Originally Posted by
Cornish Jack
Thank you, Thirsty - I shall do as you suggest ... didn't realise that was vulnerable

Re the Nexuses (Nexii ?), the tablet has only been switched on, momentarily, to provide the verification contact. - the other two languish,
unused, somewhere.They were purchased, secondhand, to let me join in the 'mobile phone world' ... until I realised that I had absolutely no need for such a thing !

Shockingly, the Nexii will usually only need to be switched on to access your account as they are recorded by Google as trusted devices and
still logged in (says so, right there on the screen, and your screenshot). As The Brigadier has wisely suggested, nuke them logons ASAP.
THEN change your password, yet once again, just to be sure.
To make sure the password change has stuck, attempt to login using your
old password to make sure it is actually
rejected (once only per device so you don't trigger the 'too many attempts' protection), and then use the
correct one,
only on the device you wish to be trusted. When you stop using that device, make sure it is logged out.
Think of it as if you had three keys to the front door of the house. You misplaced two [
languishing somewhere ] and still have one. The other two keys still work, as long as somebody can insert them in the lock. Wouldn't you want to change your lock or get it re-keyed for peace of mind?