It is impossible to withdraw cash by credit card without the original ID card and the main card.
First of all, the credit card can be set as password plus signature, although no one compares signatures in life now, that is, as long as the password is known, whoever gets the credit card can spend it. But even ordinary debit cards can be withdrawn or consumed if others know the password. So in reality, it is very safe to use credit cards as passwords and signatures.
Secondly, many websites can pay online shopping by credit card now. First of all, online shopping is more than just knowing the card number. First, online banking should go to the counter to sign, and credit cards should also go to the counter to sign. Second, set up some information on the Internet after signing the contract. Important information such as your mobile phone number. Third, some banks also have dynamic passwords, that is, things that change valid passwords every few seconds.
Generally, online shopping is to enter the card number and user name first, and then send the transaction verification code to your mobile phone through the network. Therefore, if the mobile phone and the credit card are not lost together, it is basically safe.
In short, whether it is a credit card or a debit card, your own safety awareness is the first. First of all, the security of the card must be in place, and the transaction password must be set. Some people are afraid of trouble and let the bank cancel the transaction password, which is very dangerous. Personally, I think it's safer to use credit cards now, and I hope I can solve your questions.