Hello, I'm new here and to drones.. I just bought an Avata second hand and wondering if I have the full authority in the drone or if the previous owner can still access the drone through his credentials? Any input is highly appreciated.

Thank you

As long as the previous owner unbound the drone before he stole it and youve bound it to your account the previous owner can see nothing of the drone.  

Hi, there. Without the drone, the original owner can not access the aircraft. If you are concerned about the full authority of the drone, you can confirm whether he unbind the account already.