A USPS Arrow Key is a master key used by postal carriers to open centralized mailbox units in apartment complexes and multi-unit buildings. If one of these keys is stolen or misused, dozens or even hundreds of mailboxes can be opened without visible damage.
That access can expose sensitive documents like replacement debit cards, credit offers, tax forms, or bank statements — all of which can be used to open accounts in your name.
Read the full explanation here:
👉 How It Happens: Mail Interception & Identity Theft
