Many businesses that accept payments with PayPal find it to be secure. They get paid as they expect, and fraud is a little more than a rare annoyance; however, many people have experienced problems with their service. The risk to sellers is the ease with which customers can dispute charges.
Customers can claim that they never received the product or that you did not deliver what you promised. PayPal to assumes that the customer is always right. Customers dispute payments for several reasons: The payment was genuinely fraudulent, a shipment never arrived safely, a customer was dissatisfied with your product. Your PayPal balance is typically not FDIC insured.