OKX CEO Star said on social media that 1. OKX currently does not have any user loss cases completed by switching from GA to SMS. 2. The authentication-free address is designed for the automatic withdrawal needs of API users. Setting the limit is not in line with the actual needs, and the security verification and withdrawal of adding the authentication-free address are at the same level. Here, you can consider introducing a silent authentication-free address automatic expiration mechanism. 3. GA and SMS have their own advantages and disadvantages in terms of security. The GA security level is indeed slightly higher than that of SMS, but it is not absolutely safe. 4. There are two ways for hackers to steal a user's GA: (a) implanting a Trojan horse on the user's device; (b) if the user turns on GA cloud synchronization, stealing the user's Google account can also obtain the user's GA. 5. Methods for stealing user SMS include device Trojan implantation, SIM card copying, pseudo-base stations, and theft through SMS service providers. 6. OKX has full confidence in the safety of our products, and we will continue to compensate in full for the damage caused by OKX itself.