seconds of hitting the mempool, a sophisticated bot detects it, inserts its own transaction ahead of the target, and captures the spread. This is a sandwich attack—a specific […]

A DeFi power user executing a complex strategy on Ethereum or a Layer 2 network often needs to sign multiple transactions in sequence: approve a token, swap it, deposit into a protocol, and claim rewards. Doing this manually, one signature at a time, creates friction and extends the time the wallet is exposed to an […]