I recently received several Chase mailings showing clearly in a window my present One Pass Mileage Balance (in 7 figures) along with what their proposed offer adds to the balance. Inside the mailing, along with my name and address, is my OP number. I don't know how hard it would be for someone to try crack into my account, but with name, address, OP number, my email address, and knowledge that there's a pot of miles, it would seem to invite someone to try.

Am I being paranoid is is this a potential problem?