OKX Web3 Wallet has specially planned the "Security Special Issue" column to provide special answers to different types of on-chain security issues. Through the most real cases happening around users, in collaboration with experts or institutions in the security field, dual sharing and answers are conducted from different perspectives, so as to sort out and summarize the rules of safe transactions from the shallow to the deep, aiming to strengthen user security education while helping users learn to protect their private keys and wallet asset security from themselves.