币界网报道：[SIM card swap attacks are rampant, causing nearly $50 million in crypto asset losses] According to FBI statistics, there will be more than 1,000 SIM card swap attacks in 2023, causing nearly $50 million in losses. Scammers impersonate phone owners to trick operators into changing cards, intercept SMS verification codes and steal crypto wallet funds. Typical cases include Brandon Buchanan, co-founder of Iterative Capital, being defrauded of $450,000 worth of Bitcoin. Experts recommend using APP authenticators instead of SMS secondary verification. High-risk users should set up a secondary verification mobile phone number and register for each service with different email addresses. 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.