Why did the mobile phone suddenly receive a lot of short messages of Netease pass verification code?

The short message of verification code can be freely requested and received, which is usually needed when registering.

Someone may want to register an account, but they mistyped your mobile phone number. And click to get the verification code many times, and your mobile phone doesn't respond, so there will be multiple verification codes.

However, if you don't give up texting for a long time, someone may use the verification code vulnerability to maliciously harass. But it does not rule out server errors, pseudo base station fraud and so on.