Of course the command and control uplink is encrypted. Always have been. All military satellite tt&c uplinks are encrypted. (Commercial as well, almost certainly, I just don't have personal knowledge.)
Exactly – otherwise, somebody would have most likely already deorbited them or disrupted them in some other way.
Even amateur satellites are allowed to use encryption for TT&C – a rare exception in (at least US) regulations that otherwise ban all form of encryption.
Even amateur satellites are allowed to use encryption for TT&C – a rare exception in (at least US) regulations that otherwise ban all form of encryption.