Is it safe to log in to a website using Google or Facebook?

- Well, thank you so much for signing up with our service. So we have a few options for you. You can fill out all this paperwork, okay, or you can log in with Google. - When you try to create an account on a new site, sometimes you get the option to log in using Facebook or Google instead. This allows us to avoid creating a new separate account on this new site and just use the existing Facebook login. It seems easy enough, but is it safe to log in to a website using Facebook or Google, and should I? Those are two separate questions that have two different answers. Yes, it's safe to do it. It uses something called OAuth. The new site does not get your Facebook or Google password. At a minimum, Facebook and Google are confirming who you are. - Uh, hey, Google. - Hey, Yash, you're looking great. Have you lost weight? He's good, we go way back. - Oh, great, well, then Yash, you're good to go in. (lighthearted music) - Now, should you do that? It is convenient to only have one login and…