I have just used Web Check in for a flight that was already confirmed in I, 7 days out.

When completing the web check in online, the confirmed seat assignment displayed as "4D/Standby". The boarding pass has the seat only printed.

Does the 'standby' indicate that there is some risk that my seat is not really confirmed, or does it relate to my non status travelling companion who is still waiting for an upgrade? I believe that he has already web checked in.