According to online reports, according to FBI statistics, there were more than a thousand SIM swap attacks in 2023, resulting in losses of nearly US$50 million. Scammers collect personal information, pretend to be the owner to trick operators into changing cards, and intercept text messages Captcha to steal encrypted wallet funds. Typical cases include Brandon Buchanan, co-founder of Iterative Capital, who was cheated of $450,000 worth of Bitcoin. Experts suggest using an APP validator instead of secondary verification of text messages. High-risk users should set up a special mobile phone number to verify secondary verification and use different email addresses to register for various services. Institutions can use multi-signature wallets and blockchain risk control tools (such as Crystal Intelligence) to monitor transactions in real time and intercept anomalies to reduce the risk of asset theft.