[pseingatl]

"the check was fraudulently cashed by an unknown third party."

There's more to this part of the story:

roommate?

Ex?

Family member?

Or your mail gets stolen frequently. You've taken measures to prevent mail theft. Oh, you haven't...

[paypal_woes]

The measures I have taken to prevent mail theft include renting an official USPS PO Box. That is where the check was mailed to.