1. If you find a great product on your favorite site, search for it in the search engines before you buy it. Make note of the model number or brand, and do a quick search to ensure that you can't get it cheaper from somewhere else. You might be able to save a few dollars like that.
2. If you frequently shop online, make certain your antimalware is always high quality and up-to-date. Major shopping sites are frequently targeted by hackers along with other shady types who make an effort to steal your own personal identification or get into your accounts. Heed any warnings your security software offers you about sites and report suspicious activity to the webmaster of the shopping site.
4. Before you start your online shopping, ensure that you've got up-to-date antivirus software. Internet shopping is a hotbed for suspect websites. Some people build stores with the goal to infect your computer with malware. It's best which you take precautions prior to visiting any stores, no matter how reputable you feel they may be.
5. Ensure that you're entering your payment details on a good site. Look for "https://" inside the URL of the site that you're trying to buy something from. If you don't see that or no indication of any website security, then it's probably a wise idea not to trust those people together with your account information.