In our previous presentation, we learned how did the security in some car ECUs work, and we demonstrated how it could be bypassed to modify their internal parameters, and even to recover a bricked ECU. All of this was done over K-Line, a protocol that was used on all vehicles up to 2010. This time, we will go one step further, introducing the security existing in modern CAN bus enabled vehicles, and of course, how it can be bypassed. We will show a custom made tool that costs less than $20 to build and that is able to access the CAN bus system, giving the possibility of taking control over a CAN enabled vehicle remotely just by hooking four wires.