I have been receiving the credit card SMS verification code from the bank. What happened?

1. The holder before this mobile phone number used this number to bind a credit card;

2. Personal information was leaked and criminals tried to steal it.

If someone steals your card and submits a transaction, they will be asked to enter the verification code on your mobile phone. If he is right, he will fill in the number on your mobile phone and the transaction will be successful. But the number of mistakes is limited, so don't worry too much about safety. If you are afraid of such risks, you can go to the bank to turn off the fast payment function.

: How to protect personal information security

1. Develop a good habit of surfing the Internet and surf the Internet green. Don't visit websites you don't know or understand, and don't download content. It is very likely that there is a Trojan virus built in it to steal your personal information and get enough information about your anti-virus software, but it is inevitable to slip through the net. So it's best to go to your familiar, recognized and officially certified website.

2. Strictly guard against phishing software. Be careful when you download software on the website. Some software looks like decent software, which is similar to the page of the software you are familiar with in all aspects, but it actually captures the user's personal information. For example, if you need to enter your personal information, including phone number, ID number, and even bank card number and credit card number, you should be careful.

3. Don't disclose personal information at will. Some people go online and give away their personal information if they are not careful. For example, a webpage pops up saying that you have won the prize, you need to fill in the bank card number to receive the prize, and you need to pay the postage to receive it. Some people fill it out without thinking, and they are deceived only after revealing personal information. Therefore, when surfing the Internet, you must first find out whether the information you need to fill in involves your own information security, so you need to be cautious.

4. Local encryption. If important information is to be stored in the computer, it is best to encrypt the disk or file. Cases of computer leaks abound, such as hacking, computer poisoning, maintaining security, computer loss and so on. The security of personal information cannot be guaranteed. Although there is no absolute security, please encrypt it well in order to be safer.

5. Install personal firewall and update and install system patches in time. Install a firewall to improve the security level of personal computers, timely detect unknown situations to remind users, and update patches to fix system vulnerabilities. If not, criminals can take advantage of this to steal information.

6. Check and kill viruses regularly, update virus database in time, and protect computer information security. Antivirus is very important. Nowadays, the popular Trojan virus steals users' information. Updating the virus database can arm your virus database in time and scan the most comprehensive virus harm.

7. Store information in a safe place. Don't put security-related information on the internet or in the mailbox, which may lead to information leakage. Usually put on the computer hard disk. However, to do a good job of encryption, it is best to save it in a portable U disk and a mobile hard disk, and then take it out when necessary.

8. Do a good job of data backup. Data backup is very important, involving important security information. You can back up multiple files so that some of them are lost, or you can divide a file into several small files and store them in different places, so that even if some of them are stolen, there will be no loss.