Driverless cars are the subject of chatter from many people. Tech and car experts agree: It isn’t so much whether driverless cars will happen, but when.

But with more connected cars comes concerns for hacking: Driverless cars need the internet, and the internet is full of bullies and thieves. Those people could take over a car, subjecting it to dangerous behavior. They could also steal the data that helps a car function, or they might even be able to hack into electronically controlled roadway systems.

As these cars approach reality for everyone, you need to arm yourself with knowledge about what they do and what the risks are. This graphic from Vound-Software can help.