HowToGeek on MSN6mon
What Is SSO, and Is It Really Safe?
For example, if you’re using Gmail, you don’t need to log in separately for Google Drive. Single sign-on (normally written ...
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Why You Shouldn't Sign In With Google or Facebook
Horror stories abound of people being locked out of their Facebook and Gmail accounts, with little recourse to getting back in; if you're using SSO, you'd also lose access to your other accounts.