Welcome to a concise exploration of In-Vehicle Networking (IVN), where we trace its evolution over the last twenty years. Initially, we'll discuss the fundamentals of IVNs, highlighting their critical role as the vehicle's nerve center, managing everything from engine performance to entertainment systems.

We then examine the various protocols that underpin IVNs, akin to diverse languages facilitating communication between car components. This section aims to demystify the technicalities, making them accessible and understandable.

However, IVNs come with vulnerabilities. A significant portion of our discussion will address cyber risks, focusing on incidents like "CAN injection," a cyberattack that can compromise vehicle operations. We aim to simplify cybersecurity concepts, providing clear and digestible explanations.

Finally, we'll look at the defenses in place to protect IVNs against cyber threats. This includes an overview of current security mechanisms, explained in an engaging and straightforward manner, suitable for those new to the subject of cybersecurity.