Is it safe to send text messages when WeChat logs in abnormally as long as the number is safe?

No, it's not safe. The micro-signal is registered by someone else on another mobile phone or computer. When the WeChat background system detects that the mobile phone number or device does not match the original bound mobile phone number and realizes the unsafe behavior, it will send a short message to the secure mobile phone bound by WeChat, asking the user to confirm the identity. In this case, it is necessary to log in to the WeChat bound by the mobile phone in time, and you can modify the login password and improve the password level to effectively avoid it. You can also give feedback to WeChat background customer service.