The same point stands with the car, any 17 year old could borrow their parents car and drive into a crowd. It's not the fault of the car owner for not securing

The same point stands with the car, any 17 year old could borrow their parents car and drive into a crowd. It's not the fault of the car owner for not securing their car. Security is not preventing people from doing things, it's having some limitations so it's not too easily too quickly (cars are protected by keys, accounts by passwords). Anybody motivated can and will bypass security easily.