1. Try not to enter your card number and personal information casually online. It is best to go directly to the bank to apply for a credit card. Don't do it outside to avoid revealing personal information and credit card information.

2. When handling a credit card, you can set a password, or you can swipe your card without setting a password. Be sure to set a password, which will be safer and more secure.

After getting the credit card, we can see that there are four numbers+three numbers on the back of the card. The first four are the last four of the card, and the last three are very important. It's a secure authentication code for online payment. It is generally recommended to stick it with tape, which can effectively prevent interested people from stealing and then copying your credit card.

If you do the above, your credit card will be safer, and it is better to change it into a chip card.