What Car did they use?
They used 2014 Jeep Cherokee. They claimed that this hack can be used in thousands of vehicles.
What can this hack do?
Control Brakes, steering wheel, engine, wipers, climate control, and much more.
How did they do this?
Through Uconnect. Uconnect is an internet connected in-car entertainment system. It is used for navigation, enables phone calls, and even offer WIFI hotspot. One vulnerable element allowed these hackers to take control of the car.
Can anyone do this /is it public?
Fortunately, They have not released this exploit to the public.
The hackers contacted Jeep already. Jeep issued a new patch to fix this exploit. Unfortunately, You have to update it manually or go to the dealership.