If you are entering private information into a Web form, you will want to check to be sure your transaction is encrypted. Keep a Record. This will be useful if you need to contact the credit card company or merchant and are asked to provide evidence of your transaction. According to recent surveys, ecommerce sites, with credit card numbers being exchanged, have the highest intrusion rates. How the merchant protects your credit card information on their computers is therefore critical.
Some vendors put that information on their Web site.
If the company you want to do business with does not provide security information and alternatives to online ordering, you may want to shop around.