If someone know my credit/debit card number, can you use it online to buy stuff?

Question

Will the site take it? or?

Answer 1

Yes, if they have the expiration date also. Most, but not all, companies now require the security code on the back also. If someone you don't trust knows your card number, call the issuing bank. They will send you a new card with a new number and you won't have to worry about it anymore! :-)

Answer 2

they could if they have the name, exp date and security code in the back of the card.