The single sign-on trap: How one click snitches on you to 10,000 sites!
By Kim Komando

Kim Komando reveals how clicking Sign in with Google or Sign in with Facebook lets tech giants track every site you visit and everything you do there.

Sign in with Google/Facebook tracks every site you visit and everything you do.
Google and Facebook build complete profiles of your shopping, health searches, dating habits, political views and more.
I’ll tell you how to revoke these permissions.
You know that Sign in with Google or Facebook button? The one you click because who wants to set up another account? Yeah, I get it. One click, you’re in. Super convenient.

But here’s what they don’t want you to know.

The second you click that button, the site gets your name, email and profile photo. Sometimes your phone number and birthday, too. And Google or Facebook? Let me count the ways.

https://www.komando.com/news/social-media/the-single-sign-on-trap-how-one-click-snitch