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.