​>> As we get through the content on the security, ​there are a number of terms that we're going to see, and ​these terms come up time and again as we go through the content. ​Keep an eye out for where these appear later in the course. ​So the first thing we're going to talk about is the CIA triad. ​Often, you'll see it stacked like a triangle where you have confidentiality, ​integrity, and availability. ​These topics come up time and again throughout cybersecurity. ​In fact, we're going to see this when we dive into looking at how do we calculate ​the impact of a particular vulnerability? ​So in the CIA triad, we have confidentiality.