title_body: Is it possible to hijack a quadcopter? Is it possible to hijack a quadcopter?
  Like an attacker would jam the controller's signals and send his/her own signal to controll the drone. If so, what would be the technical steps?
upvoted_answer: Is it possible to hijack a quadcopter?
  
  A)Yes
  B)No
  
  If so, what would be the technical steps?
  
  Find a flying drone. Intercept the communication. If encrypted go and get a quantum computer before they switch to quantum encryption.
  I will not detail the step-by-step process to hijack a quadcopter. It's already on the internet. If you didn't find it yet, you didn't ask yourself the right questions.