Source: Geoffrey Fowler, Washington Post ( Paid Registration )

You’ve probably seen it on lots of apps and websites: buttons urging you to sign in with your Google or Facebook account. Sometimes it’s to let you share files, photos or emails. Other times it’s to use Google or Facebook as a quick way to log in somewhere new.   My rule of thumb is to just say no.

Both Google and Facebook have places where you can check what sites and apps you’ve connected to. For Google, log in to your account and then pull up the Google permissions center. It lists all the third party apps with access and places you use Google log-in, and gives you the ability to revoke access.

Read Full Article: She signed in with Google and strangers got access to all her files