Posted Today, 12:36 PM Many sites provide the option of logging in with your Google account.  I've always logged in to sites directly, not with my Google account. I don't understand how this works.  For example, if I login to eBay with my Google account, how does eBay know it's me?  My Google email address, password, and username are not the same as my eBay login info.

https://www.bleepingcomputer.com/forums/t/777611/logging-in-to-numerous-sites-with-google-account/

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