1. Learn more about the payment methods provided by the online store you are interested in. Most stores give you the option to pay with credit cards or with PayPal. A credit card is a safe option only when the store has a secure server. If you do not see any details about safety, it is recommended to go through an alternative store.
2. When you are making any purchases on the internet and you are required to make a user account, never use the same passwords that you use on other websites. Do not make use of e-mail or banking password to make an account to buy shoes from a web retailer. If somebody was able to see this password, they could have access to not only your profile on the retailer's store.
3. Be sure that you're entering your payment details on a good site. Look for "https://" in the URL in the site that you're attempting to buy something from. If you don't see that or no sign of any website security, then it's probably a great idea not to trust those people along with your account information.
4. When you are shopping on the web, you should only shop at reputable stores. If the store does not have a strong reputation, you may be seeking trouble. Many people have had their credit card and private information stolen from shopping on less than reputable websites. Be careful and protect your private information.
5. Once you enjoy the convenience of frequent internet shopping, it's essential to keep changing the passwords you use for each account. Every few weeks approximately, make up a whole new password for the bank as well as the shopping sites directly. Use abstract words, combined with numbers and other odd characters for that strongest passwords.