I don't know people who send text messages saying that they have changed their numbers. How can I avoid this kind of fraud?

Someone I didn't know sent a text message saying that he had changed his number. Now the public security bureau has stepped up its crackdown, and such cases are expected to be greatly reduced. The current regulations are very specific:

The Opinions of the Ministry of Public Security of the People's Republic of China and the Ministry of Public Security of the People's Republic of China on Several Issues Concerning the Application of Laws in Handling Telecommunication Fraud Cases stipulates that the amount of fraud is difficult to verify, but in any of the following circumstances, it shall be deemed as "other serious circumstances" as stipulated in Article 266 of the Criminal Law and convicted and punished for fraud (attempted):

1。 Send more than 5000 scam messages or make more than 500 scam calls;

2。 Fraudulent information was posted on the Internet with more than 5000 views.

With the above circumstances, the number reaches more than ten times the corresponding standard, which shall be deemed as "other particularly serious circumstances" as stipulated in Article 266 of the Criminal Law, and shall be convicted and punished for fraud (attempted).