If a system doesn't consider the human element in it's design the system as a whole is weak. There is no computer vs human. I am tired of hearing computers doesn't make mistakes and it is only humans that do. Even if they found a bug in kernel or some obscure memory fault, some people will spin it up as human mistake and chalk it up and move on. System designs needs to be holistic and accountable to errors. Everyone thinks they are smart but constant attacks only need you to be careless for a mere moment.
Either the human clicking, or the person who designed the system that allowed them to click.