Being paranoid these days, when I saw there was sign-in on my iPad called "Guest" I thought someone inserted themselves into my device to access it. Then I found one on my iMac too. I deleted both of them, though I was told they will be held for thirty days before being fully erased.

Then I wondered if these accounts were there because in the past I have allowed Apple tech support people to work on my devices to solve a problem. So was I too paranoid?