This sucks. Someone just hijacked my checking account back on April 11th by stealing a check from the mailbox that was being sent to the power company. The had the magnetic ink and the routing number and didn't even have the correct bank or my signature but cashed $7500 worth of counterfeit checks at Wal Marts from here to Springfield, MO. Now I have to worry about my SS# and military record.
Until people decide that the answer "you have no privacy anyhow" isn't good enough, and so they decide that needs to change, it's only gonna keep getting worse.
Sorry that happened to you.
People warn us now to only put out bills and checks in the mail at the post office, and to not ever put them in our mailboxes at home.