Some common scams occur while buying or selling items online. If you are selling an item, the buyer may buy your item and then message you to change the address to ship it to. The scammer is attempting to get the address changed so that they can say they never received their package (at the address listed on their account) and get a refund for the item they “didn’t get”. Protection from this can be from refusing to change addresses, to using shipping trackers.
Selling things with credit or debit cards can also be an issue because of chargebacks. Once the item is shipped, the scammer can chargeback their purchase, and you have no way of stopping the package from delivering at their address. Not much can be done to prevent this, because most banks and PayPal side with the buyer, but shipping trackers and checking user ranks can help you make better decisions.
When buying online, you may buy an item, get a shipping label, and then you receive your box in the mail, only to open it and find nothing, something you didn’t order, or maybe a rock. Avoiding this situation is simple: buying online should only be done when the person you are buying from is trustworthy. If the account that is selling a brand new iPhone XV is a day old and has no reviews you may not want to buy from them. If the seller has multiple negative reviews it may not be wise to buy from them.