Many websites now allow for the creation of an account to be done via Google using options like “Sign in with Google” or “Join with Google” (I’ve also seen the option to use a Facebook account). Often, this is much easier than going through the steps to enter in my information and create a unique password for the website.
My question is: does this convenience come at a price? Primarily, I am wondering what information is shared between the website and Google. For example, if the website servers are hacked, are my Google log-in credentials also compromised?