> see what it does it does whatever the decrypted/signed payload tells the backdoor to execute - it's sent along with the key. The backdoor is just that - a b

> see what it does it does whatever the decrypted/signed payload tells the backdoor to execute - it's sent along with the key. The backdoor is just that - a backdoor to let in that payload (which will have come from the attacker in the future when they're ready to use this backdoor).