Why are my messages always leaked?

Maybe someone made a mistake, or maybe someone else accidentally made a mistake. The specific solutions are as follows:

1. On the mobile phone desktop, open the SMS application. As shown in the figure:

2. In the short message, click the option in the upper right corner of "...". As shown in the figure:

3. Then, click to open the "Settings" function. As shown in the figure:

4. In the setting interface, click the "harassment interception" option. As shown in the figure:

5. Find the "SMS Interception" option and click it. As shown in the figure:

6. Click the "keyword blacklist" option, as shown:

7. After entering, click the "Add" option at the bottom. As shown in the figure:

8. Enter the keyword "verification code" and click "Save". As shown in the figure: