You have to protect yourself and your credit card online while shopping. There are a number of ways to do this, but some prove more technical than others.Your basic best defense includes sensible use and layers of protection. The best way to do this is to pick and choose which stores at which you charge purchases. You can reduce the chance of losing your card details to a thief by declining to allow the retailer to store your credit card. Use a password manager to save your passwords and make a different password for each store account.Do not shop in public. If someone can see your screen, the...