Actually paypal is one of the most safest payment processor i have seen. I never heard anyone say he/she has being hacked of paypal. Above all, it's one of the most porpular one too, but one error i see in them is that they don't accept all countries. But i think that's for security purpose, and that's why they have lasted this far online. Am using their site for some months now, and never see or had any problem with it.