Hi James,
Thanks for reaching out. I apologize if I didn't introduce myself before; my name is Horacio Perez and I am an Account Manager at Ipsos Mystery Shopping in the US.
At Ipsos we don't ask shoppers to provide bank account, only PayPal; and frankly speaking an individual can create as many PayPal and email accounts almost without any limitation. So, believe me, some people is very inventive when it comes to this kind of stuff. And regarding SS#, it is a very sensitive situation and all the data gets encrypted as soon as it is captured, our system identifies duplicates, but again, people are very creative. At the end of the day, we want to make sure that no shops are taken away from honest and honorable people.
As I mentioned before, a follow up email with instructions will be sent to the individual accounts.
Thanks,