Wrong. You WILL be fooled into entering your "good password"
into spoofed login screens, he just showed you how. All it takes is
a laptop and some know-how. The more dependent we are on
wireless technologies, the more insanely insecure we are. If we
went back to hardwired ethernet, in this case say with ports at
the supercharger, it would be much more secure. But then
people would up the ante by tapping the wiring and we're
almost back to square 1. The inescapable flaw is the use of
public or shared networking. The very thing that makes the
digital world go around.
Many years ago, banks and critical infrastructure would only
use dedicated point to point communications. Private networks
and little synchronized devices that generated random passwords
every few seconds. I worked in that environment, it was secure,
and it was very inconvenient. Then the greater convenience of
the public won out, and we let our guard down, way too much.
Insurance covers a lot of losses every day, that's how we deal
with it at the moment. Unauthorized credit card charges, lost
cars, hacked burglar alarms, you name it. Every day.
In Russia, and countries near Russia, they know the danger.
You cannot make a banking transaction without sending back
a one time code that the bank texts to your phone. Password
entry screens never request a full password, only a few characters
picked at random from your long password, so if the line is
monitored, they only get a portion of your password. That's for
openers. The security steps are a nuisance, but it helps in
a world where a lot of people are smart and hungry.
Tesla will introduce some additional security, it will be less
convenient, and it will reduce the chances of losing your car,
to some degree, for a while.
We are trusting people. We have never weighed the complete
vulnerability of a society that puts valuable or important things
under control of shared networks. The convenience is great,
the potential damages are beyond our imagination. Some day
the Big Lesson will be stunning.
But people seem more invested in denial, look at the preview in the 2016 election.