I received many short messages about the verification code of Cool City Technology. What happened?

Because your mobile phone number was leaked, it was used by criminals, bombarded by short messages, and spam messages such as verification code were sent to your mobile phone number in a short time.

1. Generally speaking, the verification number is only valid if it is sent to the corresponding mobile phone for login. If you receive a lot of verification numbers inexplicably, your mobile phone number may be leaked for some reason;

2. Or for some reason, your mobile phone number is bombarded by criminals using short messages, and constantly sends spam such as verification code to your mobile phone number; You can try to use third-party mobile phone housekeeper and other software to set up harassment interception to minimize harassing text messages;

3. It may be that someone logged into a website that needs a verification code, but accidentally left the wrong number or the binding software entered the wrong number and bound it to your mobile phone, so the mobile phone will receive a short message.

Matters needing attention in daily use of mobile phones:

1, usually do a good job in protecting sensitive private information such as mobile phone number, ID number, bank card number and payment platform account number;

2. Turn off the phone or set the flight mode before going to bed, or turn off the mobile signal of the phone and only connect to WIFI, which can slightly increase the difficulty of being sniffed.

3. If you get up in the morning and see a strange verification code short message in the middle of the night, you will definitely think that you may have encountered a short message sniffing attack, and check your bank card and payment application quickly. At this time, if you find that the money has been stolen, freeze the bank card quickly, keep the content of the short message and call the police.

4. If you suddenly find that the cell phone signal has changed to 2G, you should immediately realize that you may be experiencing such an attack and take the above measures to protect yourself.