This afternoon I was logged out of my google account on all my devices. On my laptop I noticed a popup from Google drive and that chrome was not logged in. On my phone a play services popup. I went to log my phone back in any my Google authenticator app no longer shows my account (looks to be in a fresh install state). I used a backup code to get back in. The google security page showed no changes to the "Authenticator app ". There are no "security events" listed and no new "Recently used devices". Anything else I should check? Am I just being paranoid? The coincidence of the authenticator app losing the account synch seemed odd for a coincidence.
I have a related experience. my two way authentication has a registered phone number that I don't recognize at all. The number has a Florida area code, but I have never been to Florida before. I emailed google, asking if my account was hacked, who (ip address) added that number and when did that phone number add to my account. no response :(
Same thing happened to me and some other people:<p><a href="https://twitter.com/search?f=tweets&vertical=default&q=signed%20out%20google&src=typd" rel="nofollow">https://twitter.com/search?f=tweets&vertical=default&q=signe...</a>